WO2024023916A1 - Climatiseur - Google Patents

Climatiseur Download PDF

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Publication number
WO2024023916A1
WO2024023916A1 PCT/JP2022/028739 JP2022028739W WO2024023916A1 WO 2024023916 A1 WO2024023916 A1 WO 2024023916A1 JP 2022028739 W JP2022028739 W JP 2022028739W WO 2024023916 A1 WO2024023916 A1 WO 2024023916A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
indoor
heat exchanger
temperature
air conditioner
Prior art date
Application number
PCT/JP2022/028739
Other languages
English (en)
Japanese (ja)
Inventor
龍一 永田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/028739 priority Critical patent/WO2024023916A1/fr
Publication of WO2024023916A1 publication Critical patent/WO2024023916A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/74—Ozone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/10—Weather information or forecasts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/20—Sunlight

Definitions

  • the present invention relates to an air conditioner that dehumidifies a room that is an air-conditioned space.
  • Patent Document 1 discloses a technique for lowering the air volume in order to lower the evaporator temperature.
  • one example of conventional technology is to reduce the air volume in order to lower the evaporation temperature.
  • the lower limits of the rotational speed and air volume of an indoor blower are limited by deterioration in controllability due to short cycles and increased inverter loss in motor control. Therefore, when the air conditioning load is small, it is difficult to lower the evaporation temperature by lowering the rotation speed of the indoor blower. It is more difficult to reduce the air volume than when the rotational speed of the indoor blower is at its minimum value. In this case, by increasing the frequency of the compressor, the pressure difference between the high-pressure refrigerant and the low-pressure refrigerant increases, so the evaporation temperature can be lowered. However, since the air conditioning capacity becomes excessive, energy consumption increases.
  • the present invention has been made to solve the above-mentioned problems, and even when the air conditioning load is small and the rotational speed of the indoor fan is at its minimum value, by lowering the air volume, the evaporation temperature can be lowered and dehumidified.
  • the aim is to obtain an air conditioner that can.
  • the air conditioner according to the present invention includes a heat exchanger that exchanges heat with air by evaporating or condensing a refrigerant, an inlet that sucks air, and an outlet that blows out the air that has been heat exchanged into the room.
  • a heat exchanger that exchanges heat with air by evaporating or condensing a refrigerant
  • an inlet that sucks air
  • an outlet that blows out the air that has been heat exchanged into the room.
  • FIG. 2 is a sectional view of the indoor unit of the present invention. It is a psychrometric diagram showing the relationship between dry bulb temperature, wet bulb temperature, dew point temperature, relative humidity, and absolute humidity.
  • 5 is a flowchart of a dehumidifying operation mode of the air conditioner in Embodiment 1.
  • FIG. 7 is a flowchart of a dehumidifying operation mode of the air conditioner in Embodiment 2.
  • FIG. 1 is a refrigerant circuit diagram of an air conditioner 50 according to the present embodiment.
  • FIG. 2 is a sectional view of the indoor unit 20 according to this embodiment.
  • the outdoor unit 10 includes a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, an outdoor blower 14, an expansion valve 15, an outdoor control device 16, and a calculation device 17. , a discharge temperature sensor 40 , and an outdoor heat exchanger temperature sensor 41 .
  • the indoor unit 20 includes an indoor heat exchanger 22, an indoor blower 23, an indoor control device 24, a suction temperature sensor 42, a suction humidity sensor 43, and an indoor heat exchanger temperature sensor 44.
  • the outdoor unit 10 and the indoor unit 20 are connected by a gas extension pipe 30 and a liquid extension pipe 31. Further, the indoor unit 20 is attached with a remote controller 32 (hereinafter referred to as remote controller 32).
  • the indoor blower 23 is shown as an axial propeller fan, but it may be a once-through cross-flow fan.
  • the compressor 11 is a device that compresses and discharges the sucked refrigerant, and is composed of, for example, a rotary compressor or a scroll compressor.
  • the compressor 11 compresses a low-temperature, low-pressure refrigerant to convert it into a high-temperature, high-pressure refrigerant.
  • the compressor 11 then flows out the high temperature and high pressure refrigerant to the four-way valve 12 .
  • a discharge temperature sensor 40 is arranged in the flow path between the compressor 11 and the four-way valve 12.
  • the discharge temperature sensor 40 measures the temperature of the refrigerant discharged from the compressor 11. Note that in this embodiment, the discharge temperature sensor 40 is provided in the flow path between the compressor 11 and the four-way valve 12, but it may also be provided above the container of the compressor 11.
  • the four-way valve 12 is configured to switch the flow of refrigerant. Specifically, the four-way valve 12 is configured to switch the flow of refrigerant to the outdoor heat exchanger 13 or the indoor heat exchanger 22 depending on cooling operation, defrosting operation, and heating operation. There is.
  • the outdoor heat exchanger 13 condenses or evaporates the inflowing refrigerant to exchange heat with the air and cool or heat the air.
  • the outdoor heat exchanger 13 serves as a condenser that condenses the refrigerant compressed by the compressor 11 during cooling operation.
  • the outdoor heat exchanger 13 serves as an evaporator that evaporates the refrigerant whose pressure has been reduced by the expansion valve 15 during heating operation.
  • the outdoor heat exchanger 13 includes, for example, a pipe (heat transfer tube) through which a refrigerant flows, and fins attached to the outside of the pipe.
  • the outdoor blower 14 includes an outdoor blower fan and a fan motor that rotates the outdoor blower fan.
  • the outdoor blower 14 blows the air heat-exchanged by the outdoor heat exchanger 13 to the outside at the rotation speed of the outdoor blower fan.
  • the expansion valve 15 expands the refrigerant that has flowed in. At this time, the refrigerant undergoes isenthalpic expansion and changes to a low-pressure refrigerant.
  • the expansion valve 15 allows the low-pressure refrigerant to flow out to the indoor heat exchanger 22 via the liquid extension pipe 31 .
  • the outdoor control device 16 is provided in the outdoor unit 10.
  • the outdoor control device 16 detects and controls the rotational speed of the outdoor blower 14, the frequency of the compressor 11, and the like. Furthermore, the four-way valve 12 is switched between cooling operation and heating operation.
  • the computing device 17 is provided in the outdoor unit 10.
  • the arithmetic unit 17 compares the data detected by the sensor and the data set by the remote controller 32 in terms of magnitude.
  • the calculation device 17 performs calculations related to the operation of the indoor unit 20, the calculation results are transmitted to the indoor control device 24.
  • the computing device 17 is provided only in the outdoor unit 10, but may be provided in the indoor unit 20.
  • a calculation device is provided in each of the outdoor unit 10 and the indoor unit 20
  • calculations related to the operation of the outdoor unit 10 are performed by the calculation device provided on the outdoor unit 10 side, and calculations related to the operation of the indoor unit 20 are performed by the indoor unit. This is performed by a calculation device provided on the 20 side.
  • the air conditioner 50 includes a remote control 32.
  • the remote control 32 sends a signal including instructions, settings, etc. input by the user to the indoor control device 24.
  • a suction humidity sensor 43 In the cross-sectional view of the indoor unit 20 shown in FIG. , a suction humidity sensor 43, an indoor heat exchanger temperature sensor 44, a first filter 45, a flap 46, and a louver 47.
  • the housing 21 has its longitudinal direction in the Y-axis direction, and has a suction port 21a formed above the housing 21 for sucking air, and has an indoor heat exchanger 22 below the housing 21 for heat exchange.
  • An air outlet 21b is formed to blow out the air.
  • the indoor heat exchanger 22 has a multi-stage bent structure and is provided so as to surround the indoor blower 23 from the front to the back.
  • the indoor heat exchanger 22 serves as an evaporator that evaporates the refrigerant whose pressure has been reduced by the expansion valve 15 during cooling operation.
  • the indoor heat exchanger 22 serves as a condenser that condenses the refrigerant compressed by the compressor 11 during heating operation.
  • the indoor heat exchanger 22 includes, for example, a pipe (heat transfer tube) through which a refrigerant flows, and fins attached to the outside of the pipe.
  • the indoor blower 23 By rotating, the indoor blower 23 generates a series of airflows in which air is sucked in from the suction port 21a and air that has been heat exchanged by the indoor heat exchanger 22 is blown out from the blowout port 21b.
  • the indoor control device 24 is provided in the indoor unit 20.
  • the rotation speed of the indoor blower 23, the angle of the flap 46 and the louver 47, and the operation of the variable air path resistance mechanism 48 are detected and controlled. Furthermore, the indoor control device 24 receives the results calculated by the arithmetic device 17 and reflects them in the operation of the indoor unit 20.
  • the first filter 45 is provided on the windward side of the indoor heat exchanger 22. This first filter 45 removes dust and dirt contained in the air sucked in through the suction port 21a, thereby preventing the indoor heat exchanger 22 from becoming dirty.
  • the air outlet 21b located on the leeward side of the indoor heat exchanger 22 is provided with an air flow path variable mechanism, which includes a flap 46 that changes the vertical direction and a louver 47 that changes the horizontal direction. There is.
  • the suction temperature sensor 42 is arranged on the upstream side of the air passing through the indoor heat exchanger 22 so as to be in contact with the air sucked in from the suction port 21a.
  • the suction temperature sensor 42 is, for example, a thermistor.
  • the suction humidity sensor 43 is placed a predetermined distance away from the indoor heat exchanger 22 so as to be less susceptible to the influence of heat exchange performed by the indoor heat exchanger 22.
  • the air conditioner 50 of this embodiment is switched between cooling operation and heating operation by switching the circulation direction of the refrigerant in the refrigerant circuit using the four-way valve 12.
  • the refrigerant circulates in the order of the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the expansion valve 15, the liquid extension pipe 31, the indoor heat exchanger 22, and the gas extension pipe 30.
  • the outdoor heat exchanger 13 functions as a condenser
  • the indoor heat exchanger 22 functions as an evaporator.
  • the refrigerant circulates through the compressor 11 , the four-way valve 12 , the gas extension pipe 30 , the indoor heat exchanger 22 , the liquid extension pipe 31 , the expansion valve 15 , and the outdoor heat exchanger 13 in this order.
  • the indoor heat exchanger 22 functions as a condenser
  • the outdoor heat exchanger 13 functions as an evaporator.
  • Gas refrigerant or two-phase refrigerant flows through the gas extension pipe 30 during cooling operation, and gas refrigerant flows during heating operation. Furthermore, a two-phase refrigerant flows through the liquid extension pipe 31 during cooling operation, and a liquid refrigerant flows during heating operation.
  • the dehumidifying operation of the air conditioner 50 in this embodiment will be described.
  • the same refrigeration cycle as in the cooling operation is operated.
  • the refrigerant discharged from the compressor 11 flows into the outdoor heat exchanger 13 via the four-way valve 12.
  • the outdoor heat exchanger 13 acts as a condenser.
  • the refrigerant undergoes adiabatic expansion at the expansion valve 15, becomes a gas-liquid two-phase refrigerant, and flows into the indoor heat exchanger 22.
  • the indoor heat exchanger 22 acts as an evaporator, and the gas-liquid two-phase refrigerant that has flowed therein becomes a gas refrigerant (or a gas-liquid two-phase refrigerant with a dryness of 0.95 or more) and is sucked into the compressor 11.
  • the refrigerant temperature of the indoor heat exchanger 22 (evaporator) is higher than the dew point temperature of the air supplied to the indoor heat exchanger 22.
  • Air is supplied to the indoor unit 20 by the indoor blower 23.
  • the air supplied to the indoor unit 20 undergoes heat exchange with the refrigerant in the indoor heat exchanger 22, and the dry bulb temperature and wet bulb temperature of the air decrease.
  • the refrigerant temperature is higher than the dew point temperature of the heat-exchanged air, the moisture in the air remains retained in the air. Therefore, since only the dry bulb temperature will decrease, the air will not be dehumidified.
  • FIG. 3 is a psychrometric diagram showing the relationship between dry bulb temperature, wet bulb temperature, dew point temperature, relative humidity, and absolute humidity.
  • the dry bulb temperature is 24 degrees to 27 degrees and the relative humidity is 40% to 60%, as shown in the shaded area in FIG. 3, the air is considered comfortable.
  • Dehumidification is required to maintain comfortable air when the dry bulb temperature is 24 degrees to 27 degrees, the relative humidity is 60% or more, and the dew point temperature is 18.6 degrees.
  • the dew point temperature of 18.6 degrees is used as a threshold value, and the refrigerant temperature of the evaporator is compared with the dew point temperature of 18.6 degrees. Decide on controlled operation.
  • the air volume of the indoor unit 20 is reduced.
  • the rotation speed of the indoor blower 23 is reduced.
  • a pressure loss body appears at any point from the suction port 21a to the blowout port 21b, so that the indoor blower 23 The air volume of the indoor unit 20 is lowered than the air volume when the rotation speed of the indoor unit 20 is at the minimum value.
  • the flap 46 and the louver 47 are used as the first pressure loss body.
  • step S1 First, the main power of the air conditioner 50 is turned on via the remote control 32, and the air conditioner 50 is put into an operation ready state. Subsequently, a driving mode is selected using the remote control 32, and the desired driving mode is set. Typical operation modes include a cooling operation mode, a heating operation mode, and a dehumidification operation mode. Thereby, the air conditioner 50 starts operating in the desired operation mode. If the cooling operation mode or the dehumidification operation mode is selected and the dehumidification operation is started, the process advances to step S2.
  • the indoor target temperature setting T and the indoor target humidity setting ⁇ are set via the remote controller 32.
  • step S2 At the start of the dehumidifying operation, the suction temperature Tai is detected using the suction temperature sensor 42.
  • the arithmetic unit 17 compares the data of the target setting temperature T instructed to the remote controller 32 and the data of the suction temperature Tai detected by the suction temperature sensor 42 in terms of magnitude. As a result of the comparison, if T>Tai, the process advances to step S3. On the other hand, if T ⁇ Tai, the process advances to step S2.
  • the suction humidity sensor 43 is used to detect the suction humidity ⁇ ai.
  • the arithmetic unit 17 compares the data of the target setting humidity ⁇ instructed to the remote controller 32 and the data of the suction humidity ⁇ ai detected by the suction humidity sensor 43 in terms of magnitude. As a result of the comparison, if ⁇ ai, the process advances to step S4. On the other hand, if ⁇ ai, the process advances to step S2.
  • the indoor heat exchanger temperature sensor 44 is used to detect the refrigerant temperature.
  • the arithmetic unit 17 compares the refrigerant temperature detected by the indoor heat exchanger temperature sensor 44 with the dew point temperature of 18.6 degrees. As a result of the comparison, if the refrigerant temperature>dew point temperature is 18.6 degrees, the process proceeds to step S5. On the other hand, if the refrigerant temperature ⁇ dew point temperature is 18.6 degrees, the process proceeds to step S2.
  • step S5 The indoor control device 24 controls the rotation speed of the indoor blower 23.
  • step S4 when the calculation device 17 detects that the refrigerant temperature is higher than the dew point temperature of 18.6 degrees, the indoor control device 24 reduces the rotation speed of the indoor blower 23.
  • the indoor control device 24 detects the rotation speed of the indoor blower 23 and controls it. As a result of the detection, if the rotation speed of the indoor blower 23 is the minimum value, the process advances to step S8. On the other hand, if the rotation speed of the indoor blower 23 is not the minimum value, the process advances to step S7.
  • step S4 if the rotation speed of the indoor blower 23 is not the minimum value, the indoor control device 24 lowers the rotation speed of the indoor blower 23, and then the process proceeds to step S2.
  • the indoor control device 24 When the indoor control device 24 detects that the rotation speed of the indoor blower 23 is at the minimum value, it starts a controlled operation of the first pressure loss body so that the air volume of the indoor unit 20 is reduced. Specifically, the angle of the flap 46 is adjusted so that it is fully closed with respect to the direction in which the maximum air volume is generated, and the angle of the louver 47 is adjusted to face either the left or right direction rather than the front, thereby reducing the wind path resistance. Put on.
  • the indoor control device 24 detects the air volume when the control operation of the first pressure loss body is in operation. If the indoor control device 24 activates the control operation of the first pressure loss body and detects that the air volume is at the minimum value, the process proceeds to step S10. On the other hand, if the air volume is not the minimum value, the process advances to step S8.
  • step S10 The effect of increasing the frequency of the compressor 11 in step S10 will be explained. Since the frequency of the compressor 11 is increased to increase the flow rate of refrigerant in the refrigerant circuit, the evaporation temperature decreases and the refrigerant temperature becomes the dew point temperature of 18.6 degrees or less. Therefore, dehumidification operation becomes possible again.
  • step S10 when the indoor control device 24 detects that the frequency of the compressor 11 has increased, it stops the controlled operation of the first pressure loss body.
  • step S11 the outdoor control device 16 increases the frequency of the compressor 11, but the frequency has an upper limit value in consideration of safety.
  • the outdoor control device 16 detects that the frequency of the compressor 11 has reached the upper limit value, the dehumidification operation ends. On the other hand, if the frequency of the compressor 11 has not reached the upper limit value, the process advances to step S2.
  • the air conditioner according to Embodiment 1 of the present invention drives the first pressure loss body when it is detected that the refrigerant temperature is >18.6 degrees and the rotation speed of the indoor fan is the minimum value.
  • dehumidifying operation can be performed without increasing the frequency of the compressor, which is also effective in reducing energy consumption.
  • the frequency of the compressor is increased and the refrigerant temperature in the evaporator is lowered to finally achieve ⁇ ai. be able to.
  • Embodiment 2 The air conditioner according to the present embodiment will be described with a focus on the points that are different from the configuration and operation of the air conditioner 50 according to the first embodiment.
  • a suction humidity sensor 43 In the cross-sectional view of the indoor unit 20 shown in FIG. , a suction humidity sensor 43 , an indoor heat exchanger temperature sensor 44 , a first filter 45 , a flap 46 , a louver 47 , and an air path resistance variable mechanism 48 .
  • variable air path resistance mechanism 48 is provided to cover the entire first filter 45 or a portion of the upstream or downstream side.
  • the variable air path mechanism 48 may be a second filter that is finer than the roughness of the first filter 45, or a drivable plate material.
  • an air path resistance variable mechanism 48 is used as the second pressure loss body.
  • a pressure loss body storage mechanism is provided that can store the second pressure loss body. When the second pressure loss body is used, it is made to emerge from the pressure loss body storage mechanism, and when the second pressure loss body is not used, it is stored in the pressure loss body storage mechanism.
  • a pressure loss body storage mechanism is provided, but it is not necessarily necessary to provide it. For example, the user may provide the second pressure loss body in accordance with the amount of decrease in air volume.
  • FIG. 5 is a flowchart of a method of operating the air conditioner 50 during dehumidification operation according to the second embodiment of the present invention.
  • the dehumidifying operation of the air conditioner 50 according to the present embodiment will be described along the flowchart shown in FIG. 5.
  • differences from the dehumidifying operation of the air conditioner 50 according to the first embodiment shown in FIG. 4 will be mainly explained.
  • steps S1 to S7 are similar to the dehumidification operation according to the first embodiment shown in FIG.
  • the indoor control device 24 When the indoor control device 24 detects that the rotation speed of the indoor blower 23 is at the minimum value, it starts controlling the second pressure loss body so that the air volume of the indoor unit 20 decreases.
  • the second filter is stacked on the first filter 45, or a portion of the upstream or downstream side of the first filter 45 is covered with a plate material.
  • the indoor control device 24 detects the air volume when the second pressure loss body is being controlled. If the indoor control device 24 detects that the air volume is at the minimum value even if the second pressure loss body is controlled, the process proceeds to step S10. On the other hand, if the air volume is not the minimum value, the process advances to step S8.
  • step S10 when the indoor control device 24 detects that the frequency of the compressor 11 has increased, it stops the controlled operation of the second pressure loss body.
  • step S11 the outdoor control device 16 increases the frequency of the compressor 11, but the frequency has an upper limit value in consideration of safety.
  • the outdoor control device 16 detects that the frequency of the compressor 11 has reached the upper limit value, the dehumidification operation ends. On the other hand, if the frequency of the compressor 11 has not reached the upper limit value, the process advances to step S2.
  • variable air path resistance mechanism 48 is used as the second pressure loss body, and the flap 46 and the louver 47 are used as the variable air path mechanism. , may be combined as appropriate. Specifically, the flap 46, the louver 47, and the variable air path resistance mechanism 48 may be used as the pressure loss body.
  • the air conditioner according to the second embodiment of the present invention drives the second pressure loss body when it is detected that the refrigerant temperature is >18.6 degrees and the rotation speed of the indoor fan is the minimum value.
  • dehumidifying operation can be performed without increasing the frequency of the compressor, which is also effective in reducing energy consumption.
  • the flap 46 and the louver 47 can be used only as a variable air path mechanism, it is also possible to perform dehumidification operation and set the air direction according to the user.
  • the area that the second pressure loss body covers the first filter 45 can be adjusted in stages according to the amount of decrease in air volume.
  • the frequency of the compressor is increased and the refrigerant temperature in the evaporator is lowered to finally achieve ⁇ ai. be able to.
  • the air conditioner of the present disclosure can be used in spaces that require air conditioning.

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  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un climatiseur qui, lorsque la température de fluide frigorigène dans un évaporateur est supérieure au point de rosée intérieur et que la vitesse de rotation d'une soufflante intérieure est à la valeur minimale pendant une opération de déshumidification du climatiseur, est apte à abaisser la température de fluide frigorigène dans l'évaporateur par réduction de l'écoulement d'air par l'introduction d'un corps de réduction de pression entre l'entrée et la sortie du climatiseur.　Le climatiseur comprend : un échangeur de chaleur qui fonctionne comme un évaporateur ; un logement (21) dans lequel sont formées une entrée (21a) qui est destinée à aspirer de l'air et une sortie (21b) qui est destinée à souffler de l'air intérieur ayant été soumis à un échange de chaleur par l'échange de chaleur ; une soufflante intérieure (23) qui aspire l'air à partir de l'entrée (21a) et évacue, depuis la sortie (21b), l'air ayant été soumis à un échange de chaleur par l'échangeur de chaleur ; et un corps de réduction de pression qui réduit le flux d'air soufflé depuis la sortie (21b) pour être inférieur au flux d'air à la vitesse de rotation minimale de la soufflante intérieure (23).
PCT/JP2022/028739 2022-07-26 2022-07-26 Climatiseur WO2024023916A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2022/028739 WO2024023916A1 (fr) 2022-07-26 2022-07-26 Climatiseur

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Application Number Priority Date Filing Date Title
PCT/JP2022/028739 WO2024023916A1 (fr) 2022-07-26 2022-07-26 Climatiseur

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000179916A (ja) * 1998-12-14 2000-06-30 Matsushita Electric Ind Co Ltd 空気調和機の風向制御方法
JP2007132646A (ja) * 2005-10-11 2007-05-31 Fujitsu General Ltd 空気調和機
JP2009074704A (ja) * 2007-09-19 2009-04-09 Sharp Corp 空気調和機
JP2014153008A (ja) * 2013-02-12 2014-08-25 Sharp Corp 空気調和機
WO2019003511A1 (fr) * 2017-06-30 2019-01-03 パナソニックＩｐマネジメント株式会社 Climatiseur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000179916A (ja) * 1998-12-14 2000-06-30 Matsushita Electric Ind Co Ltd 空気調和機の風向制御方法
JP2007132646A (ja) * 2005-10-11 2007-05-31 Fujitsu General Ltd 空気調和機
JP2009074704A (ja) * 2007-09-19 2009-04-09 Sharp Corp 空気調和機
JP2014153008A (ja) * 2013-02-12 2014-08-25 Sharp Corp 空気調和機
WO2019003511A1 (fr) * 2017-06-30 2019-01-03 パナソニックＩｐマネジメント株式会社 Climatiseur

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