WO2022064764A1 - Floor-type air conditioner - Google Patents

Floor-type air conditioner Download PDF

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Publication number
WO2022064764A1
WO2022064764A1 PCT/JP2021/018661 JP2021018661W WO2022064764A1 WO 2022064764 A1 WO2022064764 A1 WO 2022064764A1 JP 2021018661 W JP2021018661 W JP 2021018661W WO 2022064764 A1 WO2022064764 A1 WO 2022064764A1
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WO
WIPO (PCT)
Prior art keywords
outlet
floor
air conditioner
indoor
mode
Prior art date
Application number
PCT/JP2021/018661
Other languages
French (fr)
Japanese (ja)
Inventor
晃宏 中野
文香 増田
誠司 岡
Original Assignee
ダイキン工業株式会社
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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
Publication of WO2022064764A1 publication Critical patent/WO2022064764A1/en

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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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • 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
    • 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 a floor-standing air conditioner.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2014-92317
  • a suction port is formed in the center of the front panel of the casing, an upper outlet is formed above the casing, and a lower outlet is formed below the casing.
  • the floor-standing air conditioner having such a configuration, in order to prevent dew condensation around the lower air outlet and the lower air outlet during the cooling operation, the air is blown out from the upper air outlet and the lower air outlet for a certain period of time from the start of the cooling operation. Later, there is one in which the shutter of the lower air outlet is closed so that the air is blown out from the upper air outlet.
  • the floor-standing air conditioner can operate more efficiently when blowing out from both the upper and lower outlets than when closing the lower outlet and blowing out only from the upper outlet. ..
  • the shutter of the lower outlet is closed for a certain period of time regardless of the possibility of dew condensation around the lower outlet and the lower outlet, so that the upper outlet and the lower outlet are closed.
  • the time for highly efficient operation to blow out from both outlets is shortened.
  • This disclosure proposes a floor-standing air conditioner that can suppress dew condensation on the air outlet and around the air outlet.
  • the floor-standing air conditioner of the present disclosure is The first outlet that blows conditioned air toward the floor, A control unit that controls the cooling operation in the first outlet mode in which the conditioned air is blown out from the first outlet, and the cooling operation in the second outlet mode in which the amount of the blown air at the first outlet is lower than that in the first outlet mode. And with The control unit switches from the first blowing mode to the second blowing mode when the first condition including the indoor humidity Ha is satisfied.
  • "reducing the blown air volume at the first outlet” includes stopping the blown air from the first outlet to make the blown air volume zero.
  • the second blowout air volume at the first outlet is lower than that of the first blowout mode in which the conditioned air is blown out from the first outlet.
  • Equipped with a second outlet that blows conditioned air toward the ceiling In the first outlet mode, conditioned air is blown out from the first outlet and the second outlet. In the second outlet mode, the first outlet is closed and the conditioned air is blown out from the second outlet.
  • the first outlet and the second outlet are in the first outlet mode. Efficient cooling can be achieved by blowing out air-conditioned air from the air. Further, in the cooling operation, for example, as the first condition, when the conditions for dew condensation around the first outlet and the first outlet are satisfied, the first outlet is closed in the second outlet mode and the air is blown out only from the second outlet. This makes it possible to suppress dew condensation around the first outlet and the first outlet after efficient cooling in the first outlet mode for as long as possible.
  • the first condition includes the room temperature Ta.
  • the first condition includes the indoor humidity Ha and the indoor temperature Ta
  • the first condition is a state in which the indoor humidity Ha is higher than the determined humidity Hx determined based on the indoor temperature Ta.
  • the indoor humidity Ha is higher than the determined humidity Hx determined based on the indoor temperature Ta, it is determined that the first condition is satisfied, and the conditioned air is blown out from the first outlet.
  • the cooling operation is performed in the second outlet mode in which the amount of blown air at the first outlet is lower than that in the first outlet mode.
  • the first condition is a state in which the blowing temperature is lower than the dew point temperature Td obtained by the indoor humidity Ha and the indoor temperature Ta.
  • the blowing temperature is lower than the dew point temperature obtained by the indoor humidity Ha and the indoor temperature Ta, it is determined that the first condition is satisfied, and the conditioned air is blown out from the first outlet.
  • the cooling operation is performed in the second outlet mode in which the amount of blown air at the first outlet is lower than that in the first outlet mode.
  • the control unit counts the integrated time ct when the first condition is satisfied, and when the integrated time ct exceeds a predetermined time tx1, switches from the first blowing mode to the second blowing mode.
  • the control unit counts the integrated time ct when the first condition is satisfied, and switches from the first blowing mode to the second blowing mode when the integrated time ct exceeds the predetermined time tx1.
  • the room can be efficiently cooled in the first blowing mode for as long as possible.
  • the control unit When the control unit is counting the total time ct, the control unit clears the count of the total time ct when a predetermined clear condition including the stop of operation is satisfied.
  • the integrated time ct is started from zero when the cooling operation is started next time. In the next cooling operation, the operation in the first blowing mode can be lengthened, and the room can be efficiently cooled.
  • FIG. 1 shows a refrigerant circuit RC included in the floor-standing air conditioner according to the first embodiment of the present disclosure.
  • This floor-standing air conditioner is a pair-type air conditioner in which the outdoor unit 1 and the indoor unit 2 are one-to-one.
  • the floor-standing air conditioner includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an electric expansion valve 14, an indoor heat exchanger 15, and an accumulator 16.
  • One end of the four-way switching valve 12 is connected to the discharge side of the compressor 11.
  • One end of the outdoor heat exchanger 13 is connected to the other end of the four-way switching valve 12.
  • One end of the electric expansion valve 14 is connected to the other end of the outdoor heat exchanger 13.
  • One end of the indoor heat exchanger 15 is connected to the other end of the electric expansion valve 14 via the closing valve V1 and the connecting pipe L1.
  • One end of the accumulator 16 is connected to the other end of the indoor heat exchanger 15 via a connecting pipe L2, a closing valve V2, and a four-way switching valve 12, and the suction side of the compressor 11 is connected to the other end of the accumulator 16.
  • the compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, the electric expansion valve 14, the indoor heat exchanger 15, and the accumulator 16 each form a part of the refrigerant circuit RC of the floor-standing air conditioner.
  • the refrigerant circuit RC is filled with R32 refrigerant.
  • the outdoor unit 1 includes an outdoor control device 100 that controls a compressor 11 and an outdoor fan 17.
  • the indoor heat exchanger 15 and the indoor fan 18 are mounted on the indoor unit 2.
  • the indoor fan 18 is a turbofan that sucks in air from the front in the axial direction and blows it out in the radial direction.
  • the indoor unit 2 includes an indoor fan 18, a shutter drive motor M1, a horizontal flap drive motor M2, and the like based on signals from a remote controller 300 (shown in FIG. 6), an indoor temperature sensor 26, an indoor humidity sensor 27, and the like. It is provided with an indoor control device 200 for controlling the temperature (see FIG. 6).
  • the indoor control device 200 is an example of the control unit of the present disclosure.
  • the outdoor control device 100 and the indoor control device 200 perform air conditioning operation by communicating with each other via a communication line (not shown) and operating in cooperation with each other.
  • the four-way switching valve 12 is switched to the solid line switching position during the heating operation to start the compressor 11, while the four-way switching valve 12 is dotted during the cooling operation and the dehumidifying operation.
  • the compressor 11 is started by switching to the switching position of.
  • the direction of the solid arrow indicates the direction in which the R32 refrigerant flows during the heating operation.
  • the direction of the dotted arrow indicates the direction in which the R32 refrigerant flows during the cooling operation and the dehumidifying operation.
  • FIG. 2 shows a view of the indoor unit 2 when the horizontal flap 30 is opened, as viewed from diagonally above.
  • FIG. 3 shows a view of the indoor unit 2 of FIG. 2 as viewed from the front.
  • the indoor unit 2 includes a casing 20 for accommodating an indoor fan 18 (shown in FIG. 1) and the like.
  • the casing 20 includes a bottom frame 21, a front frame 22, and a suction panel 23.
  • the front frame 22 is attached to the front side of the bottom frame 21. Further, the front frame 22 has a substantially rectangular opening (not shown) on the front surface.
  • the top surface of the front frame 22 is provided with an upper outlet 22a that blows conditioned air toward the ceiling in the room.
  • the upper outlet 22a is an example of the second outlet of the present disclosure.
  • a horizontal flap 30 is rotatably attached to the upper part of the front frame 22.
  • the horizontal flap 30 controls the vertical wind direction of the conditioned air blown out from the upper outlet 22a.
  • the fan guard 40 is arranged below the horizontal flap 30 and in the duct portion 25 (shown in FIG. 4).
  • a vertical flap (not shown) for controlling the left-right wind direction of the conditioned air is arranged on the upstream side of the conditioned air with respect to the fan guard 40.
  • the plurality of vertical flaps are arranged in the upper part of the casing 20 at predetermined intervals in the left-right direction.
  • the opening area of the upper outlet 22a is smaller than when the horizontal flap 30 is opened.
  • the closed horizontal flap 30 has a gap between the horizontal flap 30 and the peripheral portion of the upper outlet 22a.
  • a lower outlet 22b that blows conditioned air toward the floor is provided.
  • the lower outlet 22b is an example of the first outlet of the present disclosure. The conditioned air blown out from the lower outlet 22b flows along the floor surface in the room.
  • the suction panel 23 is attached to the front frame 22 so as to cover the opening of the front frame 22 and not to cover the lower air outlet 22b of the front frame 22.
  • the suction panel 23 has a plurality of front suction ports 23a provided at predetermined intervals in the vertical direction. Further, the space between each side portion of the suction panel 23 and the front frame 22 is a horizontal suction port 50 (in FIG. 2, only one space between the right side portion of the suction panel 23 and the front frame 22 is shown).
  • FIG. 4 is a vertical cross-sectional view seen from the IV-IV line of FIG. In FIG. 4, the horizontal flap 30 is in the closed state and the shutter 56 is in the closed state.
  • an indoor heat exchanger 15 and an indoor fan 18 are arranged in the casing 20.
  • the indoor heat exchanger 15 is arranged on the drain pan 51 and has first and second heat exchangers 15a and 15b.
  • the indoor air from the front suction port 23a and the lateral suction port 50 (shown in FIG. 2) passes through the first and second heat exchange portions 15a and 15b, and the temperature and the like are adjusted to become conditioned air.
  • heat insulating materials 52 are arranged on the front side and the lower side of the drain pan 51.
  • the indoor fan 18 is rotationally driven by the motor 53. At this time, the conditioned air from the indoor heat exchanger 15 is sucked into the indoor fan 18 through the space inside the bell mouth 54, and then blown out from the indoor fan 18 to the upper outlet 22a and the lower outlet 22b.
  • the motor 53 is fixed to a substantially central portion of the bottom frame 21 so that the rotation axis of the motor 53 is parallel to the front-rear direction.
  • a heat insulating material 24 is arranged on the rear surface of the bottom frame 21.
  • a shutter 56 is arranged in the blowout passage in the lower part of the casing 20.
  • the shutter 56 receives a driving force of the shutter drive motor M1 (shown in FIG. 6) and rotates about a shaft (not shown) connected to the lower end portion of the shutter 56.
  • the outlet passage is closed by the shutter 56, the conditioned air cannot be blown out from the lower outlet 22b.
  • the shutter 56 is opened to open the blowout passage, and the conditioned air can be blown out from the lower blowout outlet 22b.
  • the horizontal flap 30 rotates under the drive of the horizontal flap drive motor M2 (shown in FIG. 6).
  • the duct portion 25 provided in the upper part of the casing 20 guides the conditioned air blown out from the indoor fan 18 to the upper outlet 22a.
  • the indoor control device 200 selects and performs one of "upper and lower two-way blowing", “upper one-way blowing", and "lower one-way blowing" during air conditioning operation.
  • the horizontal flap 30 and the shutter 56 are opened.
  • the horizontal flap 30 is opened and the shutter 56 is closed.
  • the horizontal flap 30 is closed and the shutter 56 is opened.
  • FIG. 5 is a vertical cross-sectional view seen from the IV-IV line of FIG. 3 when the horizontal flap 30 is in the open state and the shutter 56 is in the open state. As a result, the conditioned air blown out from the indoor fan 18 is blown out from the upper outlet 22a and the lower outlet 22b.
  • FIG. 6 is a block diagram of the indoor control device 200.
  • the indoor control device 200 includes a remote controller 300, an indoor temperature sensor 26, an indoor humidity sensor 27, an indoor fan 18, a shutter drive motor M1, a horizontal flap drive motor M2, and the like. It is connected.
  • FIG. 7 shows a state in which the suction panel 23 of the casing 20 is removed.
  • the operation of the cooling operation of the indoor control device 200 will be described according to the flowchart of FIG.
  • the horizontal flap 30 is in the closed state and the shutter 56 is in the open state.
  • the blowing mode is set to "automatic".
  • step S1 the cooling operation in the first blowing mode is performed in step S1. That is, by driving the indoor fan 18 with the horizontal flap 30 and the shutter 56 open, the lower outlet 22b (first outlet) and the upper outlet 22a (second outlet) are driven, as shown in FIG. ) And blow out conditioned air.
  • step S2 if it is determined that the blowing mode switching condition is satisfied by proceeding to step S2, the process proceeds to step S3, while if it is determined that the blowing mode switching condition is not satisfied, the process returns to step S1 and steps S1 and S2 are repeated.
  • step S3 the cooling operation is performed in the second blowing mode. That is, the lower outlet 22b (first outlet) is closed by closing the shutter 56, and the conditioned air is blown out from the upper outlet 22a (second outlet) as shown in FIG.
  • step S4 the process proceeds to step S4, and if it is determined that the operation is not stopped, the process returns to step S3, steps S3 and S4 are repeated. do.
  • the indoor unit 2 when the cooling operation is started with the outlet mode set to "automatic", the indoor unit 2 has a lower outlet 22b (first outlet) and an upper outlet as shown in FIG. Air-conditioned air is blown out from 22a (second outlet) (first blowout mode). After that, when the blowout mode switching condition (first condition) is satisfied, as shown in FIG. 10, the lower blowout outlet 22b is closed and the conditioned air is blown out from the upper blowout outlet 22a (second blowout mode).
  • the conditioned air is blown out from the lower outlet 22b, and in the cooling operation in the second outlet mode, the amount of the blown air at the lower outlet 22b is lower than that in the first outlet mode. It is set to zero. Further, when the blowing mode switching condition (first condition) is satisfied, the indoor control device 200 switches from the cooling operation in the first blowing mode to the cooling operation in the second blowing mode. As a result, dew condensation around the lower outlet 22b and the lower outlet 22b that blows cold air toward the floor can be suppressed.
  • the blowout mode switching condition (first condition) is to satisfy all of the following 1) to 5). 1) During cooling operation 2) Blow-out mode is "automatic” 3) Shutter 56 is open 4) Capacity is supplied 5) Judgment humidity Hx ⁇ Current indoor humidity Ha
  • FIG. 11 shows an example of the relationship between the room temperature Ta and the determined humidity Hx.
  • the horizontal axis represents the indoor temperature Ta [° C.]
  • the vertical axis represents the indoor humidity Ha [% RH].
  • the straight line represented by the solid line of the black circle ( ⁇ ) indicates the boundary estimated from the evaluation test results conducted by the applicant, and the straight line represented by the dotted line of the black square ( ⁇ ) is the determined humidity according to the room temperature Ta. Shows Hx.
  • the determined humidity Hx of the black square ( ⁇ ) is set to a value about 10% RH lower than the boundary of dew condensation of the black circle ( ⁇ ).
  • the capacity supply is a case where the refrigerant is circulated through the indoor heat exchanger 15 of the indoor unit 2 while the compressor 11 is operating.
  • the capacity supply is a case where the refrigerant is circulated through the indoor heat exchanger 15 of the indoor unit 2 while the compressor 11 is operating.
  • the outlet mode is set to "upper one-sided outlet (fixed)" in which the conditioned air is blown out from the upper outlet 22a (second outlet) in the cooling operation by the remote controller 300, or the upper outlet 22a (second outlet) is set.
  • "Upper one-sided outlet” that blows out conditioned air from the lower outlet 22b (first outlet)
  • “upper and lower two-way outlet” that blows out conditioned air from the lower outlet 22b (first outlet) and upper outlet 22a (second outlet).
  • the blowing mode switching condition (first condition) is from the dew point temperature Td obtained by the indoor humidity Ha (relative humidity) detected by the indoor humidity sensor 27 and the indoor temperature Ta detected by the indoor temperature sensor 26. However, when the blowing temperature is low, it may be determined that the blowing mode switching condition (first condition) is satisfied.
  • the blowing temperature is estimated using the indoor temperature Ta, the temperature of the indoor heat exchanger 15, and the like.
  • the blowing mode switching condition (first condition)
  • the conditioned air is blown out from the lower outlet 22b and the upper outlet 22a in the first blowing mode to increase the air volume more than the blowing from one of them.
  • the outlet mode switching condition (first condition)
  • the lower outlet 22b and the lower outlet 22b are blown out only from the upper outlet 22a by closing the lower outlet 22b in the second outlet mode. Condensation around 22b can be suppressed.
  • the outlet mode switching condition including the indoor humidity Ha and the indoor temperature Ta, whether or not there is a high risk of dew condensation around the lower outlet 22b and the lower outlet 22b is determined by the indoor temperature Ta and the indoor temperature. It can be easily determined by the humidity Ha.
  • the blowing mode switching condition (first condition) is set. It is judged that the condition is satisfied, the blowout from the lower outlet 22b (first outlet) is stopped, and the lower outlet 22b (first) is higher than the first outlet mode in which the conditioned air is blown out from the lower outlet 22b (first outlet).
  • the cooling operation is performed in the second blowout mode in which the blowout air volume at the blowout port) is reduced to zero. In this way, it is possible to easily determine whether or not there is a high risk of dew condensation around the lower air outlet 22b and the lower air outlet 22b based on the room temperature and the room humidity.
  • the shutter 56 is composed of a plurality of shutters, and a part of the plurality of shutters in the open state is closed to partially close the blowout passage on the lower blowout port 22b side to reduce the blowout air volume. You may do so.
  • FIG. 12 is a flowchart illustrating the operation of the cooling operation of the indoor control device 200 of the floor-standing air conditioner according to the second embodiment of the present disclosure.
  • the floor-standing air conditioner of the second embodiment has the same configuration as the floor-standing air conditioner of the first embodiment except for the operation of the cooling operation of the indoor control device 200, and FIGS. 7 is used.
  • step S11 it is determined whether or not the integrated time ct exceeds the predetermined time tx1 (60 min in this embodiment). Then, when the integrated time ct exceeds the predetermined time tx1 (60 min in this embodiment) in step S11, the process proceeds to step S16, while when the integrated time ct is equal to or less than the predetermined time tx1, the process proceeds to step S12.
  • step S12 the cooling operation in the first blowing mode is performed. That is, by driving the indoor fan 18 with the horizontal flap 30 and the shutter 56 open, the lower outlet 22b (first outlet) and the upper outlet 22a (second outlet) are driven, as shown in FIG. ) And blow out conditioned air.
  • step S13 the process proceeds to step S13, and if it is determined that the blowout mode switching condition is satisfied, the process proceeds to step S14, while if it is determined that the blowout mode switching condition is not satisfied, the process returns to step S12, and steps S12 and S13 are repeated.
  • step S14 the integrated time ct is counted in step S14.
  • step S15 the process proceeds to step S15, and when the integrated time ct exceeds the predetermined time tx1 (60 min in this embodiment), the process proceeds to step S16, while when the integrated time ct is the predetermined time tx1 or less, the process returns to step S12.
  • step S16 the cooling operation is performed in the second blowing mode. That is, the lower outlet 22b (first outlet) is closed by closing the shutter 56, and the conditioned air is blown out from the upper outlet 22a (second outlet) as shown in FIG.
  • step S17 the process proceeds to step S17, and if it is determined that the cooling operation is not completed, the process returns to step S16, steps S16 and 17 are repeated, and if it is determined in step S17 that the cooling operation is completed, the process proceeds to step S18 and the cooling operation is completed. End the lever processing.
  • step S21 When this clearing process starts, first, if it is determined in step S21 that the predetermined clearing condition has been continued for a predetermined time tx2 or more, the process proceeds to step S22, the integrated time ct is cleared, and the process ends. Further, if it is determined in step S21 that the clearing condition is not continued for a predetermined time tx2 or more, step S21 is repeated.
  • the floor-standing air conditioner counts the integrated time ct when the blowout mode switching condition (first condition) is satisfied, and when the integrated time ct exceeds the predetermined time tx1, in the first blowout mode.
  • the cooling operation is switched to the cooling operation in the second blowing mode.
  • the room control device 200 clears the count of the integrated time ct when a predetermined clear condition is satisfied.
  • the predetermined clearing condition is that any of the following a) to c) states continue for a predetermined time tx2 (30 min in this embodiment) or more.
  • the blowing mode is not "automatic" during cooling operation b) During operation other than cooling operation c) Operation is stopped (excluding thermo-off)
  • the clearing conditions are not limited to a) to c) above, and other conditions may be appropriately combined.
  • the integrated time ct when the blowing mode switching condition (first condition) is satisfied is counted, and when the integrated time ct exceeds the predetermined time tx1.
  • the integrated time ct is started from zero when the cooling operation is started next time. In the next cooling operation, the operation in the first blowing mode can be lengthened, and the room can be efficiently cooled. During the thermo-off, the counting of the accumulated time ct is interrupted.
  • the floor-standing air conditioner of the second embodiment has the same effect as the floor-standing air conditioner of the first embodiment.
  • the indoor unit 2 having the upper outlet 22a (second outlet) and the lower outlet 22b (first outlet) has been described, but the conditioned air is blown toward the floor.
  • This disclosure may be applied to an indoor unit having one air outlet.
  • the control unit controls the cooling operation in the first outlet mode in which the conditioned air is blown out from the outlet, and the cooling operation in the second outlet mode in which the amount of the blown air at the outlet is lower than that in the first outlet mode.
  • the indoor unit 2 having the indoor temperature sensor 26 for detecting the indoor temperature Ta and the indoor humidity sensor 27 for detecting the indoor humidity Ha has been described.
  • the indoor temperature sensor and the indoor humidity sensor have been described.
  • the present disclosure may be applied to a floor-standing air conditioner that does not have the above and receives a signal indicating indoor temperature and a signal indicating indoor humidity from the outside.

Abstract

This floor-type air conditioner comprises: a first blowout port (22b) that blows air-conditioned air out toward a floor; and a control unit that controls a cooling operation in a first blowout mode in which air-conditioned air is blown out from the first blowout port (22b), and a cooling operation in a second blowout mode in which the amount of air blown out from the first blowout port (22b) is reduced compared to the first blowout mode. The control unit switches from the first blowout mode to the second blowout mode when a first condition, including indoor humidity Ha, is satisfied.

Description

床置き型空気調和機Floor-standing air conditioner
　本開示は、床置き型空気調和機に関する。 This disclosure relates to a floor-standing air conditioner.
　従来、床置き型空気調和機としては、室内熱交換器と室内ファンとが収納されたケーシングを備えたものがある(例えば、特開２０１４－９２３１７号公報(特許文献１)参照)。 Conventionally, as a floor-standing air conditioner, there is one provided with a casing in which an indoor heat exchanger and an indoor fan are housed (see, for example, Japanese Patent Application Laid-Open No. 2014-92317 (Patent Document 1)).
　上記床置き型空気調和機は、ケーシングの前面パネルの中央部に吸込口が形成されていると共に、ケーシングの上方に上吹出口が形成され、ケーシングの下方に下吹出口が形成されている。 In the floor-standing air conditioner, a suction port is formed in the center of the front panel of the casing, an upper outlet is formed above the casing, and a lower outlet is formed below the casing.
特開２０１４－９２３１７号公報Japanese Unexamined Patent Publication No. 2014-92317
　このような構成の床置き型空気調和機において、冷房運転時に下吹出口および下吹出口周辺の結露を防止するため、冷房運転の開始から一定時間だけ上吹出口と下吹出口から吹き出す運転した後、下吹出口のシャッタを閉じて上吹出口から吹き出すようにしたものがある。上記床置き型空気調和機は、上吹出口と下吹出口の両方から吹き出すときに、下吹出口を閉じて上吹出口のみから吹き出すときよりも風量を多くできるので、高効率な運転ができる。 In the floor-standing air conditioner having such a configuration, in order to prevent dew condensation around the lower air outlet and the lower air outlet during the cooling operation, the air is blown out from the upper air outlet and the lower air outlet for a certain period of time from the start of the cooling operation. Later, there is one in which the shutter of the lower air outlet is closed so that the air is blown out from the upper air outlet. The floor-standing air conditioner can operate more efficiently when blowing out from both the upper and lower outlets than when closing the lower outlet and blowing out only from the upper outlet. ..
　しかしながら、上記床置き型空気調和機では、下吹出口および下吹出口周辺の結露の可能性があるかないかに関わらず、一定時間で下吹出口のシャッタを閉じているため、上吹出口と下吹出口の両方から吹き出す高効率な運転の時間が短くなる。 However, in the above-mentioned floor-standing air conditioner, the shutter of the lower outlet is closed for a certain period of time regardless of the possibility of dew condensation around the lower outlet and the lower outlet, so that the upper outlet and the lower outlet are closed. The time for highly efficient operation to blow out from both outlets is shortened.
　このように、上記床置き型空気調和機では、冷房運転の開始時に上吹出口と下吹出口の両方から吹き出す高効率な運転をできるだけ長くできるようにしつつ、下吹出口および下吹出口周辺の結露を抑制するということができない。 In this way, in the above-mentioned floor-standing air conditioner, the high-efficiency operation of blowing out from both the upper outlet and the lower outlet at the start of the cooling operation can be made as long as possible, and the area around the lower outlet and the lower outlet. It cannot be said that condensation is suppressed.
　本開示では、吹出口および吹出口周辺の結露を抑制できる床置き型空気調和機を提案する。 This disclosure proposes a floor-standing air conditioner that can suppress dew condensation on the air outlet and around the air outlet.
　本開示の床置き型空気調和機は、
　床に向かって空調空気を吹き出す第１吹出口と、
　上記第１吹出口から空調空気を吹き出す第１吹出モードでの冷房運転、および上記第１吹出モードよりも上記第１吹出口における吹き出し風量を下げる第２吹出モードでの冷房運転を制御する制御部と
を備え、
　上記制御部は、室内湿度Ｈａを含む第１条件を満たすときに、上記第１吹出モードから上記第２吹出モードに切り換える。
　ここで、「第１吹出口における吹き出し風量を下げる」とは、第１吹出口からの吹き出しを止めて吹き出し風量をゼロにすることも含まれる。 The floor-standing air conditioner of the present disclosure is
The first outlet that blows conditioned air toward the floor,
A control unit that controls the cooling operation in the first outlet mode in which the conditioned air is blown out from the first outlet, and the cooling operation in the second outlet mode in which the amount of the blown air at the first outlet is lower than that in the first outlet mode. And with
The control unit switches from the first blowing mode to the second blowing mode when the first condition including the indoor humidity Ha is satisfied.
Here, "reducing the blown air volume at the first outlet" includes stopping the blown air from the first outlet to make the blown air volume zero.
　本開示によれば、冷房運転において、室内湿度Ｈａを含む第１条件を満たすときに、第１吹出口から空調空気を吹き出す第１吹出モードよりも第１吹出口における吹き出し風量を下げる第２吹出モードでの冷房運転を行うことによって、床に向かって冷気を吹き出す第１吹出口および第１吹出口周辺の結露を抑制できる。 According to the present disclosure, in the cooling operation, when the first condition including the indoor humidity Ha is satisfied, the second blowout air volume at the first outlet is lower than that of the first blowout mode in which the conditioned air is blown out from the first outlet. By performing the cooling operation in the mode, it is possible to suppress dew condensation around the first outlet and the first outlet that blows cold air toward the floor.
　また、本開示の１つの態様に係る床置き型空気調和機では、
　天井に向かって空調空気を吹き出す第２吹出口を備え、
　上記第１吹出モードにおいて、上記第１吹出口と上記第２吹出口とから空調空気を吹き出し、
　上記第２吹出モードにおいて、上記第１吹出口を閉じて上記第２吹出口から空調空気を吹き出す。 Further, in the floor-standing air conditioner according to one aspect of the present disclosure,
Equipped with a second outlet that blows conditioned air toward the ceiling
In the first outlet mode, conditioned air is blown out from the first outlet and the second outlet.
In the second outlet mode, the first outlet is closed and the conditioned air is blown out from the second outlet.
　本開示によれば、冷房運転において、例えば第１条件として、第１吹出口および第１吹出口周辺が結露する条件を満たさないときは、第１吹出モードで第１吹出口と第２吹出口とから空調空気を吹き出すことにより効率よい冷房ができる。また、冷房運転において、例えば第１条件として、第１吹出口および第１吹出口周辺が結露する条件を満たすときは、第２吹出モードで第１吹出口を閉じて第２吹出口のみから吹き出すことにより、できるだけ長く第１吹出モードで効率よい冷房を行った後、第１吹出口および第１吹出口周辺の結露を抑制できる。 According to the present disclosure, in the cooling operation, for example, as the first condition, when the condition that the first outlet and the vicinity of the first outlet do not condense is not satisfied, the first outlet and the second outlet are in the first outlet mode. Efficient cooling can be achieved by blowing out air-conditioned air from the air. Further, in the cooling operation, for example, as the first condition, when the conditions for dew condensation around the first outlet and the first outlet are satisfied, the first outlet is closed in the second outlet mode and the air is blown out only from the second outlet. This makes it possible to suppress dew condensation around the first outlet and the first outlet after efficient cooling in the first outlet mode for as long as possible.
　また、本開示の１つの態様に係る床置き型空気調和機では、
　上記第１条件は室内温度Ｔａを含む。 Further, in the floor-standing air conditioner according to one aspect of the present disclosure,
The first condition includes the room temperature Ta.
　本開示によれば、第１条件が室内湿度Ｈａと室内温度Ｔａとを含むことにより、第１吹出口および第１吹出口周辺が結露するか否かを、室内温度Ｔａや室内湿度Ｈａで容易に判定することができる。 According to the present disclosure, when the first condition includes the indoor humidity Ha and the indoor temperature Ta, it is easy to determine whether or not the first outlet and the vicinity of the first outlet are dewed by the indoor temperature Ta or the indoor humidity Ha. Can be determined.
　また、本開示の１つの態様に係る床置き型空気調和機では、
　上記第１条件は、上記室内温度Ｔａに基づいて決定された判定湿度Ｈｘよりも上記室内湿度Ｈａが高い状態である。 Further, in the floor-standing air conditioner according to one aspect of the present disclosure,
The first condition is a state in which the indoor humidity Ha is higher than the determined humidity Hx determined based on the indoor temperature Ta.
　本開示によれば、室内温度Ｔａに基づいて決定された判定湿度Ｈｘよりも室内湿度Ｈａが高い状態であるとき、第１条件を満たすと判断して、第１吹出口から空調空気を吹き出す第１吹出モードよりも第１吹出口における吹き出し風量を下げる第２吹出モードでの冷房運転を行う。これにより、第１吹出口および第１吹出口周辺の結露を抑制できる。 According to the present disclosure, when the indoor humidity Ha is higher than the determined humidity Hx determined based on the indoor temperature Ta, it is determined that the first condition is satisfied, and the conditioned air is blown out from the first outlet. The cooling operation is performed in the second outlet mode in which the amount of blown air at the first outlet is lower than that in the first outlet mode. As a result, dew condensation around the first outlet and the first outlet can be suppressed.
　また、本開示の１つの態様に係る床置き型空気調和機では、
　上記第１条件は、上記室内湿度Ｈａと上記室内温度Ｔａとにより得られた露点温度Ｔｄよりも吹出温度が低い状態である。 Further, in the floor-standing air conditioner according to one aspect of the present disclosure,
The first condition is a state in which the blowing temperature is lower than the dew point temperature Td obtained by the indoor humidity Ha and the indoor temperature Ta.
　本開示によれば、室内湿度Ｈａと室内温度Ｔａとにより得られた露点温度よりも吹出温度が低い状態であるとき、第１条件を満たすと判断して、第１吹出口から空調空気を吹き出す第１吹出モードよりも第１吹出口における吹き出し風量を下げる第２吹出モードでの冷房運転を行う。これにより、第１吹出口および第１吹出口周辺の結露を抑制できる。 According to the present disclosure, when the blowing temperature is lower than the dew point temperature obtained by the indoor humidity Ha and the indoor temperature Ta, it is determined that the first condition is satisfied, and the conditioned air is blown out from the first outlet. The cooling operation is performed in the second outlet mode in which the amount of blown air at the first outlet is lower than that in the first outlet mode. As a result, dew condensation around the first outlet and the first outlet can be suppressed.
　また、本開示の１つの態様に係る床置き型空気調和機では、
　上記制御部は、上記第１条件を満たしているときの積算時間ｔｃをカウントし、その積算時間ｔｃが所定時間ｔｘ１を越えたとき、上記第１吹出モードから上記第２吹出モードに切り換える。 Further, in the floor-standing air conditioner according to one aspect of the present disclosure,
The control unit counts the integrated time ct when the first condition is satisfied, and when the integrated time ct exceeds a predetermined time tx1, switches from the first blowing mode to the second blowing mode.
　本開示によれば、制御部は、第１条件を満たしているときの積算時間ｔｃをカウントし、その積算時間ｔｃが所定時間ｔｘ１を越えたとき、第１吹出モードから第２吹出モードに切り換えることにより、できるだけ長く第１吹出モードで室内を効率よく冷房できる。 According to the present disclosure, the control unit counts the integrated time ct when the first condition is satisfied, and switches from the first blowing mode to the second blowing mode when the integrated time ct exceeds the predetermined time tx1. As a result, the room can be efficiently cooled in the first blowing mode for as long as possible.
　また、本開示の１つの態様に係る床置き型空気調和機では、
　上記制御部は、上記積算時間ｔｃをカウントしているとき、運転停止を含む所定のクリア条件を満たすと上記積算時間ｔｃのカウントをクリアする。 Further, in the floor-standing air conditioner according to one aspect of the present disclosure,
When the control unit is counting the total time ct, the control unit clears the count of the total time ct when a predetermined clear condition including the stop of operation is satisfied.
　本開示によれば、運転停止を含む所定のクリア条件を満たしたときに上記積算時間ｔｃのカウントをクリアすることにより、次に冷房運転を開始したときに積算時間ｔｃをゼロからスタートさせることで、次の冷房運転においても第１吹出モードでの運転を長くでき、室内を効率よく冷房できる。 According to the present disclosure, by clearing the count of the integrated time ct when a predetermined clearing condition including the operation stop is satisfied, the integrated time ct is started from zero when the cooling operation is started next time. In the next cooling operation, the operation in the first blowing mode can be lengthened, and the room can be efficiently cooled.
本開示の第１実施形態の床置き型空気調和機が備える冷媒回路である。It is a refrigerant circuit provided in the floor-standing type air conditioner of the first embodiment of the present disclosure. 第１実施形態の床置き型空気調和機の室内機を斜め上方から見た図である。It is the figure which looked at the indoor unit of the floor-standing type air conditioner of 1st Embodiment from diagonally above. 第１実施形態の床置き型空気調和機の室内機を前方から見た図である。It is the figure which looked at the indoor unit of the floor-standing type air conditioner of 1st Embodiment from the front. 図３のIV－IV線から見た縦断面図である。It is a vertical sectional view seen from the IV-IV line of FIG. 図３のIV－IV線から見た縦断面図である。It is a vertical sectional view seen from the IV-IV line of FIG. 第１実施形態の床置き型空気調和機の室内制御装置のブロック図である。It is a block diagram of the room control device of the floor-standing type air conditioner of 1st Embodiment. 第１実施形態の室内機の室内温度センサの位置と室内湿度センサの位置とを示す図である。It is a figure which shows the position of the room temperature sensor and the position of the room humidity sensor of the indoor unit of 1st Embodiment. 第１実施形態の室内制御装置の冷房運転の動作を説明するフローチャートである。It is a flowchart explaining the operation of the cooling operation of the room control device of 1st Embodiment. 第１実施形態の室内機の上下吹出モードの運転を示す図である。It is a figure which shows the operation of the vertical blow-out mode of the indoor unit of 1st Embodiment. 第１実施形態の室内機の上吹出モードの運転を示す図である。It is a figure which shows the operation of the upper blowing mode of the indoor unit of 1st Embodiment. 室内温度と判定湿度との関係の一例を示す図である。It is a figure which shows an example of the relationship between a room temperature and a determination humidity. 本開示の第２実施形態の床置き型空気調和機の室内制御装置の冷房運転の動作を説明するフローチャートである。It is a flowchart explaining the operation of the cooling operation of the room control device of the floor-standing type air conditioner of the 2nd Embodiment of this disclosure. 第２実施形態の室内制御装置の積算時間のクリア処理を説明するフローチャートである。It is a flowchart explaining the clear process of the integration time of the room control device of 2nd Embodiment.
　以下、実施形態を説明する。なお、図面において、同一の参照番号は、同一部分または相当部分を表わすものである。また、長さ、幅、厚さ、深さ等の図面上の寸法は、図面の明瞭化と簡略化のために実際の尺度から適宜変更されており、実際の相対寸法を表してはいない。 Hereinafter, embodiments will be described. In the drawings, the same reference number represents the same part or the corresponding part. In addition, the dimensions on the drawing such as length, width, thickness, and depth are appropriately changed from the actual scale for the purpose of clarifying and simplifying the drawing, and do not represent the actual relative dimensions.
　〔第１実施形態〕
　図１は、本開示の第１実施形態の床置き型空気調和機が備える冷媒回路ＲＣを示す。この床置き型空気調和機は、室外機１と室内機２とが一対一のペア型の空気調和機である。 [First Embodiment]
FIG. 1 shows a refrigerant circuit RC included in the floor-standing air conditioner according to the first embodiment of the present disclosure. This floor-standing air conditioner is a pair-type air conditioner in which the outdoor unit 1 and the indoor unit 2 are one-to-one.
　上記床置き型空気調和機は、圧縮機１１と、四路切換弁１２と、室外熱交換器１３と、電動膨張弁１４と、室内熱交換器１５と、アキュムレータ１６とを備えている。圧縮機１１の吐出側に四路切換弁１２の一端が接続されている。四路切換弁１２の他端に室外熱交換器１３の一端が接続されている。室外熱交換器１３の他端に電動膨張弁１４の一端が接続されている。電動膨張弁１４の他端に閉鎖弁Ｖ１,連絡配管Ｌ１を介して室内熱交換器１５の一端が接続されている。室内熱交換器１５の他端に連絡配管Ｌ２,閉鎖弁Ｖ２および四路切換弁１２を介してアキュムレータ１６の一端が接続され、アキュムレータ１６の他端に圧縮機１１の吸入側が接続されている。 The floor-standing air conditioner includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an electric expansion valve 14, an indoor heat exchanger 15, and an accumulator 16. One end of the four-way switching valve 12 is connected to the discharge side of the compressor 11. One end of the outdoor heat exchanger 13 is connected to the other end of the four-way switching valve 12. One end of the electric expansion valve 14 is connected to the other end of the outdoor heat exchanger 13. One end of the indoor heat exchanger 15 is connected to the other end of the electric expansion valve 14 via the closing valve V1 and the connecting pipe L1. One end of the accumulator 16 is connected to the other end of the indoor heat exchanger 15 via a connecting pipe L2, a closing valve V2, and a four-way switching valve 12, and the suction side of the compressor 11 is connected to the other end of the accumulator 16.
　圧縮機１１,四路切換弁１２,室外熱交換器１３,電動膨張弁１４,室内熱交換器１５およびアキュムレータ１６は、それぞれ、床置き型空気調和機の冷媒回路ＲＣの一部を構成する。この冷媒回路ＲＣには、Ｒ３２冷媒が充填されている。 The compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, the electric expansion valve 14, the indoor heat exchanger 15, and the accumulator 16 each form a part of the refrigerant circuit RC of the floor-standing air conditioner. The refrigerant circuit RC is filled with R32 refrigerant.
　また、圧縮機１１,四路切換弁１２,室外熱交換器１３,電動膨張弁１４,アキュムレータ１６および室外ファン１７は、室外機１に搭載されている。この室外機１は、圧縮機１１や室外ファン１７を制御する室外制御装置１００を備えている。 Further, the compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, the electric expansion valve 14, the accumulator 16, and the outdoor fan 17 are mounted on the outdoor unit 1. The outdoor unit 1 includes an outdoor control device 100 that controls a compressor 11 and an outdoor fan 17.
　また、室内熱交換器１５および室内ファン１８は、室内機２に搭載されている。室内ファン１８は、軸方向前方から空気を吸い込んで半径方向外向に吹き出すターボファンである。この室内機２は、リモートコントローラ３００(図６に示す),室内温度センサ２６,室内湿度センサ２７などからの信号に基づいて、室内ファン１８,シャッタ用駆動モータＭ１,水平フラップ用駆動モータＭ２などを制御する室内制御装置２００を備えている(図６参照)。室内制御装置２００は、本開示の制御部の一例である。 Further, the indoor heat exchanger 15 and the indoor fan 18 are mounted on the indoor unit 2. The indoor fan 18 is a turbofan that sucks in air from the front in the axial direction and blows it out in the radial direction. The indoor unit 2 includes an indoor fan 18, a shutter drive motor M1, a horizontal flap drive motor M2, and the like based on signals from a remote controller 300 (shown in FIG. 6), an indoor temperature sensor 26, an indoor humidity sensor 27, and the like. It is provided with an indoor control device 200 for controlling the temperature (see FIG. 6). The indoor control device 200 is an example of the control unit of the present disclosure.
　室外制御装置１００と室内制御装置２００とは、通信線(図示せず)を介して互いに通信を行って協調動作することにより、空調運転を行う。 The outdoor control device 100 and the indoor control device 200 perform air conditioning operation by communicating with each other via a communication line (not shown) and operating in cooperation with each other.
　上記床置き型空気調和機は、暖房運転時、四路切換弁１２を実線の切換え位置に切り換えて、圧縮機１１を起動する一方、冷房運転時および除湿運転時、四路切換弁１２を点線の切換え位置に切り換えて、圧縮機１１を起動する。なお、実線の矢印の方向は、暖房運転時にＲ３２冷媒が流れる方向を示す。また、点線の矢印の方向は、冷房運転時および除湿運転時にＲ３２冷媒が流れる方向を示す。 In the floor-standing air conditioner, the four-way switching valve 12 is switched to the solid line switching position during the heating operation to start the compressor 11, while the four-way switching valve 12 is dotted during the cooling operation and the dehumidifying operation. The compressor 11 is started by switching to the switching position of. The direction of the solid arrow indicates the direction in which the R32 refrigerant flows during the heating operation. Further, the direction of the dotted arrow indicates the direction in which the R32 refrigerant flows during the cooling operation and the dehumidifying operation.
　図２は、水平フラップ３０を開放状態にしたときの室内機２を斜め上方から見た図を示す。また、図３は、図２の室内機２を前方から見た図を示す。 FIG. 2 shows a view of the indoor unit 2 when the horizontal flap 30 is opened, as viewed from diagonally above. Further, FIG. 3 shows a view of the indoor unit 2 of FIG. 2 as viewed from the front.
　室内機２は、図２,図３に示すように、室内ファン１８(図１に示す)などを収容するケーシング２０を備える。このケーシング２０は、底フレーム２１、前フレーム２２および吸込パネル２３を備える。 As shown in FIGS. 2 and 3, the indoor unit 2 includes a casing 20 for accommodating an indoor fan 18 (shown in FIG. 1) and the like. The casing 20 includes a bottom frame 21, a front frame 22, and a suction panel 23.
　前フレーム２２は、底フレーム２１の前側に取り付けられている。また、前フレーム２２は、前面に略長方形状の開口部(図示せず)を有する。前フレーム２２の天面には、室内の天井に向けて空調空気を吹き出す上吹出口２２ａが設けられている。この上吹出口２２ａは、本開示の第２吹出口の一例である。 The front frame 22 is attached to the front side of the bottom frame 21. Further, the front frame 22 has a substantially rectangular opening (not shown) on the front surface. The top surface of the front frame 22 is provided with an upper outlet 22a that blows conditioned air toward the ceiling in the room. The upper outlet 22a is an example of the second outlet of the present disclosure.
　前フレーム２２の上部には、水平フラップ３０が回動可能に取り付けられている。この水平フラップ３０は、上吹出口２２ａから吹き出される調和空気の上下方向の風向を制御する。 A horizontal flap 30 is rotatably attached to the upper part of the front frame 22. The horizontal flap 30 controls the vertical wind direction of the conditioned air blown out from the upper outlet 22a.
　また、水平フラップ３０の下側かつダクト部２５(図４に示す)内に、ファンガード４０が配置されている。ファンガード４０よりも調和空気の上流側には、調和空気の左右方向の風向を制御する垂直フラップ(図示せず)が配置されている。この複数の垂直フラップは、ケーシング２０の上部内において左右方向に所定間隔を空けて配列されている。 Further, the fan guard 40 is arranged below the horizontal flap 30 and in the duct portion 25 (shown in FIG. 4). A vertical flap (not shown) for controlling the left-right wind direction of the conditioned air is arranged on the upstream side of the conditioned air with respect to the fan guard 40. The plurality of vertical flaps are arranged in the upper part of the casing 20 at predetermined intervals in the left-right direction.
　水平フラップ３０を閉鎖状態にすると、水平フラップ３０を開放状態にしたときと比べて、上吹出口２２ａの開口面積が小さくなる。この閉鎖状態の水平フラップ３０は、上吹出口２２ａの周縁部との間に隙間を有する。 When the horizontal flap 30 is closed, the opening area of the upper outlet 22a is smaller than when the horizontal flap 30 is opened. The closed horizontal flap 30 has a gap between the horizontal flap 30 and the peripheral portion of the upper outlet 22a.
　また、前フレーム２２の下部の前面には、床に向かって空調空気を吹き出す下吹出口２２ｂが設けられている。この下吹出口２２ｂは、本開示の第１吹出口の一例である。この下吹出口２２ｂから吹き出された調和空気は、室内の床面に沿って流れる。 Further, on the front surface of the lower part of the front frame 22, a lower outlet 22b that blows conditioned air toward the floor is provided. The lower outlet 22b is an example of the first outlet of the present disclosure. The conditioned air blown out from the lower outlet 22b flows along the floor surface in the room.
　吸込パネル２３は、前フレーム２２の上記開口部を覆うように、かつ、前フレーム２２の下吹出口２２ｂを覆わないように、前フレーム２２に取り付けられている。この吸込パネル２３は、上下方向に所定間隔を空けて設けられた複数の前吸込口２３ａを有する。また、吸込パネル２３の各側部と前フレーム２２との間の空間が横吸込口５０(図２では吸込パネル２３の右側部と前フレーム２２との間の１つのみ図示)となる。室内ファン１８が駆動すると、室内空気が前吸込口２３ａおよび横吸込口５０を介してケーシング２０内に吸い込まれる。 The suction panel 23 is attached to the front frame 22 so as to cover the opening of the front frame 22 and not to cover the lower air outlet 22b of the front frame 22. The suction panel 23 has a plurality of front suction ports 23a provided at predetermined intervals in the vertical direction. Further, the space between each side portion of the suction panel 23 and the front frame 22 is a horizontal suction port 50 (in FIG. 2, only one space between the right side portion of the suction panel 23 and the front frame 22 is shown). When the indoor fan 18 is driven, the indoor air is sucked into the casing 20 through the front suction port 23a and the lateral suction port 50.
　図４は、図３のIV－IV線から見た縦断面図である。図４では、水平フラップ３０を閉鎖状態にし、シャッタ５６を閉鎖状態にしている。 FIG. 4 is a vertical cross-sectional view seen from the IV-IV line of FIG. In FIG. 4, the horizontal flap 30 is in the closed state and the shutter 56 is in the closed state.
　図４に示すように、ケーシング２０内には、室内熱交換器１５および室内ファン１８が配置されている。 As shown in FIG. 4, an indoor heat exchanger 15 and an indoor fan 18 are arranged in the casing 20.
　室内熱交換器１５は、ドレンパン５１上に配置され、第１,第２熱交換部１５ａ,１５ｂを有する。前吸込口２３ａおよび横吸込口５０(図２に示す)からの室内空気は、第１,第２熱交換部１５ａ,１５ｂを通過することで、温度などが調整されて調和空気となる。また、ドレンパン５１の前側および下側には、断熱材５２が配置されている。 The indoor heat exchanger 15 is arranged on the drain pan 51 and has first and second heat exchangers 15a and 15b. The indoor air from the front suction port 23a and the lateral suction port 50 (shown in FIG. 2) passes through the first and second heat exchange portions 15a and 15b, and the temperature and the like are adjusted to become conditioned air. Further, heat insulating materials 52 are arranged on the front side and the lower side of the drain pan 51.
　室内ファン１８は、モータ５３によって回転駆動される。このとき、室内熱交換器１５からの調和空気は、ベルマウス５４内の空間を介して室内ファン１８に吸い込まれた後、室内ファン１８から上吹出口２２ａおよび下吹出口２２ｂへ吹き出される。 The indoor fan 18 is rotationally driven by the motor 53. At this time, the conditioned air from the indoor heat exchanger 15 is sucked into the indoor fan 18 through the space inside the bell mouth 54, and then blown out from the indoor fan 18 to the upper outlet 22a and the lower outlet 22b.
　モータ５３は、モータ５３の回転軸が前後方向と平行となるように、底フレーム２１の略中央部に固定されている。この底フレーム２１の後面には断熱材２４が配置されている。 The motor 53 is fixed to a substantially central portion of the bottom frame 21 so that the rotation axis of the motor 53 is parallel to the front-rear direction. A heat insulating material 24 is arranged on the rear surface of the bottom frame 21.
　ケーシング２０の下部内の吹出通路には、シャッタ５６が配置されている。このシャッタ５６は、シャッタ用駆動モータＭ１(図６に示す)の駆動力を受けて、シャッタ５６の下端部に連結された軸(図示せず)を中心に回動する。シャッタ５６により吹出通路が閉鎖されると、下吹出口２２ｂから調和空気を吹き出せない。このとき、シャッタ５６が開いて吹出通路が開放され、下吹出口２２ｂから調和空気を吹き出せるようになる。 A shutter 56 is arranged in the blowout passage in the lower part of the casing 20. The shutter 56 receives a driving force of the shutter drive motor M1 (shown in FIG. 6) and rotates about a shaft (not shown) connected to the lower end portion of the shutter 56. When the outlet passage is closed by the shutter 56, the conditioned air cannot be blown out from the lower outlet 22b. At this time, the shutter 56 is opened to open the blowout passage, and the conditioned air can be blown out from the lower blowout outlet 22b.
　水平フラップ３０は、水平フラップ用駆動モータＭ２(図６に示す)の駆動を受けて回動する。 The horizontal flap 30 rotates under the drive of the horizontal flap drive motor M2 (shown in FIG. 6).
　ケーシング２０の上部に設けられたダクト部２５は、室内ファン１８から吹き出された調和空気を上吹出口２２ａに案内する。 The duct portion 25 provided in the upper part of the casing 20 guides the conditioned air blown out from the indoor fan 18 to the upper outlet 22a.
　室内制御装置２００は、空調運転時、「上下二方吹出」、「上一方吹出」、「下一方吹出」のうちのいずれか１つを選択して行う。「上下二方吹出」の制御では、水平フラップ３０とシャッタ５６とを開放状態にする。「上一方吹出」の制御では、水平フラップ３０を開放状態にし、シャッタ５６を閉鎖状態にする。「下一方吹出」の制御では、水平フラップ３０を閉鎖状態にし、シャッタ５６を開放状態にする。 The indoor control device 200 selects and performs one of "upper and lower two-way blowing", "upper one-way blowing", and "lower one-way blowing" during air conditioning operation. In the control of "upper and lower two-way blowing", the horizontal flap 30 and the shutter 56 are opened. In the control of "upper one-sided blowout", the horizontal flap 30 is opened and the shutter 56 is closed. In the control of "lower one-sided blowout", the horizontal flap 30 is closed and the shutter 56 is opened.
　図５は、水平フラップ３０を開放状態にし、シャッタ５６を開放状態にしたときの図３のIV－IV線から見た縦断面図である。これにより、室内ファン１８から吹き出された調和空気は、上吹出口２２ａと下吹出口２２ｂとから吹き出す。 FIG. 5 is a vertical cross-sectional view seen from the IV-IV line of FIG. 3 when the horizontal flap 30 is in the open state and the shutter 56 is in the open state. As a result, the conditioned air blown out from the indoor fan 18 is blown out from the upper outlet 22a and the lower outlet 22b.
　図６は、室内制御装置２００のブロック図である。室内制御装置２００は、図６に示すように、リモートコントローラ３００と、室内温度センサ２６と、室内湿度センサ２７と、室内ファン１８と、シャッタ用駆動モータＭ１と、水平フラップ用駆動モータＭ２などが接続されている。 FIG. 6 is a block diagram of the indoor control device 200. As shown in FIG. 6, the indoor control device 200 includes a remote controller 300, an indoor temperature sensor 26, an indoor humidity sensor 27, an indoor fan 18, a shutter drive motor M1, a horizontal flap drive motor M2, and the like. It is connected.
　室内温度センサ２６と室内湿度センサ２７とは、図７に示す点線で囲まれた領域Ｓに配置されている。図７では、ケーシング２０の吸込パネル２３を外した状態を示している。 The indoor temperature sensor 26 and the indoor humidity sensor 27 are arranged in the area S surrounded by the dotted line shown in FIG. 7. FIG. 7 shows a state in which the suction panel 23 of the casing 20 is removed.
　次に、室内制御装置２００の冷房運転の動作を図８のフローチャートに従って説明する。なお、冷房運転の開始前(停止状態)は、水平フラップ３０が閉鎖状態でシャッタ５６が開放状態のである。この冷房運転では、吹出モードが「自動」に設定されている。 Next, the operation of the cooling operation of the indoor control device 200 will be described according to the flowchart of FIG. Before the start of the cooling operation (stopped state), the horizontal flap 30 is in the closed state and the shutter 56 is in the open state. In this cooling operation, the blowing mode is set to "automatic".
　冷房運転を開始すると、まず、ステップＳ１で第１吹出モードでの冷房運転を行う。すなわち、水平フラップ３０とシャッタ５６とを開放状態にして室内ファン１８を駆動することにより、図９に示すように、下吹出口２２ｂ(第１吹出口)と上吹出口２２ａ(第２吹出口)とから空調空気を吹き出す。 When the cooling operation is started, first, the cooling operation in the first blowing mode is performed in step S1. That is, by driving the indoor fan 18 with the horizontal flap 30 and the shutter 56 open, the lower outlet 22b (first outlet) and the upper outlet 22a (second outlet) are driven, as shown in FIG. ) And blow out conditioned air.
　次に、ステップＳ２に進み、吹出モード切換条件を満たすと判断すると、ステップＳ３に進む一方、吹出モード切換条件を満たさないと判断すると、ステップＳ１に戻り、ステップＳ１,Ｓ２を繰り返す。 Next, if it is determined that the blowing mode switching condition is satisfied by proceeding to step S2, the process proceeds to step S3, while if it is determined that the blowing mode switching condition is not satisfied, the process returns to step S1 and steps S1 and S2 are repeated.
　そして、ステップＳ３では、第２吹出モードでの冷房運転を行う。すなわち、シャッタ５６を閉鎖状態にすることにより下吹出口２２ｂ(第１吹出口)を閉じて、図１０に示すように、上吹出口２２ａ(第２吹出口)から空調空気を吹き出す。 Then, in step S3, the cooling operation is performed in the second blowing mode. That is, the lower outlet 22b (first outlet) is closed by closing the shutter 56, and the conditioned air is blown out from the upper outlet 22a (second outlet) as shown in FIG.
　次に、ステップＳ４に進み、運転停止でないと判断すると、ステップＳ３に戻り、ステップＳ３,Ｓ４を繰り返し、ステップＳ４で運転停止と判断すると、ステップＳ５に進み、運転を停止してこの処理を終了する。 Next, the process proceeds to step S4, and if it is determined that the operation is not stopped, the process returns to step S3, steps S3 and S4 are repeated. do.
　上記構成の床置き型空気調和機は、吹出モードが「自動」で冷房運転を開始すると、室内機２において、図９に示すように、下吹出口２２ｂ(第１吹出口)と上吹出口２２ａ(第２吹出口)とから空調空気を吹き出す(第１吹出モード)。その後、吹出モード切換条件(第１条件)を満たすと、図１０に示すように、下吹出口２２ｂを閉じて上吹出口２２ａから空調空気を吹き出す(第２吹出モード)。 In the floor-standing air conditioner having the above configuration, when the cooling operation is started with the outlet mode set to "automatic", the indoor unit 2 has a lower outlet 22b (first outlet) and an upper outlet as shown in FIG. Air-conditioned air is blown out from 22a (second outlet) (first blowout mode). After that, when the blowout mode switching condition (first condition) is satisfied, as shown in FIG. 10, the lower blowout outlet 22b is closed and the conditioned air is blown out from the upper blowout outlet 22a (second blowout mode).
　このように、第１吹出モードでの冷房運転では、下吹出口２２ｂから空調空気を吹き出し、第２吹出モードでの冷房運転では、第１吹出モードよりも下吹出口２２ｂにおける吹き出し風量を下げてゼロにしている。また、室内制御装置２００は、吹出モード切換条件(第１条件)を満たすときに、第１吹出モードでの冷房運転から第２吹出モードでの冷房運転に切り換えている。これにより、床に向かって冷気を吹き出す下吹出口２２ｂおよび下吹出口２２ｂ周辺の結露を抑制できる。 In this way, in the cooling operation in the first outlet mode, the conditioned air is blown out from the lower outlet 22b, and in the cooling operation in the second outlet mode, the amount of the blown air at the lower outlet 22b is lower than that in the first outlet mode. It is set to zero. Further, when the blowing mode switching condition (first condition) is satisfied, the indoor control device 200 switches from the cooling operation in the first blowing mode to the cooling operation in the second blowing mode. As a result, dew condensation around the lower outlet 22b and the lower outlet 22b that blows cold air toward the floor can be suppressed.
　上記吹出モード切換条件(第１条件)とは、次の１)～５)のすべてを満たすことである。
　１)　冷房運転中
　２)　吹出モードが「自動」
　３)　シャッタ５６を開放状態
　４)　能力供給あり
　５)　判定湿度Ｈｘ　≦　現在の室内湿度Ｈａ
　ここで、判定湿度Ｈｘは、
　　　　Ｈｘ　＝　Ａ×Ｔａ＋Ｂ　　　　(Ａ，Ｂは定数)
により算出される(なお、判定湿度Ｈｘの上限は例えば６０％ＲＨとする)。 The blowout mode switching condition (first condition) is to satisfy all of the following 1) to 5).
1) During cooling operation 2) Blow-out mode is "automatic"
3) Shutter 56 is open 4) Capacity is supplied 5) Judgment humidity Hx ≤ Current indoor humidity Ha
Here, the determined humidity Hx is
Hx = A × Ta + B (A and B are constants)
(Note that the upper limit of the determined humidity Hx is, for example, 60% RH).
　図１１は、室内温度Ｔａと判定湿度Ｈｘとの関係の一例を示している。図１１において、横軸は室内温度Ｔａ[℃]を表し、縦軸は室内湿度Ｈａ[％ＲＨ]を表している。 FIG. 11 shows an example of the relationship between the room temperature Ta and the determined humidity Hx. In FIG. 11, the horizontal axis represents the indoor temperature Ta [° C.], and the vertical axis represents the indoor humidity Ha [% RH].
　図１１では、黒丸(●)の実線で表す直線は、出願人が行った評価試験結果から推定した境界を示し、黒四角(■)の点線で表す直線は、室内温度Ｔａに応じた判定湿度Ｈｘを示している。黒四角(■)の判定湿度Ｈｘは、一例として、黒丸(●)の結露の境界よりも約１０％ＲＨ低い値に設定している。 In FIG. 11, the straight line represented by the solid line of the black circle (●) indicates the boundary estimated from the evaluation test results conducted by the applicant, and the straight line represented by the dotted line of the black square (■) is the determined humidity according to the room temperature Ta. Shows Hx. As an example, the determined humidity Hx of the black square (■) is set to a value about 10% RH lower than the boundary of dew condensation of the black circle (●).
　また、能力供給ありとは、圧縮機１１が動作している状態で、室内機２の室内熱交換器１５を介して冷媒が循環している場合である。例えば、複数の室内機を有するマルチ型空気調和機では、圧縮機１１が動作している状態であっても、当該室内機２の室内熱交換器１５を介して冷媒が循環していない場合は、能力供給なしとなる。 Further, the capacity supply is a case where the refrigerant is circulated through the indoor heat exchanger 15 of the indoor unit 2 while the compressor 11 is operating. For example, in a multi-type air conditioner having a plurality of indoor units, even if the compressor 11 is operating, if the refrigerant does not circulate through the indoor heat exchanger 15 of the indoor unit 2. , No capacity supply.
　また、吹出モードは、リモートコントローラ３００により、冷房運転において、上吹出口２２ａ(第２吹出口)から空調空気を吹き出す「上一方吹出(固定)」とするか、または、上吹出口２２ａ(第２吹出口)から空調空気を吹き出す「上一方吹出」と、下吹出口２２ｂ(第１吹出口)と上吹出口２２ａ(第２吹出口)とから空調空気を吹き出す「上下二方吹出」とを条件に応じて自動的に選択する「自動」に設定される。 Further, the outlet mode is set to "upper one-sided outlet (fixed)" in which the conditioned air is blown out from the upper outlet 22a (second outlet) in the cooling operation by the remote controller 300, or the upper outlet 22a (second outlet) is set. "Upper one-sided outlet" that blows out conditioned air from the lower outlet 22b (first outlet) and "upper and lower two-way outlet" that blows out conditioned air from the lower outlet 22b (first outlet) and upper outlet 22a (second outlet). Is set to "automatic", which automatically selects according to the conditions.
　なお、吹出モード切換条件(第１条件)は、室内湿度センサ２７により検出された室内湿度Ｈａ(相対湿度)と、室内温度センサ２６により検出された室内温度Ｔａとにより得られた露点温度Ｔｄよりも吹出温度が低い状態であるとき、吹出モード切換条件(第１条件)を満たすと判断するようにしてもよい。ここで、吹出温度は、室内温度Ｔａと室内熱交換器１５の温度などを用いて推定する。 The blowing mode switching condition (first condition) is from the dew point temperature Td obtained by the indoor humidity Ha (relative humidity) detected by the indoor humidity sensor 27 and the indoor temperature Ta detected by the indoor temperature sensor 26. However, when the blowing temperature is low, it may be determined that the blowing mode switching condition (first condition) is satisfied. Here, the blowing temperature is estimated using the indoor temperature Ta, the temperature of the indoor heat exchanger 15, and the like.
　冷房運転において、吹出モード切換条件(第１条件)を満たさないときは、第１吹出モードで下吹出口２２ｂと上吹出口２２ａとから空調空気を吹き出すことにより、一方からの吹出よりも風量を多くでき、効率のよい冷房ができる。一方、冷房運転において、吹出モード切換条件(第１条件)を満たすときは、第２吹出モードで下吹出口２２ｂを閉じて上吹出口２２ａのみから吹き出すことにより、下吹出口２２ｂおよび下吹出口２２ｂ周辺の結露を抑制できる。 In the cooling operation, when the blowing mode switching condition (first condition) is not satisfied, the conditioned air is blown out from the lower outlet 22b and the upper outlet 22a in the first blowing mode to increase the air volume more than the blowing from one of them. Many can be done, and efficient cooling can be done. On the other hand, in the cooling operation, when the outlet mode switching condition (first condition) is satisfied, the lower outlet 22b and the lower outlet 22b are blown out only from the upper outlet 22a by closing the lower outlet 22b in the second outlet mode. Condensation around 22b can be suppressed.
　室内湿度Ｈａと室内温度Ｔａとを含む吹出モード切換条件(第１条件)を用いることによって、下吹出口２２ｂおよび下吹出口２２ｂ周辺が結露するリスクが高いか否かを、室内温度Ｔａや室内湿度Ｈａで容易に判定することができる。 By using the outlet mode switching condition (first condition) including the indoor humidity Ha and the indoor temperature Ta, whether or not there is a high risk of dew condensation around the lower outlet 22b and the lower outlet 22b is determined by the indoor temperature Ta and the indoor temperature. It can be easily determined by the humidity Ha.
　室内温度センサ２６により検出された室内温度Ｔａに基づいて決定された判定湿度Ｈｘよりも室内湿度センサ２７により検出された室内湿度Ｈａが高い状態であるとき、吹出モード切換条件(第１条件)を満たすと判断して、下吹出口２２ｂ(第１吹出口)からの吹き出しを止め、下吹出口２２ｂ(第１吹出口)から空調空気を吹き出す第１吹出モードよりも下吹出口２２ｂ(第１吹出口)における吹き出し風量を下げてゼロにする第２吹出モードでの冷房運転を行う。このように、下吹出口２２ｂおよび下吹出口２２ｂ周辺が結露するリスクが高いか否かを、室内温度や室内湿度で容易に判定することができる。 When the indoor humidity Ha detected by the indoor humidity sensor 27 is higher than the determined humidity Hx determined based on the indoor temperature Ta detected by the indoor temperature sensor 26, the blowing mode switching condition (first condition) is set. It is judged that the condition is satisfied, the blowout from the lower outlet 22b (first outlet) is stopped, and the lower outlet 22b (first) is higher than the first outlet mode in which the conditioned air is blown out from the lower outlet 22b (first outlet). The cooling operation is performed in the second blowout mode in which the blowout air volume at the blowout port) is reduced to zero. In this way, it is possible to easily determine whether or not there is a high risk of dew condensation around the lower air outlet 22b and the lower air outlet 22b based on the room temperature and the room humidity.
　なお、変形例として、例えばシャッタ５６を複数のシャッタで構成して、開放状態の複数のシャッタの一部を閉じて下吹出口２２ｂ側の吹出通路を部分的に閉じることによって、吹き出し風量を下げるようにしてもよい。 As a modification, for example, the shutter 56 is composed of a plurality of shutters, and a part of the plurality of shutters in the open state is closed to partially close the blowout passage on the lower blowout port 22b side to reduce the blowout air volume. You may do so.
　〔第２実施形態〕
　図１２は、本開示の第２実施形態の床置き型空気調和機の室内制御装置２００の冷房運転の動作を説明するフローチャートである。この第２実施形態の床置き型空気調和機は、室内制御装置２００の冷房運転の動作を除いて第１実施形態の床置き型空気調和機と同一の構成をしており、図１～図７を援用する。 [Second Embodiment]
FIG. 12 is a flowchart illustrating the operation of the cooling operation of the indoor control device 200 of the floor-standing air conditioner according to the second embodiment of the present disclosure. The floor-standing air conditioner of the second embodiment has the same configuration as the floor-standing air conditioner of the first embodiment except for the operation of the cooling operation of the indoor control device 200, and FIGS. 7 is used.
　室内制御装置２００の冷房運転の動作を図１２のフローチャートに従って説明する。なお、冷房運転の開始前(停止状態)は、水平フラップ３０が閉鎖状態でシャッタ５６が開放状態である。この冷房運転では、吹出モードが「自動」に設定されている。 The operation of the cooling operation of the indoor control device 200 will be described with reference to the flowchart of FIG. Before the start of the cooling operation (stopped state), the horizontal flap 30 is in the closed state and the shutter 56 is in the open state. In this cooling operation, the blowing mode is set to "automatic".
　ここで、吹出モードの設定が「自動」での冷房運転の要求を受けると、まず、ステップＳ１１で積算時間ｔｃが所定時間ｔｘ１(この実施形態では６０ｍｉｎ)を越えているか否かを判定する。そして、ステップＳ１１で積算時間ｔｃが所定時間ｔｘ１(この実施形態では６０ｍｉｎ)を越えているとき、ステップＳ１６に進む一方、積算時間ｔｃが所定時間ｔｘ１以下のとき、ステップＳ１２に進む。 Here, when the request for the cooling operation is received when the blowing mode is set to "automatic", first, in step S11, it is determined whether or not the integrated time ct exceeds the predetermined time tx1 (60 min in this embodiment). Then, when the integrated time ct exceeds the predetermined time tx1 (60 min in this embodiment) in step S11, the process proceeds to step S16, while when the integrated time ct is equal to or less than the predetermined time tx1, the process proceeds to step S12.
　次に、ステップＳ１２に進み、第１吹出モードでの冷房運転を行う。すなわち、水平フラップ３０とシャッタ５６とを開放状態にして室内ファン１８を駆動することにより、図９に示すように、下吹出口２２ｂ(第１吹出口)と上吹出口２２ａ(第２吹出口)とから空調空気を吹き出す。 Next, the process proceeds to step S12, and the cooling operation in the first blowing mode is performed. That is, by driving the indoor fan 18 with the horizontal flap 30 and the shutter 56 open, the lower outlet 22b (first outlet) and the upper outlet 22a (second outlet) are driven, as shown in FIG. ) And blow out conditioned air.
　次に、ステップＳ１３に進み、吹出モード切換条件を満たすと判断すると、ステップＳ１４に進む一方、吹出モード切換条件を満たさないと判断すると、ステップＳ１２に戻り、ステップＳ１２,Ｓ１３を繰り返す。 Next, the process proceeds to step S13, and if it is determined that the blowout mode switching condition is satisfied, the process proceeds to step S14, while if it is determined that the blowout mode switching condition is not satisfied, the process returns to step S12, and steps S12 and S13 are repeated.
　次に、ステップＳ１４で積算時間ｔｃをカウントする。 Next, the integrated time ct is counted in step S14.
　次に、ステップＳ１５に進み、積算時間ｔｃが所定時間ｔｘ１(この実施形態では６０ｍｉｎ)を越えたとき、ステップＳ１６に進む一方、積算時間ｔｃが所定時間ｔｘ１以下のとき、ステップＳ１２に戻る。 Next, the process proceeds to step S15, and when the integrated time ct exceeds the predetermined time tx1 (60 min in this embodiment), the process proceeds to step S16, while when the integrated time ct is the predetermined time tx1 or less, the process returns to step S12.
　そして、ステップＳ１６では、第２吹出モードでの冷房運転を行う。すなわち、シャッタ５６を閉鎖状態にすることにより下吹出口２２ｂ(第１吹出口)を閉じて、図１０に示すように、上吹出口２２ａ(第２吹出口)から空調空気を吹き出す。 Then, in step S16, the cooling operation is performed in the second blowing mode. That is, the lower outlet 22b (first outlet) is closed by closing the shutter 56, and the conditioned air is blown out from the upper outlet 22a (second outlet) as shown in FIG.
　次に、ステップＳ１７に進み、冷房運転の終了でないと判断すると、ステップＳ１６に戻り、ステップＳ１６,１７を繰り返し、ステップＳ１７で冷房運転の終了と判断すると、ステップＳ１８に進み、冷房運転を終了してこの処理を終了する。 Next, the process proceeds to step S17, and if it is determined that the cooling operation is not completed, the process returns to step S16, steps S16 and 17 are repeated, and if it is determined in step S17 that the cooling operation is completed, the process proceeds to step S18 and the cooling operation is completed. End the lever processing.
　また、図１２の冷房運転の処理と並行して、積算時間ｔｃのクリア処理が繰り返し行われる。 Further, in parallel with the processing of the cooling operation shown in FIG. 12, the processing of clearing the integrated time ct is repeatedly performed.
　このクリア処理がスタートすると、まず、ステップＳ２１で所定のクリア条件を所定時間ｔｘ２以上継続したと判断すると、ステップＳ２２に進み、積算時間ｔｃをクリアして処理を終了する。また、ステップＳ２１でクリア条件を所定時間ｔｘ２以上継続していないと判断すると、ステップＳ２１を繰り返す。 When this clearing process starts, first, if it is determined in step S21 that the predetermined clearing condition has been continued for a predetermined time tx2 or more, the process proceeds to step S22, the integrated time ct is cleared, and the process ends. Further, if it is determined in step S21 that the clearing condition is not continued for a predetermined time tx2 or more, step S21 is repeated.
　上記床置き型空気調和機は、吹出モード切換条件(第１条件)を満たしているときの積算時間ｔｃをカウントし、その積算時間ｔｃが所定時間ｔｘ１を越えたとき、第１吹出モードでの冷房運転から第２吹出モードでの冷房運転に切り換える。 The floor-standing air conditioner counts the integrated time ct when the blowout mode switching condition (first condition) is satisfied, and when the integrated time ct exceeds the predetermined time tx1, in the first blowout mode. The cooling operation is switched to the cooling operation in the second blowing mode.
　また、室内制御装置２００は、積算時間ｔｃをカウントしているとき、所定のクリア条件を満たすと積算時間ｔｃのカウントをクリアする。ここで、所定のクリア条件は、次のａ)～ｃ)のいずれかの状態が所定時間ｔｘ２(この実施形態では３０ｍｉｎ)以上継続することである。
　ａ)　冷房運転中において吹出モードが「自動」でない
　ｂ)　冷房運転以外の運転中
　ｃ)　運転停止中(サーモオフを含まない)
　なお、クリア条件は、上記のａ)～ｃ)に限らず、他の条件を適宜組み合わせてもよい。 Further, when the indoor control device 200 is counting the integrated time ct, the room control device 200 clears the count of the integrated time ct when a predetermined clear condition is satisfied. Here, the predetermined clearing condition is that any of the following a) to c) states continue for a predetermined time tx2 (30 min in this embodiment) or more.
a) The blowing mode is not "automatic" during cooling operation b) During operation other than cooling operation c) Operation is stopped (excluding thermo-off)
The clearing conditions are not limited to a) to c) above, and other conditions may be appropriately combined.
　このように、上記構成の床置き型空気調和機では、吹出モード切換条件(第１条件)を満たしているときの積算時間ｔｃをカウントし、その積算時間ｔｃが所定時間ｔｘ１を越えたとき、第１吹出モードから第２吹出モードに切り換えることにより、できるだけ長く第１吹出モードで室内を効率よく冷房できる。 As described above, in the floor-standing air conditioner having the above configuration, the integrated time ct when the blowing mode switching condition (first condition) is satisfied is counted, and when the integrated time ct exceeds the predetermined time tx1. By switching from the first blowing mode to the second blowing mode, the room can be efficiently cooled in the first blowing mode for as long as possible.
　また、運転停止を含む所定のクリア条件を所定時間ｔｘ２以上継続したときに積算時間ｔｃのカウントをクリアすることにより、次に冷房運転を開始したときに積算時間ｔｃをゼロからスタートさせることで、次の冷房運転においても第１吹出モードでの運転を長くでき、室内を効率よく冷房できる。なお、サーモオフ中は積算時間ｔｃのカウントを中断する。 Further, by clearing the count of the integrated time ct when the predetermined clearing condition including the operation stop is continued for the predetermined time tx2 or more, the integrated time ct is started from zero when the cooling operation is started next time. In the next cooling operation, the operation in the first blowing mode can be lengthened, and the room can be efficiently cooled. During the thermo-off, the counting of the accumulated time ct is interrupted.
　上記第２実施形態の床置き型空気調和機は、第１実施形態の床置き型空気調和機と同様の効果を有する。 The floor-standing air conditioner of the second embodiment has the same effect as the floor-standing air conditioner of the first embodiment.
　上記第１,第２実施形態では、上吹出口２２ａ(第２吹出口)と下吹出口２２ｂ(第１吹出口)とを有する室内機２について説明したが、床に向かって空調空気を吹き出す吹出口を１つ有する室内機にこの開示を適用してもよい。その場合、吹出口から空調空気を吹き出す第１吹出モードでの冷房運転、および第１吹出モードよりも吹出口における吹き出し風量を下げる第２吹出モードでの冷房運転を制御部によって制御する。 In the first and second embodiments, the indoor unit 2 having the upper outlet 22a (second outlet) and the lower outlet 22b (first outlet) has been described, but the conditioned air is blown toward the floor. This disclosure may be applied to an indoor unit having one air outlet. In that case, the control unit controls the cooling operation in the first outlet mode in which the conditioned air is blown out from the outlet, and the cooling operation in the second outlet mode in which the amount of the blown air at the outlet is lower than that in the first outlet mode.
　上記第１,第２実施形態では、室内温度Ｔａを検出する室内温度センサ２６と、室内湿度Ｈａを検出する室内湿度センサ２７とを有する室内機２について説明したが、室内温度センサや室内湿度センサを備えず、外部から室内温度を表す信号と室内湿度を表す信号を受ける床置き型空気調和機に本開示を適用してもよい。 In the first and second embodiments, the indoor unit 2 having the indoor temperature sensor 26 for detecting the indoor temperature Ta and the indoor humidity sensor 27 for detecting the indoor humidity Ha has been described. However, the indoor temperature sensor and the indoor humidity sensor have been described. The present disclosure may be applied to a floor-standing air conditioner that does not have the above and receives a signal indicating indoor temperature and a signal indicating indoor humidity from the outside.
　本開示の具体的な実施の形態について説明したが、本開示は上記第１,第２実施形態に限定されるものではなく、本開示の範囲内で種々変更して実施することができる。 Although the specific embodiments of the present disclosure have been described, the present disclosure is not limited to the first and second embodiments described above, and various modifications can be made within the scope of the present disclosure.
　１…室外機
　２…室内機
　１１…圧縮機
　１２…四路切換弁
　１３…室外熱交換器
　１４…電動膨張弁
　１５…室内熱交換器
　１６…アキュムレータ
　１７…室外ファン
　１８…室内ファン(遠心ファン)
　２０…ケーシング
　２１…底フレーム
　２２…前フレーム
　２２ａ…上吹出口(第２吹出口)
　２２ｂ…下吹出口(第１吹出口)
　２３…吸込パネル
　２４…断熱材
　２５…ダクト部
　２６…室内温度センサ
　２７…室内湿度センサ
　３０…水平フラップ
　４０…ファンガード
　５１…ドレンパン
　５２…断熱材
　５３…モータ
　５４…ベルマウス
　１００…室外制御装置
　２００…室内制御装置
　Ｍ１…シャッタ用駆動モータ
　Ｍ２…水平フラップ用駆動モータ
　ＲＣ…冷媒回路 1 ... Outdoor unit 2 ... Indoor unit 11 ... Compressor 12 ... Four-way switching valve 13 ... Outdoor heat exchanger 14 ... Electric expansion valve 15 ... Indoor heat exchanger 16 ... Accumulator 17 ... Outdoor fan 18 ... Indoor fan (centrifugal fan)
20 ... Casing 21 ... Bottom frame 22 ... Front frame 22a ... Upper outlet (second outlet)
22b ... Lower outlet (first outlet)
23 ... Suction panel 24 ... Insulation material 25 ... Duct part 26 ... Indoor temperature sensor 27 ... Indoor humidity sensor 30 ... Horizontal flap 40 ... Fan guard 51 ... Drain pan 52 ... Insulation material 53 ... Motor 54 ... Bellmouth 100 ... Outdoor control device 200 ... Indoor control device M1 ... Shutter drive motor M2 ... Horizontal flap drive motor RC ... Refrigerant circuit

Claims (7)

  1. 　床に向かって空調空気を吹き出す第１吹出口(２２ｂ)と、
    　上記第１吹出口(２２ｂ)から空調空気を吹き出す第１吹出モードでの冷房運転、および上記第１吹出モードよりも上記第１吹出口(２２ｂ)における吹き出し風量を下げる第２吹出モードでの冷房運転を制御する制御部(２００)と
    を備え、
    　上記制御部(２００)は、室内湿度Ｈａを含む第１条件を満たすときに、上記第１吹出モードから上記第２吹出モードに切り換える、床置き型空気調和機。     The first outlet (22b) that blows conditioned air toward the floor,
    Cooling operation in the first outlet mode in which conditioned air is blown out from the first outlet (22b), and cooling in the second outlet mode in which the amount of air blown out at the first outlet (22b) is lower than that in the first outlet mode. It is equipped with a control unit (200) that controls operation.
    The control unit (200) is a floor-standing air conditioner that switches from the first blowing mode to the second blowing mode when the first condition including the indoor humidity Ha is satisfied.
  2. 　請求項１に記載の床置き型空気調和機において、
    　天井に向かって空調空気を吹き出す第２吹出口(２２ａ)を備え、
    　上記第１吹出モードにおいて、上記第１吹出口(２２ｂ)と上記第２吹出口(２２ａ)とから空調空気を吹き出し、
    　上記第２吹出モードにおいて、上記第１吹出口(２２ｂ)を閉じて上記第２吹出口(２２ａ)から空調空気を吹き出す、床置き型空気調和機。     In the floor-standing air conditioner according to claim 1,
    Equipped with a second outlet (22a) that blows conditioned air toward the ceiling,
    In the first outlet mode, conditioned air is blown out from the first outlet (22b) and the second outlet (22a).
    A floor-standing air conditioner that closes the first outlet (22b) and blows out conditioned air from the second outlet (22a) in the second outlet mode.
  3. 　請求項１または２に記載の床置き型空気調和機において、
    　上記第１条件は室内温度Ｔａを含む、床置き型空気調和機。     In the floor-standing air conditioner according to claim 1 or 2.
    The first condition is a floor-standing air conditioner including an indoor temperature Ta.
  4. 　請求項３に記載の床置き型空気調和機において、
    　上記第１条件は、上記室内温度Ｔａに基づいて決定された判定湿度Ｈｘよりも上記室内湿度Ｈａが高い状態である、床置き型空気調和機。     In the floor-standing air conditioner according to claim 3,
    The first condition is a floor-standing air conditioner in which the indoor humidity Ha is higher than the determined humidity Hx determined based on the indoor temperature Ta.
  5. 　請求項３に記載の床置き型空気調和機において、
    　上記第１条件は、上記室内湿度Ｈａと上記室内温度Ｔａとにより得られた露点温度Ｔｄよりも吹出温度が低い状態である、床置き型空気調和機。     In the floor-standing air conditioner according to claim 3,
    The first condition is a floor-standing air conditioner in which the blowing temperature is lower than the dew point temperature Td obtained by the indoor humidity Ha and the indoor temperature Ta.
  6. 　請求項１から５のいずれか１つに記載された床置き型空気調和機において、
    　上記制御部(２００)は、上記第１条件を満たしているときの積算時間ｔｃをカウントし、その積算時間ｔｃが所定時間ｔｘ１を越えたとき、上記第１吹出モードから上記第２吹出モードに切り換える、床置き型空気調和機。     In the floor-standing air conditioner according to any one of claims 1 to 5.
    The control unit (200) counts the integrated time ct when the first condition is satisfied, and when the integrated time ct exceeds a predetermined time tx1, the first blowing mode is changed to the second blowing mode. A floor-standing air conditioner that can be switched.
  7. 　請求項６に記載された床置き型空気調和機において、
    　上記制御部(２００)は、上記積算時間ｔｃをカウントしているとき、運転停止を含む所定のクリア条件を満たすと上記積算時間ｔｃのカウントをクリアする、床置き型空気調和機。     In the floor-standing air conditioner according to claim 6,
    The control unit (200) is a floor-standing air conditioner that clears the count of the integrated time ct when a predetermined clear condition including an operation stop is satisfied when the integrated time ct is counted.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07190460A (en) * 1993-12-27 1995-07-28 Hitachi Ltd Air conditioner system
JP2007218541A (en) * 2006-02-17 2007-08-30 Sharp Corp Air conditioner
WO2007123078A1 (en) * 2006-04-18 2007-11-01 Daikin Industries, Ltd. Air conditioner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62276354A (en) * 1986-05-23 1987-12-01 Matsushita Electric Ind Co Ltd Ventilation circuit controller of air conditioner
JP3784753B2 (en) * 1992-08-26 2006-06-14 三菱電機株式会社 Air conditioner wind direction adjusting device
JP4619983B2 (en) * 2006-04-14 2011-01-26 シャープ株式会社 Air conditioner
JP5720657B2 (en) * 2012-11-02 2015-05-20 ダイキン工業株式会社 Floor-mounted air conditioning indoor unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07190460A (en) * 1993-12-27 1995-07-28 Hitachi Ltd Air conditioner system
JP2007218541A (en) * 2006-02-17 2007-08-30 Sharp Corp Air conditioner
WO2007123078A1 (en) * 2006-04-18 2007-11-01 Daikin Industries, Ltd. Air conditioner

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