WO2013094638A1 - Dispositif de réfrigération - Google Patents

Dispositif de réfrigération Download PDF

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Publication number
WO2013094638A1
WO2013094638A1 PCT/JP2012/082912 JP2012082912W WO2013094638A1 WO 2013094638 A1 WO2013094638 A1 WO 2013094638A1 JP 2012082912 W JP2012082912 W JP 2012082912W WO 2013094638 A1 WO2013094638 A1 WO 2013094638A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
refrigerant
expansion mechanism
outdoor heat
compressor
Prior art date
Application number
PCT/JP2012/082912
Other languages
English (en)
Japanese (ja)
Inventor
瀬戸口　隆之
谷本　啓介
奥田　則之
隆宗 奥井
順一 下田
山田　剛
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to BR112014014557-1A priority Critical patent/BR112014014557B1/pt
Priority to US14/366,251 priority patent/US20140360223A1/en
Priority to CN201280062572.1A priority patent/CN103998875B/zh
Priority to KR1020147019771A priority patent/KR101452690B1/ko
Priority to AU2012354761A priority patent/AU2012354761B2/en
Priority to EP12859176.5A priority patent/EP2801770B1/fr
Priority to ES12859176T priority patent/ES2797450T3/es
Publication of WO2013094638A1 publication Critical patent/WO2013094638A1/fr

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Classifications

    • 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
    • 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
    • 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
    • F25B39/00—Evaporators; Condensers
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2313/031—Sensor arrangements
    • F25B2313/0314—Temperature sensors near the indoor heat exchanger
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators

Definitions

  • the present invention relates to a refrigeration apparatus, and more particularly to a refrigeration apparatus capable of performing a cooling operation and a heating operation.
  • the optimum refrigerant amount during cooling operation is different from the optimum refrigerant amount during heating operation (heating operation). For this reason, the volume of the outdoor heat exchanger that functions as a radiator during cooling operation is different from the volume of the indoor heat exchanger that functions as a radiator during heating operation.
  • the refrigerant that cannot be accommodated by the indoor heat exchanger during heating operation is stored in a refrigerant storage tank connected to the suction side of the compressor. Stored temporarily.
  • An object of the present invention is to provide a refrigeration apparatus capable of performing a cooling operation and a heating operation so that, when the volume of the outdoor heat exchanger is equal to or less than the volume of the indoor heat exchanger, it can accommodate surplus refrigerant generated during the cooling operation. There is to do.
  • the refrigerant flows in the order of the compressor, the outdoor heat exchanger, the expansion mechanism, and the indoor heat exchanger during the cooling operation, and the compressor, the indoor heat exchanger, the expansion mechanism, and the outdoor heat during the heating operation.
  • It is a refrigeration apparatus in which the refrigerant flows in the order of the exchanger.
  • the indoor heat exchanger is a cross fin heat exchanger
  • the outdoor heat exchanger is a stacked heat exchanger.
  • the expansion mechanism includes an upstream expansion mechanism that depressurizes the refrigerant, and a downstream expansion mechanism that depressurizes the refrigerant depressurized in the upstream expansion mechanism, and includes an upstream expansion mechanism and a downstream expansion mechanism.
  • a refrigerant storage tank for storing the refrigerant decompressed by the upstream expansion mechanism is provided therebetween.
  • the volume of the stacked heat exchanger is smaller than the volume of the cross fin type heat exchanger having the same heat exchange performance.
  • the capacity of the laminated outdoor heat exchanger is not only smaller than the volume of the cross fin type outdoor heat exchanger, but also the capacity of the cross fin type indoor heat exchanger connected thereto. Becomes smaller.
  • the capacity of the outdoor heat exchanger is smaller than the capacity of the indoor heat exchanger, so that surplus refrigerant is generated during the cooling operation. If such surplus refrigerant spreads excessively from the indoor heat exchanger having the gas phase portion to the suction side of the compressor, the refrigerant control may be hindered.
  • the refrigerant flows in the order of the compressor, the outdoor heat exchanger, the expansion mechanism, and the indoor heat exchanger during the cooling operation, and the compressor, the indoor heat exchanger, the expansion mechanism, and the outdoor heat during the heating operation.
  • It is a refrigeration apparatus in which the refrigerant flows in the order of the exchanger.
  • the volume of the outdoor heat exchanger is 100% or less of the volume of the indoor heat exchanger.
  • the expansion mechanism includes an upstream expansion mechanism that depressurizes the refrigerant, and a downstream expansion mechanism that depressurizes the refrigerant depressurized in the upstream expansion mechanism, and includes an upstream expansion mechanism and a downstream expansion mechanism.
  • a refrigerant storage tank for storing the refrigerant decompressed by the upstream expansion mechanism is provided therebetween.
  • the refrigerant in the refrigeration apparatus according to the first or second aspect, is R32.
  • R32 is used as the refrigerant in the refrigeration apparatus, the solubility of the refrigeration oil enclosed together with the refrigerant for lubricating the compressor tends to be very low under low temperature conditions. For this reason, when it becomes the low pressure in a refrigerating cycle, the solubility of refrigerating machine oil will fall large by the fall of refrigerant temperature.
  • an outdoor heat exchanger is used by using a stacked heat exchanger or the like as the outdoor heat exchanger.
  • the problem of oil return to the compressor that is caused by using R32 as the refrigerant can be solved.
  • a refrigeration apparatus is the refrigeration apparatus according to any one of the first to third aspects, wherein the outdoor heat exchanger is adjacent to a plurality of flat tubes arranged so as to be stacked at intervals. A laminated heat exchanger having fins sandwiched between flat tubes.
  • the capacity of the outdoor heat exchanger is equal to or less than the capacity of the indoor heat exchanger, so the amount of refrigerant in the refrigeration apparatus is reduced. .
  • surplus refrigerant is generated during the cooling operation. However, since this surplus refrigerant can be stored in the refrigerant storage tank, it is possible to prevent the refrigerant control from being hindered.
  • a refrigeration apparatus is the refrigeration apparatus according to any one of the first to third aspects, wherein a plurality of flat tubes in which outdoor heat exchangers are stacked so as to be stacked at intervals, and the flat tubes And a fin formed with a notch into which is inserted.
  • the capacity of the outdoor heat exchanger is equal to or less than the capacity of the indoor heat exchanger, so the amount of refrigerant in the refrigeration apparatus is reduced. .
  • surplus refrigerant is generated during the cooling operation. However, since this surplus refrigerant can be stored in the refrigerant storage tank, it is possible to prevent the refrigerant control from being hindered.
  • a refrigeration apparatus is the refrigeration apparatus according to any one of the first to third aspects, wherein the outdoor heat exchanger includes a flat tube formed in a meandering shape and a surface of the flat tube adjacent to each other. A stacked heat exchanger having fins sandwiched therebetween.
  • the refrigeration apparatus according to the seventh aspect is the refrigeration apparatus according to the second aspect, wherein the refrigerant is R32.
  • the refrigerant is R32.
  • R32 is used as the refrigerant in the refrigeration apparatus, the solubility of the refrigeration oil enclosed together with the refrigerant for lubricating the compressor tends to be very low under low temperature conditions. For this reason, when it becomes the low pressure in a refrigerating cycle, the solubility of refrigerating machine oil will fall large by the fall of refrigerant temperature.
  • a refrigeration apparatus is the refrigeration apparatus according to the second or seventh aspect, wherein the outdoor heat exchanger and the indoor heat exchanger are cross-fin heat exchangers, and the heat transfer of the outdoor heat exchanger
  • the tube diameter is set to be thinner than the heat transfer tube diameter of the indoor heat exchanger.
  • the capacity of the outdoor heat exchanger is equal to or less than the capacity of the indoor heat exchanger, so the amount of refrigerant in the refrigeration apparatus is reduced.
  • surplus refrigerant is generated during the cooling operation.
  • this surplus refrigerant can be stored in the refrigerant storage tank, it is possible to prevent the refrigerant control from being hindered.
  • the refrigeration apparatus is the refrigeration apparatus according to any one of the first to eighth aspects, wherein the bypass pipe for guiding the gas component of the refrigerant accumulated in the refrigerant storage tank to the compressor or the suction pipe of the compressor is provided. Furthermore, it is provided.
  • the refrigerant decompressed in the upstream side expansion mechanism is separated into the liquid component and the gas component in the refrigerant storage tank, and the gas component goes to the bypass pipe.
  • gas components that do not contribute to evaporation do not flow into the outdoor heat exchanger that functions as the refrigerant evaporator, and accordingly, the outdoor heat exchange that functions as the refrigerant evaporator accordingly.
  • the flow rate of the refrigerant flowing through the container can be reduced, and the decompression loss in the refrigeration cycle can be reduced.
  • a refrigeration apparatus is the refrigeration apparatus according to the ninth aspect, wherein the bypass pipe has a flow rate adjusting mechanism.
  • the operating frequency of the compressor is high, there is a possibility that the gas-liquid two-phase refrigerant returns from the refrigerant storage tank to the compressor or the suction pipe of the compressor through the bypass pipe and is sucked into the compressor.
  • the flow rate adjusting mechanism is provided in the bypass pipe, the liquid component of the gas-liquid two-phase refrigerant is decompressed and evaporated. Thereby, in this refrigeration apparatus, it is possible to prevent the liquid component from returning to the compressor or the suction pipe of the compressor.
  • the refrigerant that has passed through the flow rate adjusting mechanism evaporates in the outdoor heat exchanger and then merges with the refrigerant toward the compressor or the suction pipe of the compressor.
  • the flow rate adjusting mechanism is an electric expansion valve
  • the state of the refrigerant immediately before being sucked into the compressor can be adjusted more optimally by controlling the valve opening degree.
  • the circulation flow rate of the refrigerant, that is, the indoor heat according to the refrigeration load on the indoor heat exchanger side. The flow rate of the refrigerant flowing through the exchanger can be controlled.
  • the refrigerant storage tank is a gas-liquid separator.
  • the refrigerant storage tank composed of the gas-liquid separator has both a function of storing the liquid component and a function of separating the liquid component and the gas component.
  • FIG. 6 is a schematic cross-sectional view of a refrigerant storage tank in Modification 1.
  • FIG. It is an external appearance perspective view of the outdoor heat exchanger in the modification 2.
  • FIG. 1 is a schematic configuration diagram of an air conditioner 1 as a refrigeration apparatus according to an embodiment of the present invention.
  • the air conditioner 1 is a refrigeration apparatus capable of performing a cooling operation as a cooling operation and a heating operation as a heating operation by performing a vapor compression refrigeration cycle.
  • the air conditioner 1 is mainly configured by connecting an outdoor unit 2 and an indoor unit 4.
  • the outdoor unit 2 and the indoor unit 4 are connected via a liquid refrigerant communication tube 5 and a gas refrigerant communication tube 6. That is, the vapor compression refrigerant circuit 10 of the air conditioner 1 is configured by connecting the outdoor unit 2 and the indoor unit 4 via the refrigerant communication pipes 5 and 6.
  • the indoor unit 4 is installed indoors and constitutes a part of the refrigerant circuit 10.
  • the indoor unit 4 mainly has an indoor heat exchanger 41.
  • the indoor heat exchanger 41 is a heat exchanger that functions as a refrigerant evaporator during cooling operation to cool indoor air, and functions as a refrigerant radiator during heating operation to heat indoor air.
  • the liquid side of the indoor heat exchanger 41 is connected to the liquid refrigerant communication tube 5, and the gas side of the indoor heat exchanger 41 is connected to the gas refrigerant communication tube 6.
  • the indoor heat exchanger 41 is a cross fin heat exchanger, and mainly includes heat transfer fins 411 and heat transfer tubes 412.
  • FIG. 1 the indoor heat exchanger 41 is a cross fin heat exchanger, and mainly includes heat transfer fins 411 and heat transfer tubes 412.
  • the heat transfer fins 411 are thin aluminum flat plates, and the heat transfer fins 411 have a plurality of through holes.
  • the heat transfer tube 412 includes a straight tube 412a inserted into the through hole of the heat transfer fin 411, and U-shaped tubes 412b and 412c that connect ends of adjacent straight tubes 412a.
  • the straight pipe 412 a is brought into close contact with the heat transfer fin 411 by being expanded after being inserted into the through hole of the heat transfer fin 411.
  • the straight pipe 412a and the first U-shaped pipe 412b are integrally formed.
  • the second U-shaped pipe 412c is welded or brazed after the straight pipe 412a is inserted into the through-hole of the heat transfer fin 411 and expanded. Is connected to the end of the straight pipe 411a.
  • the indoor unit 4 also has an indoor fan 42 for supplying indoor air as supply air after sucking indoor air into the indoor unit 4 and exchanging heat with the refrigerant in the indoor heat exchanger 41.
  • an indoor fan 42 for supplying indoor air as supply air after sucking indoor air into the indoor unit 4 and exchanging heat with the refrigerant in the indoor heat exchanger 41.
  • the indoor unit 4 also has an indoor side control unit 44 that controls the operation of each part constituting the indoor unit 4.
  • the indoor side control unit 44 includes a microcomputer and a memory for controlling the indoor unit 4, and exchanges control signals and the like with a remote controller (not shown). Control signals and the like can be exchanged with the unit 2 via the transmission line 8a.
  • the outdoor unit 2 is installed outside and constitutes a part of the refrigerant circuit 10.
  • the outdoor unit 2 mainly includes a compressor 21, a switching mechanism 22, an outdoor heat exchanger 23, a first expansion mechanism 24, a refrigerant storage tank 25, a second expansion mechanism 26, and a liquid side closing valve 27. And a gas side closing valve 28.
  • the compressor 21 is a device that compresses the low-pressure refrigerant in the refrigeration cycle until the pressure becomes high.
  • the compressor 21 has a hermetic structure in which a rotary type or scroll type positive displacement compression element (not shown) is rotationally driven by a compressor motor 21a controlled by an inverter.
  • the compressor 21 has a suction pipe 31 connected to the suction side and a discharge pipe 32 connected to the discharge side.
  • the suction pipe 31 is a refrigerant pipe that connects the suction side of the compressor 21 and the first port 22 a of the switching mechanism 22.
  • the suction pipe 31 is provided with an accumulator 29.
  • the discharge pipe 32 is a refrigerant pipe that connects the discharge side of the compressor 21 and the second port 22 b of the switching mechanism 22.
  • the switching mechanism 22 is a mechanism for switching the direction of refrigerant flow in the refrigerant circuit 10.
  • the switching mechanism 22 causes the outdoor heat exchanger 23 to function as a radiator for the refrigerant compressed in the compressor 21, and the refrigerant evaporator that has radiated the indoor heat exchanger 41 in the outdoor heat exchanger 23. Switch to function as. That is, during the cooling operation, the switching mechanism 22 switches between the second port 22b and the third port 22c and the first port 22a and the fourth port 22d. Thereby, the discharge side (here, the discharge pipe 32) of the compressor 21 and the gas side (here, the first gas refrigerant pipe 33) of the outdoor heat exchanger 23 are connected (of the switching mechanism 22 of FIG. 1).
  • the suction side (here, the suction pipe 31) of the compressor 21 and the gas refrigerant communication pipe 6 side (here, the second gas refrigerant pipe 34) are connected (see the solid line of the switching mechanism 22 in FIG. 1). ).
  • the switching mechanism 22 causes the outdoor heat exchanger 23 to function as an evaporator of the refrigerant that has dissipated heat in the indoor heat exchanger 41 during the heating operation, and the indoor heat exchanger 41 is used for the refrigerant compressed in the compressor 21. Switch to function as a radiator. That is, during the heating operation, the switching mechanism 22 switches the second port 22b and the fourth port 22d to communicate and the first port 22a and the third port 22c to communicate.
  • the discharge side (here, the discharge pipe 32) of the compressor 21 and the gas refrigerant communication pipe 6 side (here, the second gas refrigerant pipe 34) are connected (the broken line of the switching mechanism 22 in FIG. 1). reference).
  • the suction side (here, the suction pipe 31) of the compressor 21 and the gas side (here, the first gas refrigerant pipe 33) of the outdoor heat exchanger 23 are connected (broken line of the switching mechanism 22 in FIG. 1). See).
  • the first gas refrigerant pipe 33 is a refrigerant pipe that connects the third port 22 c of the switching mechanism 22 and the gas side of the outdoor heat exchanger 23.
  • the second gas refrigerant pipe 33 is a refrigerant pipe that connects the fourth port 22d of the switching mechanism 22 and the gas refrigerant communication pipe 6 side.
  • the switching mechanism 22 is a four-way switching valve.
  • the outdoor heat exchanger 23 is a heat exchanger that functions as a refrigerant radiator that uses outdoor air as a cooling source during cooling operation, and functions as a refrigerant evaporator that uses outdoor air as a heating source during heating operation.
  • the outdoor heat exchanger 23 has a liquid side connected to the liquid refrigerant pipe 35 and a gas side connected to the first gas refrigerant pipe 33.
  • the liquid refrigerant pipe 35 is a refrigerant pipe that connects the liquid side of the outdoor heat exchanger 23 and the liquid refrigerant communication pipe 7 side. As shown in FIG.
  • the outdoor heat exchanger 23 is a stacked heat exchanger, and mainly includes a flat tube 231, a corrugated fin 232, and headers 233 a and 233 b.
  • FIG. 3 is an external perspective view of the outdoor heat exchanger 23.
  • the flat tube 231 is formed of aluminum or an aluminum alloy, and has a flat portion 231a serving as a heat transfer surface and a plurality of internal flow paths (not shown) through which a refrigerant flows.
  • the flat tubes 231 are arranged in a plurality of stages so as to be stacked with an interval (ventilation space) in a state where the flat portion 231a is directed upward and downward.
  • the corrugated fins 232 are aluminum or aluminum alloy fins bent into a corrugated shape.
  • the corrugated fins 232 are arranged in a ventilation space sandwiched between upper and lower flat tubes 231, and a valley portion and a mountain portion are in contact with a flat portion 231 a of the flat tube 231.
  • the trough part, the peak part, and the plane part 231a are joined by brazing or the like.
  • the headers 233a and 233b are connected to both ends of the flat tubes 231 arranged in a plurality of stages in the vertical direction.
  • the headers 233 a and 233 b have a function of supporting the flat tube 231, a function of guiding the refrigerant to the internal flow path of the flat tube 231, and a function of collecting the refrigerant that has come out of the internal flow path.
  • the refrigerant flowing from the first inlet / outlet 234 of the first header 233a is distributed almost evenly to each internal flow path of the uppermost flat tube 231; It flows toward the second header 233b.
  • the refrigerant that has reached the second header 233b is evenly distributed to each internal flow path of the second-stage flat tube 231 and flows toward the first header 233a.
  • the refrigerant in the odd-numbered flat tubes 231 flows toward the second header 233b, and the refrigerant in the even-numbered flat tubes 231 flows toward the first header 233a.
  • the refrigerant in the flat tube 231 at the lowest level and the even number level flows toward the first header 233a, collects at the first header 233a, and flows out from the second inlet / outlet 235 of the first header 233a.
  • the outdoor heat exchanger 23 functions as a refrigerant evaporator
  • the refrigerant flows in from the second inlet / outlet 235 of the first header 233a, and the flat tubes 231 and 231 in the opposite direction to the function as a refrigerant radiator. After flowing through the headers 233a and 233b, it flows out from the first entrance / exit 234 of the first header 233a.
  • the refrigerant flowing in the flat tube 231 radiates heat to the airflow flowing in the ventilation space via the corrugated fins 232. Further, when the outdoor heat exchanger 23 functions as a refrigerant evaporator, the refrigerant flowing through the flat tube 231 absorbs heat from the air flow flowing through the ventilation space via the corrugated fins 232.
  • the capacity of the outdoor heat exchanger 23 is smaller than the capacity of the indoor heat exchanger 41 by using the laminated heat exchanger as described above as the outdoor heat exchanger 23. This point will be described with reference to FIG. 4 using a packaged air conditioner as an example.
  • FIG. 4 using a packaged air conditioner as an example.
  • FIG. 4 is a graph showing the outdoor heat exchanger volume / indoor heat exchanger volume ratio by capacity.
  • ⁇ is a normal type of packaged air conditioner (cross fin type outdoor heat exchanger)
  • ⁇ is an outdoor heat exchanger of package air conditioner small diameter type (stacked type outdoor heat exchanger)
  • ⁇ is a normal type of room air conditioner ( Cross fin type outdoor heat exchanger)
  • ⁇ indicates outdoor heat exchanger small diameter type (stacked type outdoor heat exchanger) of room air conditioner.
  • the capacity of the laminated heat exchanger is not only smaller than the volume of the cross fin type outdoor heat exchanger, but also smaller than the capacity of the cross fin type indoor heat exchanger 41 connected thereto. Is meant to be.
  • the air conditioning apparatus surplus refrigerant is generated during the cooling operation. Therefore, in the air conditioner 1, the surplus refrigerant is accommodated in the refrigerant storage tank 25.
  • the refrigerant storage tank 25 that stores excess refrigerant. Even when the exchanger capacity / indoor heat exchanger volume ratio is 1.0, the use of the refrigerant storage tank 25 enables stable refrigerant control.
  • the first expansion mechanism 24 is a device that functions as an upstream expansion mechanism that reduces the refrigerant radiated in the outdoor heat exchanger 23 to an intermediate pressure in the refrigeration cycle during the cooling operation.
  • the second expansion mechanism 26 serving as an upstream expansion mechanism is a device that functions as a downstream expansion mechanism that depressurizes the refrigerant temporarily stored in the refrigerant storage tank 25 to a low pressure in the refrigeration cycle.
  • the first expansion mechanism 24 is provided in a portion of the liquid refrigerant pipe 35 near the outdoor heat exchanger 23.
  • an electric expansion valve is used as the first expansion mechanism 24.
  • the second expansion mechanism 26 is a downstream expansion that depressurizes the refrigerant temporarily stored in the refrigerant storage tank 25 after being depressurized in the first expansion mechanism 24 as an upstream expansion mechanism to a low pressure in the refrigeration cycle. It is a device that functions as a mechanism.
  • the second expansion mechanism 26 is a device that functions as an upstream expansion mechanism that reduces the refrigerant that has radiated heat in the indoor heat exchanger 41 to an intermediate pressure in the refrigeration cycle during heating operation.
  • the second expansion mechanism 26 is provided in a portion of the liquid refrigerant pipe 35 near the liquid side closing valve 27. Here, an electric expansion valve is used as the second expansion mechanism 26.
  • the refrigerant storage tank 25 is provided between the first expansion mechanism 24 and the second expansion mechanism 26, and the refrigerant depressurized by the first expansion mechanism 24 or the second expansion mechanism 26 that functions as an upstream expansion mechanism. It is a container that can be stored as surplus refrigerant. For example, the amount of liquid refrigerant that can be accommodated in the indoor heat exchanger 41 during the heating operation in which the indoor heat exchanger 41 functions as a refrigerant radiator is 1100 cc, and the outdoor heat exchanger 23 functions as a refrigerant radiator.
  • the refrigerant storage tank 25 When the amount of liquid refrigerant that can be accommodated in the outdoor heat exchanger 23 during the cooling operation is 800 cc, the remaining 300 cc of liquid refrigerant that cannot be accommodated in the outdoor heat exchanger 23 during the cooling operation is stored in the refrigerant storage tank 25. Temporarily accommodated. Further, for example, the refrigerant immediately before entering the refrigerant storage tank 25 includes a gas component generated when the pressure is reduced in the first expansion mechanism 24 or the second expansion mechanism 26 that functions as the upstream expansion mechanism. For this reason, after this refrigerant enters the refrigerant storage tank 25, it is separated into a liquid component and a gas component, the liquid refrigerant is stored on the lower side, and the gas refrigerant is stored on the upper side.
  • the gas refrigerant separated in the refrigerant storage tank 25 flows through the bypass pipe 30 to the suction pipe 31 of the compressor 21.
  • the liquid refrigerant separated in the refrigerant storage tank 25 flows to the outdoor heat exchanger 23 after being depressurized in the second expansion mechanism 26 or the first expansion mechanism 24 that functions as an upstream side expansion mechanism.
  • the bypass pipe 30 is provided so as to connect between the upper part of the refrigerant storage tank 25 and the middle part of the suction pipe 31.
  • a flow rate adjusting mechanism 30a is provided in the middle of the bypass pipe 30, a flow rate adjusting mechanism 30a is provided.
  • an electric expansion valve is used as the flow rate adjusting mechanism 30a.
  • the outlet of the bypass pipe 30 may be directly connected to the compressor 21 instead of being connected to the middle part of the suction pipe 31.
  • the liquid side shut-off valve 27 and the gas side shut-off valve 28 are valves provided at connection ports with external devices and pipes (specifically, the liquid refrigerant communication pipe 5 and the gas refrigerant communication pipe 6).
  • the liquid side closing valve 26 is provided at the end of the liquid refrigerant pipe 35.
  • the gas side closing valve 27 is provided at the end of the second gas refrigerant pipe 34.
  • the outdoor unit 2 has an outdoor fan 36 for sucking outdoor air into the outdoor unit 2, exchanging heat with the refrigerant in the outdoor heat exchanger 23, and then discharging the air to the outside.
  • a propeller fan or the like driven by an outdoor fan motor 37 is used as the outdoor fan 36.
  • the outdoor unit 2 also has an outdoor control unit 38 that controls the operation of each unit constituting the outdoor unit 2.
  • the outdoor side control part 38 has a microcomputer, memory, etc. for controlling the outdoor unit 2, and controls signal between the indoor side control parts 43 of the indoor unit 4 via the transmission line 8a. Etc. can be exchanged. That is, the control part 8 which performs operation control of the whole air conditioning apparatus 1 is comprised by the transmission line 8a which connects between the indoor side control part 44, the outdoor side control part 38, and the control parts 38 and 44.
  • the control unit 8 can control the operation of various devices and valves 21a, 22, 24, 26, 30a, 37, 43, and the like based on various operation settings, detection values of various sensors, and the like. .
  • Refrigerant communication pipes 5 and 6 are refrigerant pipes constructed on site when the air conditioner 1 is installed at an installation location such as a building, and installation conditions such as an installation location and a combination of an outdoor unit and an indoor unit. Those having various lengths and tube diameters are used.
  • the refrigerant circuit 10 of the air conditioner 1 is configured by connecting the outdoor unit 2, the indoor unit 4, and the refrigerant communication pipes 5 and 6.
  • the refrigerant circuit 10 includes the compressor 21, the outdoor heat exchanger 23, the first expansion mechanism 24 as the upstream expansion mechanism, the refrigerant storage tank 25, and the second expansion mechanism as the downstream expansion mechanism.
  • the refrigerant circuit 10 also includes the compressor 21, the indoor heat exchanger 41, the second expansion mechanism 26 as the upstream expansion mechanism, the refrigerant storage tank 25, and the first expansion mechanism as the downstream expansion mechanism during the heating operation as the heating operation.
  • a refrigeration cycle in which refrigerant flows in the order of the expansion mechanism 24 and the outdoor heat exchanger 23 is performed.
  • the air conditioner 1 can perform various operations such as a cooling operation and a heating operation by the control unit 8 including the indoor side control unit 44 and the outdoor side control unit 38.
  • the air conditioner 1 can perform a cooling operation and a heating operation as described above.
  • cooling operation of the air conditioning apparatus 1 and heating operation is demonstrated.
  • the switching mechanism 22 is switched to the state indicated by the broken line in FIG. 1, that is, the communication between the second port 22b and the fourth port 22d and the communication between the first port 22a and the third port 22c. Do.
  • the low-pressure refrigerant in the refrigeration cycle is sucked into the compressor 21, compressed until it reaches a high pressure, and then discharged.
  • the high-pressure refrigerant discharged from the compressor 21 is sent to the indoor heat exchanger 41 through the switching mechanism 22, the gas side closing valve 28 and the gas refrigerant communication pipe 6.
  • the high-pressure refrigerant sent to the indoor heat exchanger 41 radiates heat by exchanging heat with indoor air in the indoor heat exchanger 41. Thereby, indoor air is heated.
  • capacitance of the indoor heat exchanger 41 is larger than the capacity
  • most liquid refrigerants are accommodated in the indoor heat exchanger 41 at the time of heating operation.
  • the high-pressure refrigerant radiated by the indoor heat exchanger 41 is sent to the second expansion mechanism 26 that functions as an upstream expansion mechanism through the liquid refrigerant communication tube 5 and the liquid-side closing valve 27.
  • the refrigerant sent to the second expansion mechanism 26 is depressurized to an intermediate pressure by the second expansion mechanism 26 and then sent to the refrigerant storage tank 25.
  • the refrigerant immediately before entering the refrigerant storage tank 25 contains a gas component generated when the pressure is reduced in the second expansion mechanism 26, but after entering the refrigerant storage tank 25, the liquid component and the gas component are separated.
  • the liquid refrigerant is stored on the lower side, and the gas refrigerant is stored on the upper side.
  • the flow rate adjustment mechanism 30 a of the bypass pipe 30 is controlled to be in the open state, the gas refrigerant in the refrigerant storage tank 25 goes to the suction pipe 31 of the compressor 21 through the bypass pipe 30.
  • the liquid refrigerant in the refrigerant storage tank 25 is sent to the outdoor heat exchanger 23 after being decompressed to a low pressure by the first expansion mechanism 24 as a downstream expansion mechanism.
  • the low-pressure refrigerant sent to the outdoor heat exchanger 23 evaporates by exchanging heat with outdoor air supplied by the outdoor fan 36 in the outdoor heat exchanger 23. At this time, the refrigerant flowing into the outdoor heat exchanger 23 is reduced by the gas-liquid separation operation in the refrigerant storage tank 25 and the operation of sucking the gas refrigerant separated into the compressor 21 through the bypass pipe 30. . For this reason, since the flow volume of the refrigerant
  • the switching mechanism 22 is in a state indicated by a solid line in FIG. 1, that is, switching between the second port 22b and the third port 22c and the first port 22a and the fourth port 22d. Do.
  • the low-pressure refrigerant in the refrigeration cycle is sucked into the compressor 21, compressed until it reaches a high pressure, and then discharged.
  • the high-pressure refrigerant discharged from the compressor 21 is sent to the outdoor heat exchanger 23 through the switching mechanism 22.
  • the high-pressure refrigerant sent to the outdoor heat exchanger 23 radiates heat by exchanging heat with outdoor air in the outdoor heat exchanger 23.
  • the high-pressure refrigerant that has dissipated heat in the outdoor heat exchanger 23 is sent to the first expansion mechanism 24 that functions as the upstream expansion mechanism, and is reduced to the intermediate pressure by the first expansion mechanism 24, and then sent to the refrigerant storage tank 25. It is done.
  • the outdoor heat exchanger 23 cannot accommodate all the liquid refrigerants at the time of air_conditionaing
  • the refrigerant immediately before entering the refrigerant storage tank 25 includes a gas component generated when the pressure is reduced in the first expansion mechanism 24. However, after entering the refrigerant storage tank 25, the refrigerant is separated into a liquid component and a gas component.
  • the liquid refrigerant is stored on the lower side, and the gas refrigerant is stored on the upper side.
  • the flow rate adjustment mechanism 30 a of the bypass pipe 30 is controlled to be in the open state, the gas refrigerant in the refrigerant storage tank 25 goes to the suction pipe 31 of the compressor 21 through the bypass pipe 30.
  • the liquid refrigerant in the refrigerant storage tank 25 is depressurized to a low pressure by the second expansion mechanism 26 that functions as a downstream expansion mechanism, and then sent to the indoor heat exchanger 41 through the liquid side closing valve 27 and the liquid refrigerant communication pipe 5. .
  • the low-pressure refrigerant sent to the indoor heat exchanger 41 evaporates by exchanging heat with indoor air in the indoor heat exchanger 41. Thereby, indoor air is cooled. At this time, the refrigerant flowing into the indoor heat exchanger 41 is reduced by the gas-liquid separation operation in the refrigerant storage tank 25 and the operation of sucking the gas refrigerant separated into the compressor 21 through the bypass pipe 30. . For this reason, since the flow volume of the refrigerant
  • the low-pressure refrigerant evaporated in the indoor heat exchanger 51 is again sucked into the compressor 21 through the gas refrigerant communication pipe 6, the gas side shut-off valve 28, and the switching mechanism 22.
  • the air conditioner 1 of the present embodiment has the following features.
  • the indoor heat exchanger 41 is a cross fin heat exchanger
  • the outdoor heat exchanger 23 is a stacked heat exchanger
  • the volume of the outdoor heat exchanger 23 is the indoor heat exchange.
  • the volume of the container 41 is 100% or less.
  • a refrigerant storage tank 25 for storing the refrigerant decompressed by the upstream side expansion mechanism is provided between the other of the two.
  • the surplus refrigerant that cannot be accommodated in the outdoor heat exchanger 23 during the cooling operation is accommodated in the refrigerant storage tank 25 located in the vicinity of the downstream side of the outdoor heat exchanger 23.
  • the bypass pipe 30 is provided as described above.
  • the bypass pipe 30 guides the gas component of the refrigerant stored in the refrigerant storage tank 25 to the compressor 21 or the suction pipe 31 of the compressor 21.
  • the refrigerant decompressed in one of the first expansion mechanism 24 and the second expansion mechanism 26 as the upstream expansion mechanism is separated into a liquid component and a gas component in the refrigerant storage tank 25, and the gas component is It goes to the bypass pipe 30.
  • the refrigerant that has passed through the flow rate adjustment mechanism 30 a evaporates in the indoor heat exchanger 41 and the outdoor heat exchanger 23, and then enters the compressor 21 or the suction pipe 31 of the compressor 21. It will be merged with the refrigerant.
  • the flow rate adjustment mechanism 30a is an electric expansion valve, the refrigerant state immediately before being sucked into the compressor 21 can be adjusted more optimally by controlling the valve opening degree.
  • the flow rate of the refrigerant returning to the compressor 21 can be increased or decreased by controlling the valve opening degree of the flow rate adjusting mechanism 30a, the circulation flow rate of the refrigerant according to the refrigeration load on the indoor heat exchanger 41 side, that is, The flow rate of the refrigerant flowing through the indoor heat exchanger 41 can be controlled.
  • a container for storing the refrigerant is used as the refrigerant storage tank 25.
  • the present invention is not limited to this.
  • a cyclone type gas-liquid separator as shown in FIG.
  • the refrigerant storage tank 25 of this modification mainly includes a cylindrical container 251, a first connection pipe 252, a second connection pipe 253, and a third connection pipe 254.
  • the first connecting pipe 252 is connected in the tangential direction of the circumferential side wall of the cylindrical container 251, and communicates the inside of the cylindrical container 251 with the second expansion mechanism 26 or the first expansion mechanism 24 as a downstream side expansion mechanism. ing.
  • the second connection pipe 253 is connected to the bottom wall of the cylindrical container 251 and communicates the inside of the cylindrical container 251 with the first expansion mechanism 24 or the second expansion mechanism 26 as the upstream expansion mechanism.
  • the third connection pipe 254 is connected to the upper wall of the cylindrical container 251 and connects the inside of the cylindrical container 251 and the bypass pipe 30.
  • the intermediate-pressure refrigerant flowing into the cylindrical container 251 through the first connection pipe 252 flows in a vortex along the inner peripheral surface 251a of the circumferential side wall of the cylindrical container 251, Liquid refrigerant adheres to the inner peripheral surface 251a, and the liquid refrigerant and the gas refrigerant are efficiently separated.
  • the liquid refrigerant descends due to gravity, accumulates on the lower side, and flows out from the cylindrical container 251 through the second connection pipe 253.
  • the gas refrigerant rises while turning, accumulates on the upper side, and flows out of the cylindrical container 251 through the third connection pipe 254.
  • the refrigerant storage tank 25 composed of a gas-liquid separator has both a refrigerant storage function for storing liquid refrigerant and a function for separating the liquid component and the gas component. This eliminates the need for a device and contributes to the simplification of the device configuration.
  • the outdoor heat exchanger 23 has illustrated the laminated heat exchanger which has the some flat tube 231 and the corrugated fin 232.
  • the outdoor heat exchanger 23 is arranged such that a plurality of flat tubes 231 are stacked at intervals, and corrugated fins 232 are sandwiched between adjacent flat tubes 231.
  • the outdoor heat exchanger 23 is not limited to the configuration in the above-described embodiment and the first modification.
  • a stacked heat exchanger having a flat tube 231 and a fin 236 formed with a notch 236a into which the flat tube 231 is inserted may be used. Even in this case, the same effects as those of the above-described embodiment and Modification 1 can be obtained.
  • the outdoor heat exchanger 23 has illustrated the laminated heat exchanger which has the some flat tube 231 and the corrugated fin 232.
  • the outdoor heat exchanger 23 is arranged such that a plurality of flat tubes 231 are stacked at intervals, and corrugated fins 232 are sandwiched between adjacent flat tubes 231.
  • the outdoor heat exchanger 23 is not limited to the configuration in the above embodiment and the first modification.
  • the flat tube is formed in a meandering shape, and the fins are sandwiched between adjacent surfaces of the flat tube. It may be a configuration. Even in this case, the same effects as those of the above embodiment and the first and second modifications can be obtained.
  • the outdoor heat exchanger 23 is a stacked heat exchanger having a plurality of flat tubes 231 and fins 236 formed with corrugated fins 232 and notches 236a. It is not limited to this.
  • both the outdoor heat exchanger 23 and the indoor heat exchanger 41 are cross-fin heat exchangers, and the outdoor heat exchanger 23
  • the heat transfer tube diameter may be narrower than the heat transfer tube diameter of the indoor heat exchanger 41. Even in this case, the same effects as those of the above-described embodiment and Modifications 1 to 3 can be obtained.
  • the circuit portion from after passing through the first expansion mechanism 24 functioning as the downstream expansion mechanism until being sucked into the compressor 21 through the outdoor heat exchanger 23 becomes a low pressure in the refrigeration cycle.
  • coolant the ether type synthetic oil which has some compatibility with R32, the mineral oil which is incompatible with R32, an alkylbenzene type synthetic oil, etc. can be considered.
  • the ether synthetic oil loses the compatibility when the temperature is lowered to about ⁇ 5 ° C., and the mineral oil and the alkylbenzene synthetic oil are not compatible even at a higher temperature than the ether synthetic oil.
  • the first and second expansion mechanisms 24 and 26 as the upstream expansion mechanism and the downstream expansion mechanism are provided. Since the refrigerant storage tank 25 is provided in the compressor 21, compared with the case where the refrigerant storage tank is provided on the suction side of the compressor 21, two-layer separation on the suction side of the compressor 21 is less likely to occur. It is easy to return. As described above, in the refrigeration apparatus 1 according to the present modification, the outdoor heat exchanger 23 is provided by providing the refrigerant storage tank 25 between the first and second expansion mechanisms 24 and 26 as the upstream expansion mechanism and the downstream expansion mechanism.
  • the present invention is widely applicable to a refrigeration apparatus capable of performing a cooling operation and a heating operation.
  • Air conditioning equipment (refrigeration equipment) DESCRIPTION OF SYMBOLS 21 Compressor 23 Outdoor heat exchanger 24, 26 Expansion mechanism 25 Refrigerant storage tank 30 Bypass pipe 30a Flow rate adjustment mechanism 41 Indoor heat exchanger

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

L'invention porte sur un dispositif de réfrigération. Dans un climatiseur (1), pendant le refroidissement, un fluide frigorigène circule à travers un compresseur (21), un échangeur de chaleur extérieur (23), des mécanismes de détente (24, 26) et un échangeur de chaleur intérieur (41), dans cet ordre et, pendant le chauffage, le fluide frigorigène circule à travers le compresseur (21), l'échangeur de chaleur intérieur (41), les mécanismes de détente (26, 24) et l'échangeur de chaleur extérieur (23), dans cet ordre. L'échangeur de chaleur intérieur (41) est un échangeur de chaleur du type à ailettes transversales et l'échangeur de chaleur extérieur (23) est un échangeur de chaleur du type stratifié. Les mécanismes de détente (24, 26) ont un mécanisme de détente côté amont qui détend le fluide frigorigène et un mécanisme de détente côté aval qui détend le fluide frigorigène qui a été détendu par le mécanisme de détente côté amont. Un réservoir de stockage de fluide frigorigène (25) servant à stocker le fluide frigorigène qui a été détendu par le mécanisme de détente côté amont est agencé entre le mécanisme de détente côté amont et le mécanisme de détente côté aval.
PCT/JP2012/082912 2011-12-20 2012-12-19 Dispositif de réfrigération WO2013094638A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BR112014014557-1A BR112014014557B1 (pt) 2011-12-20 2012-12-19 Aparelho de refrigeração
US14/366,251 US20140360223A1 (en) 2011-12-20 2012-12-19 Refrigeration apparatus
CN201280062572.1A CN103998875B (zh) 2011-12-20 2012-12-19 制冷装置
KR1020147019771A KR101452690B1 (ko) 2011-12-20 2012-12-19 냉동 장치
AU2012354761A AU2012354761B2 (en) 2011-12-20 2012-12-19 Refrigeration apparatus
EP12859176.5A EP2801770B1 (fr) 2011-12-20 2012-12-19 Dispositif de réfrigération
ES12859176T ES2797450T3 (es) 2011-12-20 2012-12-19 Dispositivo de refrigeración

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JP2011-278427 2011-12-20
JP2011278427 2011-12-20
JP2012074660A JP5403095B2 (ja) 2011-12-20 2012-03-28 冷凍装置
JP2012-074660 2012-03-28

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WO2013094638A1 true WO2013094638A1 (fr) 2013-06-27

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EP (1) EP2801770B1 (fr)
JP (1) JP5403095B2 (fr)
KR (1) KR101452690B1 (fr)
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AU (1) AU2012354761B2 (fr)
BR (1) BR112014014557B1 (fr)
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JP5858022B2 (ja) * 2013-10-24 2016-02-10 ダイキン工業株式会社 空気調和装置
CN105940276A (zh) * 2014-01-23 2016-09-14 三菱电机株式会社 热泵装置
JP6865846B2 (ja) * 2017-10-10 2021-04-28 三菱電機株式会社 空気調和装置
US11280529B2 (en) * 2019-06-10 2022-03-22 Trane International Inc. Refrigerant volume control
JP2021055958A (ja) * 2019-09-30 2021-04-08 ダイキン工業株式会社 冷凍装置
JP6828790B1 (ja) * 2019-10-31 2021-02-10 ダイキン工業株式会社 冷凍装置
JP7372556B2 (ja) * 2021-09-30 2023-11-01 ダイキン工業株式会社 冷媒容器および冷凍サイクル装置

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CN103998875B (zh) 2015-09-02
EP2801770B1 (fr) 2020-04-01
JP2013148328A (ja) 2013-08-01
ES2797450T3 (es) 2020-12-02
AU2012354761A1 (en) 2014-08-07
KR101452690B1 (ko) 2014-10-22
KR20140102313A (ko) 2014-08-21
AU2012354761B2 (en) 2015-10-29
EP2801770A1 (fr) 2014-11-12
JP5403095B2 (ja) 2014-01-29
BR112014014557B1 (pt) 2022-01-11
EP2801770A4 (fr) 2015-09-16
US20140360223A1 (en) 2014-12-11
CN103998875A (zh) 2014-08-20
BR112014014557A2 (pt) 2017-06-13

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