EP2631560B1 - Climatiseur - Google Patents

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Publication number
EP2631560B1
EP2631560B1 EP11834368.0A EP11834368A EP2631560B1 EP 2631560 B1 EP2631560 B1 EP 2631560B1 EP 11834368 A EP11834368 A EP 11834368A EP 2631560 B1 EP2631560 B1 EP 2631560B1
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EP
European Patent Office
Prior art keywords
indoor
heat exchanger
channel
refrigerant
radiation
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP11834368.0A
Other languages
German (de)
English (en)
Other versions
EP2631560A4 (fr
EP2631560A1 (fr
Inventor
Toshihiro Kizawa
Yuuki Fujioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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
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Publication of EP2631560A1 publication Critical patent/EP2631560A1/fr
Publication of EP2631560A4 publication Critical patent/EP2631560A4/fr
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Publication of EP2631560B1 publication Critical patent/EP2631560B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/005—Outdoor unit expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0213—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during heating

Definitions

  • the present invention relates to an air conditioner in which an indoor heat exchanger and a radiation panel are disposed in parallel.
  • an air conditioner one provided with an indoor unit having an indoor heat exchanger and a radiation panel, and an outdoor unit that supplies and circulates a refrigerant to the indoor heat exchanger and the radiation panel is known (e.g., PTL 1).
  • a refrigerant circuit of this air conditioner a channel provided with the indoor heat exchanger and a channel provided with the radiation panel are disposed in parallel, and an expansion valve (decompression structure) for adjusting the pressure in the refrigerant circuit is provided in each of these channels.
  • Patent Literature 2 (PTL 2) describes an air conditioner configured in such a manner that chattering does not occur during heating operation even if a refrigerant liquefied by a radiation heat exchanger stays in the radiation heat exchanger and in the vicinity of an on-off valve.
  • the air conditioner is provided with a first check valve located between a radiation heat exchanger and an on-off valve.
  • the on-off valve When the on-off valve is in a closed state, the amount of a liquid refrigerant present between the on-off valve and the first check valve is small, and, therefore, even if the liquid refrigerant evaporates naturally to increase the internal pressure, chattering is prevented from occurring because the pressure does not reach a level which is sufficient to open the on-off valve.
  • Patent Literature 2 discloses an air conditioner according to the preamble of claim 1.
  • Patent Literature 3 describes an air conditioner in which a refrigeration cycle causes at least a compressor and an outdoor heat exchanger, both of which are arranged outside a room to be air-conditioned, to communicate with an indoor heat exchanger and a radiant heat exchanger, both of which are arranged inside the room, and is operated in a heating operation mode.
  • a fan delivers air to at least the indoor heat exchanger, a sensor detects the temperature of the radiant heat exchanger and a controller controls the fan so as to control the radiant heat temperature from the radiant heat exchanger, through the indoor heat exchanger, in accordance with a temperature detection signal from the sensor.
  • controlling a discharge temperature of a compressor in the air conditioner requires controlling of two expansion valves provided in the two channels described above, and this made control complicated. Therefore, it has been difficult to perform proper control in a short time.
  • An air conditioner according to the present invention is set out in claim 1.
  • control e.g., control based on the discharge temperature of the compressor, or the like
  • control is made easier as compared with a case in which the decompression structure is provided in the first channel and the second channel.
  • the valve structure is provided in the second channel. Therefore, the flow rate of the refrigerant flowing in the radiation panel can be adjusted. Further, by closing the valve structure, it is possible to cause the refrigerant to flow not in the radiation panel, but only in the indoor heat exchanger.
  • valve structure is on the downstream side of the radiation panel in the second channel during the heating operation.
  • the valve structure is provided on the downstream side of the radiation panel, relative to the flowing direction of the refrigerant during the heating operation. It is therefore possible to lower the temperature of the refrigerant passing the valve structure as compared with a case of providing the valve structure on the upstream side of the radiation panel. It is therefore possible to improve the durability of the valve structure. Further, when the valve structure is closed to perform the cooling operation, it is possible to prevent a low-temperature refrigerant from flowing into the radiation panel. Therefore, dew condensation on the radiation panel is prevented.
  • An air conditioner according to an embodiment of the present invention is an air conditioner, wherein the outdoor unit has the compressor, the outdoor heat exchanger, and the decompression structure, and the indoor unit has the valve structure.
  • the decompression structure is provided in the outdoor unit. Therefore, sound accompanied by switching operation of the decompression structure is not sensible inside the room. In short, it is possible to prevent the noise when performing the switching operation of the decompression structure.
  • control e.g., control based on the discharge temperature of the compressor, or the like
  • control is made easier as compared with a case in which the decompression structure is provided in the first channel and the second channel.
  • the valve structure is provided in the second channel. Therefore, the flow rate of the refrigerant flowing in the radiation panel can be adjusted. Further, by closing the valve structure, it is possible to cause the refrigerant to flow not in the radiation panel, but only in the indoor heat exchanger.
  • the valve structure is provided on the downstream side of the radiation panel, relative to the flowing direction of the refrigerant during the heating operation. It is therefore possible to lower the temperature of the refrigerant passing the valve structure as compared with a case of providing the valve structure on the upstream side of the radiation panel. It is therefore possible to improve the durability of the valve structure. Further, when the valve structure is closed to perform the cooling operation, it is possible to prevent a low-temperature refrigerant from flowing into the radiation panel. Therefore, dew condensation on the radiation panel is prevented.
  • the decompression structure is provided in the outdoor unit. Therefore, sound accompanied by switching operation of the decompression structure is not sensible inside the room. In short, it is possible to prevent the noise when performing the switching operation of the decompression structure.
  • the air conditioner 1 of the embodiment includes an indoor unit 2 that is installed inside a room, an outdoor unit 3 that is installed outside the room, and a remote controller 4 (see Fig. 3 ).
  • the indoor unit 2 includes an indoor heat exchanger 20, an indoor fan 21 that is disposed near the indoor heat exchanger 20, a radiation panel 22, a valve structure which, according to the present invention, is an indoor motor-operated valve 23, and an indoor temperature sensor 24 that detects an indoor temperature.
  • the outdoor unit 3 includes a compressor 30 , a four-way valve 31, an outdoor heat exchanger 32, an outdoor fan 33 that is disposed near the outdoor heat exchanger 32, and an outdoor motor-operated valve (a decompression structure) 34 .
  • the indoor unit 2 and the outdoor unit 3 are connected to each other by a circular refrigerant circuit 10.
  • the refrigerant circuit 10 includes a principal channel 11, a first channel 12, and a second channel 13.
  • the outdoor motor-operated valve 34, the outdoor heat exchanger 32, and the compressor 30 are provided in this order in the principal channel 11.
  • the four-way valve 31 is provided in the principal channel 11, and one of a discharge side and an intake side of the compressor 30 is connected to the outdoor heat exchanger 32 by switching the four-way valve 31.
  • an accumulator 35 is provided between the intake side of the compressor 30 and the four-way valve 31, and a discharge temperature sensor 36 is provided between the discharge side of the compressor 30 and the four-way valve 31.
  • An outdoor heat exchanger temperature sensor 28 is attached to the outdoor heat exchanger 32.
  • An opening degree of the outdoor motor-operated valve 34 can be changed, and the outdoor motor-operated valve 34 serves as the decompression structure.
  • a branching section 11a is on a downstream side of the compressor 30, and a merging section 11b is on an upstream side of the outdoor motor-operated valve 34.
  • the first channel 12 and the second channel 13 are provided between the branching section 11a and the merging section 11b, and connected in parallel.
  • the indoor heat exchanger 20 is provided in the first channel 12, and the radiation panel 22 and the indoor motor-operated valve 23 are provided in the second channel 13 in the order from the side of the branching section 11a.
  • a channel between the branching section 11a and the merging section 11b, excluding the first channel 12 and the second channel 13 constitutes the principal channel in the refrigerant circuit 10.
  • the indoor heat exchanger 20 is provided so as to be opposed to the indoor fan 21 in the indoor unit 2, and the indoor heat exchanger 20 is disposed on a windward side of the indoor fan 21. Accordingly, in the indoor unit 2, air heated or cooled by heat exchange with the indoor heat exchanger 20 is blown into the room as warm air or cool air by the indoor fan 21, thereby performing warm-air heating or cooling.
  • An indoor heat exchanger temperature sensor 27 is provided in the indoor heat exchanger 20.
  • the radiation panel 22 is disposed on a surface of the indoor unit 2, and a pipe fitting in which the refrigerant flows is provided on a rear side of the radiation panel 22. Accordingly, in the indoor unit 2, heat of the refrigerant flowing in the pipe fitting of the radiation panel 22 is radiated into the room, thereby performing radiation heating.
  • a panel incoming temperature sensor 25 and a panel outgoing temperature sensor 26 are provided on both sides of the radiation panel 22 in the second channel 13, respectively.
  • the indoor motor-operated valve 23 is provided in order to adjust a flow rate of the refrigerant supplied to the radiation panel 22.
  • the indoor motor-operated valve 23 according to the present invention is on the downstream side of the radiation panel 22 in a refrigerant flowing direction during a radiation heating operation and a radiation breeze heating operation.
  • the air conditioner 1 of the embodiment can perform a cooling operation, a warm-air heating operation, the radiation heating operation, and the radiation breeze heating operation.
  • the cooling operation is an operation in which the cooling is performed by causing the refrigerant to flow not in the radiation panel 22 but in the indoor heat exchanger 20.
  • the warm-air heating operation is an operation in which the warm-air heating is performed by causing the refrigerant to flow not in the radiation panel 22 but in the indoor heat exchanger 20.
  • the radiation heating operation is an operation in which the radiation heating is performed by causing the refrigerant to flow in the radiation panel 22 while the warm-air heating is performed by causing the refrigerant to flow in the indoor heat exchanger 20.
  • the radiation breeze heating operation is an operation in which the radiation heating is performed by causing the refrigerant to flow in the radiation panel 22 while the warm-air heating is performed by a constant air quantity lower than an air quantity during the warm-air heating operation and radiation heating operation.
  • the indoor motor-operated valve 23 is closed, and the four-way valve 31 is switched to a state indicated by a broken line in Fig. 1 . Therefore, as indicated by a broken-line arrow in Fig. 1 , the high-temperature, high-pressure refrigerant discharged from the compressor 30 flows in the outdoor heat exchanger 32 through the four-way valve 31.
  • the refrigerant condensed by the outdoor heat exchanger 32 flows in the indoor heat exchanger 20 after being decompressed by the outdoor motor-operated valve 34.
  • the refrigerant vaporized in the indoor heat exchanger 20 flows in the compressor 30 through the four-way valve 31 and accumulator 35.
  • the indoor motor-operated valve 23 is closed, and the four-way valve 31 is switched to a state indicated by a solid line in Fig. 1 . Therefore, as indicated by a solid-line arrow in Fig. 1 , the high-temperature, high-pressure refrigerant discharged from the compressor 30 flows in the indoor heat exchanger 20 through the four-way valve 31.
  • the refrigerant condensed by the indoor heat exchanger 20 flows in the outdoor heat exchanger 32 after being decompressed by the outdoor motor-operated valve 34.
  • the refrigerant vaporized in the outdoor heat exchanger 32 flows in the compressor 30 through the four-way valve 31 and accumulator 35.
  • the indoor motor-operated valve 23 is opened, and the four-way valve 31 is switched to a state indicated by a solid line in Fig. 2 . Therefore, as indicated by a solid-line arrow in Fig. 2 , the high-temperature, high-pressure refrigerant discharged from the compressor 30 flows in the indoor heat exchanger 20 and radiation panel 22 through the four-way valve 31.
  • the refrigerant condensed by the indoor heat exchanger 20 and radiation panel 22 flows in the outdoor heat exchanger 32 after being decompressed by the outdoor motor-operated valve 34.
  • the refrigerant vaporized in the outdoor heat exchanger 32 flows in the compressor 30 through the four-way valve 31 and accumulator 35.
  • a user performs a manipulation of operation start/stop, a setting of an operation mode, a setting of a target temperature (an indoor setting temperature) of an indoor temperature, a setting of a blowing air quantity, and the like.
  • a target temperature an indoor setting temperature
  • a setting of a blowing air quantity and the like.
  • air quantity automatic or “strong” to "weak” can be selected as the air quantity setting.
  • the air quantity is automatically controlled.
  • a controller 5 that controls the air conditioner 1 will be described below with reference to Fig. 3 .
  • the controller 5 includes a storage (storage means) 50, an indoor motor-operated valve controller 52, an indoor fan controller 53, a compressor controller (control means) 54, and an outdoor motor-operated valve controller 55.
  • the operation settings include those, such as the target temperature (the indoor setting temperature) of the indoor temperature, which are set such that the user manipulates the remote controller 4 and those previously set to the air conditioner 1.
  • a target temperature range of the radiation panel 22 is previously set to a given temperature range (for example, 50 to 55°C).
  • the target temperature range of the radiation panel 22 may be set by the manipulation of the remote controller 4.
  • the indoor motor-operated valve controller 52 controls the opening degree of the indoor motor-operated valve 23. During the cooling operation or the warm-air heating operation, the indoor motor-operated valve controller 52 closes the indoor motor-operated valve 23. During the radiation heating operation or the radiation breeze heating operation, the indoor motor-operated valve controller 52 controls the opening degree of the indoor motor-operated valve 23 based on the temperature at the radiation panel 22.
  • the indoor motor-operated valve controller 52 calculates a surface temperature (a predicted value) at the radiation panel 22, and the indoor motor-operated valve controller 52 controls the opening degree of the indoor motor-operated valve 23 such that the predicted value (hereinafter simply referred to as a radiation panel temperature) of the surface temperature at the radiation panel 22 falls within the panel target temperature range (for example, 50 to 55°C).
  • the temperatures detected by both the panel incoming temperature sensor 25 and panel outgoing temperature sensor 26 are used to calculate the radiation panel temperature.
  • the temperatures detected only by the panel incoming temperature sensor 25 may be used or the temperatures detected only by the panel outgoing temperature sensor 26 may be used.
  • the indoor fan controller 53 controls a rotation speed of the indoor fan 21.
  • the indoor fan controller 53 controls the rotation speed of the indoor fan 21 based on the indoor temperature detected by the indoor temperature sensor 24 or the indoor setting temperature.
  • the indoor fan 21 is controlled at the rotation speed corresponding to a previously-set fan tap, in the case that "strong” to "weak” are set to the air quantity setting during the warm-air heating operation or cooling operation, or in the case of the radiation breeze heating operation.
  • the compressor controller 54 controls an operation frequency based on the indoor temperature, the indoor setting temperature, a heat exchanger temperature detected by the indoor heat exchanger temperature sensor 27, and the like.
  • the outdoor motor-operated valve controller 55 controls the opening degree of the outdoor motor-operated valve 34. Particularly, the outdoor motor-operated valve controller 55 controls the opening degree of the outdoor motor-operated valve 34 such that the temperature detected by the discharge temperature sensor 36 becomes an optimum temperature in the operation state. The optimum temperature is determined based on the temperature detected by the indoor heat exchanger temperature sensor 27, the temperature detected by the outdoor heat exchanger temperature sensor 28, and the like.
  • pressure in the refrigerant circuit 10 can be depressed only by controlling the decompression structure (outdoor motor-operated valve) 34 provided in the principal channel 11. Therefore, the control can easily be performed compared with the case that the decompression structure is provided in each of the first channel 12 and the second channel 13.
  • the indoor motor-operated valve 23 is provided in the second channel 13. Therefore, the flow rate of the refrigerant flowing in the radiation panel 22 can be adjusted. By closing the indoor motor-operated valve 23, the refrigerant flows not in the radiation panel 22 but only in the indoor heat exchanger 20.
  • the indoor motor-operated valve 23 is on the downstream side of the radiation panel 22 with respect to the refrigerant flowing direction during the radiation heating operation and radiation breeze heating operation. Accordingly, the temperature of the refrigerant passing through the indoor motor-operated valve 23 can be lowered compared with the case that the indoor motor-operated valve 23 is provided on the upstream side of the radiation panel 22. Therefore, durability of the indoor motor-operated valve 23 can be improved.
  • the flow of the low-temperature refrigerant in the radiation panel 22 can completely be blocked when the indoor motor-operated valve 23 is closed to perform the cooling operation, so that dew condensation of the radiation panel 22 can be prevented.
  • the outdoor motor-operated valve 34 is provided in the principal channel 11
  • the outdoor motor-operated valve 34 can be provided in the outdoor unit 3 without increasing the number of pipe fittings connecting the indoor unit 2 and the outdoor unit 3. For this reason, the user hardly hears the noise caused by the switching of the outdoor motor-operated valve 34. That is, the noise can be prevented in the room during the switching of the outdoor motor-operated valve 34.
  • the indoor motor-operated valve 23 is on the downstream side of the radiation panel 22 in the refrigerant flowing direction during the radiation heating operation and radiation breeze heating operation.
  • the air conditioner 1 can perform the warm-air heating operation in which the warm-air heating is performed by causing the refrigerant to flow not in the radiation panel 22 but in the indoor heat exchanger 20.
  • a check valve 129 may be provided between the radiation panel 22 and merging section 11b in a second channel 113 instead of providing the indoor motor-operated valve 23 in the second channel 13, while an indoor motor-operated valve 123 is provided in a first channel 112.
  • the check valve 129 causes the refrigerant to flow not toward the radiation panel 22 from the merging section 11b but only toward the merging section lib from the radiation panel 22.
  • the solid-line arrow in Fig. 4 indicates the flow of the refrigerant during the radiation heating operation or radiation breeze heating operation, and the broken- line arrow in Fig. 4 indicates the flow of the refrigerant during the cooling operation.
  • the flow rate of the refrigerant supplied to the indoor heat exchanger 20 can be adjusted by the indoor motor-operated valve 123. Additionally, when the indoor motor-operated valve 123 is closed, only the radiation heating can be performed by causing the refrigerant to flow not in the indoor heat exchanger 20 but in the radiation panel 22.
  • the check valve 129 can prevent the low-temperature refrigerant from flowing in the radiation panel 22.
  • the indoor motor-operated valve 123 is provided on the side of the merging section 11b of the indoor heat exchanger 20. Alternatively, the indoor motor-operated valve 123 may be provided on the side of the branching section 11a.
  • the use of the present invention can easily control the air conditioner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Human Computer Interaction (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Claims (2)

  1. Climatiseur (1), comprenant une unité en intérieur (2), une unité en extérieur (3) et un circuit de refroidissement (10) reliant l'unité en intérieur avec l'unité en extérieur,
    dans lequel l'unité en intérieur possède un échangeur de chaleur en intérieur (20) pourvu dans l'unité en intérieur de sorte à s'opposer à un ventilateur (21) et un panneau rayonnant (22) pourvu sur une surface de l'unité en intérieur,
    dans lequel le circuit de refroidissement comprend un canal principal (11) dans lequel une structure de décompression (34), un échangeur de chaleur en extérieur (32) et un compresseur (30) sont pourvus dans cet ordre ;
    un premier canal (12) pourvu de l'échangeur de chaleur en intérieur (20), qui relie une section de dérivation (11a) et une section de confluence (11b) qui se trouvent sur le côté aval et le côté amont du compresseur dans le canal principal, respectivement, pendant une opération de chauffage ; et
    un second canal (13) pourvu d'un panneau rayonnant (22), qui relie la section de dérivation et la section de confluence en parallèle avec le premier canal, pendant l'opération de chauffage, et
    dans lequel le second canal est pourvu d'une structure de vanne (23), qui est une vanne actionnée par moteur en intérieur, et
    dans lequel la structure de vanne se trouve sur le côté aval du panneau rayonnant dans le second canal pendant l'opération de chauffage.
  2. Climatiseur selon la revendication 1, dans lequel
    l'unité en extérieur possède le compresseur, l'échangeur de chaleur en extérieur et la structure de décompression, et l'unité en intérieur possède la structure de vanne.
EP11834368.0A 2010-10-20 2011-10-19 Climatiseur Active EP2631560B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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US20200282808A1 (en) * 2019-03-04 2020-09-10 Denso International America, Inc. Unidirectional Heat Exchanger
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CN110989717A (zh) * 2019-12-18 2020-04-10 山东大学 一种温度控制***调控时刻的决策方法及***
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ES2776986T3 (es) 2020-08-03
AU2011319038B2 (en) 2015-04-09
WO2012053529A1 (fr) 2012-04-26
JP5187373B2 (ja) 2013-04-24
AU2011319038A1 (en) 2013-05-23
CN103168205A (zh) 2013-06-19
CN103168205B (zh) 2016-02-24
EP2631560A1 (fr) 2013-08-28
JP2012087998A (ja) 2012-05-10

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