WO2012098582A1 - Appareil à cycle de réfrigération - Google Patents

Appareil à cycle de réfrigération Download PDF

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Publication number
WO2012098582A1
WO2012098582A1 PCT/JP2011/000283 JP2011000283W WO2012098582A1 WO 2012098582 A1 WO2012098582 A1 WO 2012098582A1 JP 2011000283 W JP2011000283 W JP 2011000283W WO 2012098582 A1 WO2012098582 A1 WO 2012098582A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
heat exchanger
gas
refrigeration cycle
cycle apparatus
Prior art date
Application number
PCT/JP2011/000283
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English (en)
Japanese (ja)
Inventor
嶋本　大祐
森本　修
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 EP11855961.6A priority Critical patent/EP2667120B1/fr
Priority to PCT/JP2011/000283 priority patent/WO2012098582A1/fr
Priority to JP2012553460A priority patent/JP5762441B2/ja
Priority to EP14198981.4A priority patent/EP2905562B1/fr
Publication of WO2012098582A1 publication Critical patent/WO2012098582A1/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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • 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
    • F25B43/003—Filters
    • 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
    • F25B43/006—Accumulators
    • 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
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • 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
    • F25B2400/18—Refrigerant conversion
    • 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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • an extended piping portion of a refrigeration cycle apparatus that uses mineral oil such as that used in CFC refrigerant or HCFC refrigerant as refrigeration oil is reused in a refrigeration cycle apparatus that uses another refrigerant such as an HFC refrigerant system.
  • the present invention relates to a refrigeration cycle apparatus provided with a means capable of physically washing foreign matter centered on mineral oil and mineral oil remaining in the extension pipe portion with a refrigerant.
  • the following are known as conventional extension pipe cleaning techniques. Remove the air conditioner that needs to be replaced and the use-side heat exchanger connected to the existing piping, and connect the cleaning device and bypass pipe to the existing piping. After connection, the entire refrigeration cycle is evacuated and then filled with an appropriate amount of R407C. Then the compressor is operated. The high-temperature and high-pressure gas refrigerant discharged from the compressor first passes through the oil separator. At this stage, the refrigeration oil discharged from the compressor together with the gas refrigerant is separated by the oil separator and returned to the suction side of the compressor.
  • the high-temperature and high-pressure gas refrigerant then passes through the four-way valve, and the gas is partially cooled by the high- and low-pressure heat exchanger to become liquid and become high-pressure gas-liquid two-phase refrigerant.
  • the high-pressure gas-liquid two-phase refrigerant passes through the existing pipe, the bypass pipe, and the existing pipe, and then is decompressed to a low-pressure gas-liquid two-phase refrigerant by the decompression device. After that, it is heated by a high / low pressure heat exchanger to become a low pressure gas. Next, it passes through the separation device, and at this time, the mineral oil washed in the existing piping is separated, and the mineral oil is held in the separation device.
  • Patent Document 1 After the temperature of the low-pressure refrigerant gas is lowered by the heat source side heat exchanger so that the discharge temperature of the compressor does not become too high, the refrigerant gas is sucked into the compressor through a four-way valve and an accumulator (Patent Document 1).
  • a refrigeration cycle apparatus includes a main refrigerant circuit in which a refrigerant circulates between a compressor, a heat source apparatus side heat exchanger, a first flow rate control apparatus, and a use side heat exchanger.
  • a refrigeration cycle apparatus comprising: a first gas-liquid separator; and a foreign material recovery container for recovering the foreign material contained in the refrigerant, and the space between the first gas-liquid separator and the foreign material recovery container.
  • a foreign matter recovery refrigerant circuit connected via a first flow path opening / closing device is installed in parallel to the main refrigerant circuit between the suction side of the compressor and the use side heat exchanger. .
  • the low pressure side pipe of the high / low pressure heat exchanger, the second gas-liquid separator, and the second flow path opening / closing device are sequentially connected between the first flow path opening / closing device and the foreign matter collection container. Is more preferable. In this case, it is preferable that the position of the first gas-liquid separator is higher than that of the second gas-liquid separator.
  • the inlet of the foreign substance recovery refrigerant circuit is connected to the inlet of the accumulator, and the outlet of the foreign substance recovery refrigerant circuit is connected to the outlet of the accumulator. Is preferred.
  • the refrigeration cycle apparatus configured as described above has a small difference between the refrigeration cycle having no foreign matter recovery refrigerant circuit and the refrigerant circuit configuration, and therefore, it is easy to add the foreign matter recovery refrigerant circuit and an inexpensive refrigerant circuit can be realized.
  • FIG. 3 is a refrigerant circuit diagram of the refrigeration cycle apparatus in Embodiment 1 of the present invention.
  • Embodiment 1 1 is a refrigerant circuit diagram of a refrigeration cycle apparatus (air conditioner) according to Embodiment 1 of the present invention.
  • the main refrigerant circuit of this air conditioner includes a compressor 1, a four-way valve 2 as a flow path switching valve, heat source side heat exchangers 3A and 3B, and first flow rate control devices 4A and 4B for controlling the refrigerant flow rate of the refrigerant circuit.
  • 4C use side heat exchangers 5A, 5B, 5C, an accumulator 9, and the like.
  • the accumulator 9 may be provided as necessary.
  • the series circuit of the first flow control device 4A and the use side heat exchanger 5A, the first flow control device 4B and the use side heat exchanger 5B, and the first flow control device 4C and the use side heat exchanger 5C are as follows. These are constituent elements of the indoor unit A, the indoor unit B, and the indoor unit C, and are connected in parallel. The number of indoor units is not particularly limited.
  • An oil recovery unit 23 is provided between the compressor 1 and the four-way valve 2, and a first air is provided between the four-way valve 2 and the accumulator 9 (the compressor 1 when there is no accumulator 9).
  • a liquid separator 20 is provided.
  • Double pipe heat exchange which is a high-low pressure heat exchanger having a high-pressure side pipe 7A and a low-pressure side pipe 7B between the heat source side heat exchangers 3A, 3B and the first flow rate control devices 4A, 4B, 4C.
  • a vessel 7 is provided between the double pipe heat exchanger 7 and the first flow rate control devices 4A, 4B, 4C.
  • a third flow rate control device 27 for controlling the downstream pressure during the cooling operation and a fifth on-off valve 28 is provided.
  • a sixth open / close valve 29 is provided between the use side heat exchangers 5A, 5B, 5C and the four-way valve 2.
  • the pipe connecting the fifth on-off valve 28 and the first flow control devices 4A, 4B, 4C is called a liquid side extension pipe (E), and the sixth on-off valve 29 and the use side heat exchangers 5A, 5B,
  • the pipe connecting 5C is referred to as a gas side extension pipe (F).
  • the refrigerant circulates in the main refrigerant circuit configured as described above according to the direction of the four-way valve 2 switched according to the cooling operation or the heating operation.
  • a first bypass circuit is provided in which the valve 11, the foreign material recovery container 8, and the first check valve 12 are connected in series.
  • the first bypass circuit branches from between the heat source side heat exchanger 3 and the third flow control device 27, and the compressor 1 and the accumulator 9 (the first gas-liquid separator 20 in the absence of the accumulator 9). ) are connected between the refrigerant pipes. Further, the accumulator 9 and the first gas-liquid separator 20 are connected to the second gas-liquid separator 21 via a second bypass circuit including a second check valve 26.
  • the first gas-liquid separation device 20 is a first opening / closing device that is a first channel opening / closing device.
  • a third bypass circuit including the valve 10 is connected.
  • the container 8 constitutes a foreign matter collecting refrigerant circuit as foreign matter collecting means for collecting foreign matters in the refrigerant.
  • first check valve 12 is the forward direction toward the compressor 1
  • second check valve 26 is the forward direction toward the accumulator 9.
  • the first gas-liquid separation device 20 is configured to flow a liquid phase to the first on-off valve 10 side and a gas phase to the accumulator 9 side.
  • the second gas-liquid separation device 21 is configured to flow a liquid phase to the second on-off valve 11 side and a gas phase to the second check valve 26 side.
  • the first pressure detection means 13 and the second pressure detection means 14 are connected to the discharge side and the suction side of the compressor 1, respectively.
  • the 3rd pressure detection means 15 is connected to the middle of piping which connects the 3rd flow control device 27 and the 5th on-off valve 28.
  • the first temperature detection means 16 is provided on the discharge side of the compressor 1, and the second temperature detection means 17 is provided between the low pressure side pipe 7 ⁇ / b> B of the double pipe heat exchanger 7 and the second gas-liquid separation device 21. Between the pipes.
  • the third temperature detection means 18A, 18B, 18C are connected between the first flow control devices 4A, 4B, 4C and the use side heat exchangers 5A, 5B, 5C.
  • the fourth temperature detection means 19A, 19B, 19C are connected to each use side heat exchanger side between the use side heat exchangers 5A, 5B, 5C and the gas side extension pipe (F).
  • the 5th temperature detection means 22 is provided in order to detect outdoor temperature.
  • the element in the wavy line D of FIG. 1 represents the component of the outdoor unit (D).
  • the refrigerant containing the refrigerating machine oil discharged from the compressor 1 separates the refrigerating machine oil in the oil recovery unit 23, and passes through the four-way valve 2 to perform heat exchange on the rear heat source machine side Heat is exchanged with air in the vessel 3 to be condensed and liquefied. Thereafter, the refrigerant is further cooled by the high-pressure side pipe 7A of the double-tube heat exchanger 7, and the cooled refrigerant is partially opened by the third flow control device 27 after the pressure is adjusted.
  • the first flow control devices 4A, 4B, 4C of the indoor unit via the liquid side extension pipe (E).
  • the refrigerant depressurized by the first flow control devices 4A, 4B, 4C exchanges heat with air in the use side heat exchangers 5A, 5B, 5C to be evaporated and gasified, and the liquid side extension pipe (F) is opened.
  • the first gas-liquid separator 20 and the accumulator 9 are returned to the suction side of the compressor 1.
  • a part of the refrigerant separated after passing through the high pressure side pipe 7A of the double pipe heat exchanger 7 is depressurized by the second flow control device 6, and high pressure is given by the low pressure side pipe 7B of the double pipe heat exchanger. It evaporates by exchanging heat with the side pipe 7 ⁇ / b> A, and flows into the pipe connecting the first gas-liquid separator 20 and the accumulator 9 via the second gas-liquid separator 21 and the second check valve 26.
  • the first on-off valve 10 and the second on-off valve 11 are closed, and the first gas-liquid separation device 20 to the first on-off valve 10 and the second gas-liquid separation.
  • the refrigerant does not flow from the device 21 to the second on-off valve 11.
  • the first flow control devices 4A, 4B, 4C control the difference between the fourth temperature detection devices 19A, 19B, 19C and the third temperature detection devices 18A, 18B, 18C to a constant numerical value, for example, “2”.
  • the second flow rate control device 6 is the difference between the saturation temperatures of the second temperature detection device 17 and the second pressure detection device 14, for example, “5”
  • the third flow rate control device 27 is the third pressure detection device 15. For example, “3.0 MPa”.
  • the control value by the 3rd pressure detection apparatus 15 turns into a value set below the allowable value of piping.
  • the refrigerant containing the refrigerating machine oil discharged from the compressor 1 separates the refrigerating machine oil in the oil recovery unit 23, and the four-way valve 2, the opened sixth on-off valve 29, and the liquid side extension pipe
  • heat is exchanged with air in the use side heat exchangers 5A, 5B, and 5C to be condensed and liquefied, and the pressure is reduced in the first flow rate control devices 4A, 4B, and 4C to be in a two-phase state.
  • the refrigerant in the two-phase state passes through the gas side extension pipe (E), the opened fifth on-off valve 28, the fully opened third flow rate control device 27, the pipe 7A of the double pipe heat exchanger, and the heat source After exchanging heat with air in the machine-side heat exchanger 3 and evaporating gas, it returns to the suction side of the compressor 1 via the four-way valve 2.
  • the 2nd flow control apparatus 6 is fully closed, and a refrigerant
  • coolant does not flow into the piping 7B of a double tube heat exchanger.
  • subcooling at the outlet portions of the use side heat exchangers 5A, 5B, and 5C can be controlled.
  • the subcools at the outlets are values obtained by subtracting the detected temperatures of the second temperature detecting means 18A, 18B, and 18C from the saturation temperature of the detected pressure of the first pressure detecting means 13.
  • This foreign matter recovery operation is an extension pipe portion (here, a liquid extension pipe (E) and a gas extension pipe (F)) in a refrigeration system that uses mineral oil such as that used in CFC refrigerant or HCFC refrigerant as refrigeration oil.
  • the first on-off valve 10 and the second on-off valve 11 that were normally closed during the cooling operation are opened, and the second flow control device 6 is closed.
  • the refrigerant does not flow to the second flow rate control device 6 with respect to the flow of the normal cooling operation, but instead the liquid phase separated by the first gas-liquid separation device 20 is the first on-off valve 10.
  • the pipe 7B of the double-pipe heat exchanger enters the pipe 7B of the double-pipe heat exchanger, is heated and evaporated there, and is separated into gas and liquid by the second gas-liquid separation device 21, so that the refrigerant in the liquid phase or the two-phase is second closed. It flows into the foreign material collection container 8 through the valve 11, and only the gas refrigerant returns to the suction portion of the compressor 1 through the first check valve 12.
  • the main part of the foreign matter capturing means can be composed of a simple structure (second gas-liquid separator 21, second on-off valve 11 and foreign matter collection container 8), and can be produced at low cost. It becomes.
  • the indoor units 4A to 4C are partially operated, for example, only the use-side heat exchanger 5A is operated, the first flow control device 4A is fully opened, and the first flow control devices 4B and 4C are The second flow rate control device 6 is fully closed, and the third flow rate control device 27 is operated in the same manner as the normal cooling control. In this case, the refrigerant that has exited the third flow control device 27 cannot evaporate in the use-side heat exchanger 5A.
  • the first gas-liquid separator 20 is reached.
  • the removed foreign matter and the liquid phase enter the pipe 7 ⁇ / b> B of the double-pipe heat exchanger through the first on-off valve 10, and after evaporating the refrigerant slightly there,
  • the gas-liquid separator 21 is entered, and the remaining liquid phase and mineral oil are recovered in the foreign material recovery container 8.
  • one indoor unit is operated at regular intervals, and all the indoor units are individually operated in the same manner, and finally the normal cooling operation is performed for a short time, for example, 20 seconds.
  • the compressor 1 is stopped, and then the first on-off valve 10 and the second on-off valve 11 are closed.
  • the position of the first gas-liquid separator 20 is set higher than that of the second gas-liquid separator 21 so that the refrigerant flows from the first gas-liquid separator 20 to the second gas-liquid separator 21.
  • the operating capacity of the indoor units 4A to 4B is set so as to be an annular two-phase flow that can recover the mineral oil in the pipe.
  • the fifth temperature detection means 22 becomes 10 ° C. or less, for example, the third on-off valve 24 and the fourth on-off valve 25 are closed to increase the high pressure.
  • the 5th temperature detection means 22 exceeds 10 degreeC, for example, the 3rd on-off valve 24 and the 4th on-off valve 25 are opened.
  • the openings of the flow control devices 4A, 4B, and 4C of the indoor units that are fully opened are periodically alternately opened to the normal operation. It may be varied.
  • FIG. 4 is a flowchart illustrating the flow of these foreign substance recovery operations.
  • the foreign matter recovery operation is started (S1).
  • the first on-off valve 10 and the second on-off valve 11 are opened (S2), and the indoor unit to be operated is determined (S3).
  • the normal cooling operation is performed for about 20 seconds (S8).
  • the foreign matter collecting operation is terminated and the compressor 1 is stopped (S9, S10).
  • the first on-off valve 10 and the second on-off valve 11 are closed (S11).
  • FIG. 5 is a refrigerant circuit diagram of the refrigeration cycle apparatus in Embodiment 2 of the present invention.
  • the liquid refrigerant separated from the first gas-liquid separator 20 and the collected foreign matter are caused to flow directly into the foreign matter collection container 8 without passing through the double pipe heat exchanger 7. Also good.
  • the first gas-liquid separation device 20, the first on-off valve 10, and the foreign material collection container 8 constitute a foreign material collection refrigerant circuit.
  • the foreign matter collection container 8 is selected to have a size that allows liquid refrigerant or the opening degree of the flow control devices 4A, 4B, and 4C of the indoor units that are fully opened during the foreign matter collection operation is periodically set. It is preferable to suppress the refrigerant recovery amount in the foreign material recovery container 8 by alternately changing the full opening and the normal operation opening degree.
  • 1 compressor, 2: four-way valve, 3A, 3B: heat source side heat exchanger, 4A, 4B, 4C: first flow control device (first expansion device), 5A, 5B, 5C: use side heat Exchanger, 6: second flow rate control device (second throttle device), 7: double pipe heat exchanger (high / low pressure heat exchanger), 8: foreign matter collection container, 9: accumulator, 10: first On-off valve, 11: second on-off valve, 12: first check valve, 13: first pressure detection means, 14: second pressure detection means, 15: third pressure detection means, 16: first 1 temperature detection means, 17: second temperature detection means, 18A, 18B, 18C: third temperature detection means, 19A, 19B, 19C: fourth temperature detection means, 20: first gas-liquid separator , 21: second gas-liquid separator, 22: fifth temperature detecting means, 23: oil recovery device, 24: third on-off valve, 25: fourth Closed valve, 26: second check valve, 27: third flow control device (third throttling device), 28:

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

L'invention porte sur un appareil à cycle de réfrigération qui comprend un circuit de réfrigérant principal à travers lequel circule un réfrigérant entre un compresseur (1), un échangeur de chaleur côté unité source de chaleur (3), un premier dispositif de commande de débit (4) et un échangeur de chaleur côté usagé (5) ; l'appareil ayant un premier séparateur gaz-liquide (20) et un récipient de récupération de contaminants (8) pour récupérer des contaminants contenus dans le réfrigérant, et un circuit de réfrigérant de récupération de contaminants qui est relié au premier séparateur gaz-liquide (20) et au récipient de récupération de contaminants (8) par l'intermédiaire d'un premier dispositif d'ouverture/fermeture de canal d'écoulement (10) qui est installé en parallèle au circuit de réfrigérant principal entre l'échangeur de chaleur côté usagé (5) et le côté d'admission du compresseur (1).
PCT/JP2011/000283 2011-01-20 2011-01-20 Appareil à cycle de réfrigération WO2012098582A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11855961.6A EP2667120B1 (fr) 2011-01-20 2011-01-20 Appareil à cycle de réfrigération
PCT/JP2011/000283 WO2012098582A1 (fr) 2011-01-20 2011-01-20 Appareil à cycle de réfrigération
JP2012553460A JP5762441B2 (ja) 2011-01-20 2011-01-20 冷凍サイクル装置
EP14198981.4A EP2905562B1 (fr) 2011-01-20 2011-01-20 Appareil de circuit de réfrigération

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/000283 WO2012098582A1 (fr) 2011-01-20 2011-01-20 Appareil à cycle de réfrigération

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WO2012098582A1 true WO2012098582A1 (fr) 2012-07-26

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PCT/JP2011/000283 WO2012098582A1 (fr) 2011-01-20 2011-01-20 Appareil à cycle de réfrigération

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EP (2) EP2667120B1 (fr)
JP (1) JP5762441B2 (fr)
WO (1) WO2012098582A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110735A (zh) * 2013-04-15 2014-10-22 Lg电子株式会社 空调及其控制方法
EP2792973A1 (fr) * 2013-04-15 2014-10-22 LG Electronics Inc. Climatiseur et procédé de commande correspondant
JP2016128731A (ja) * 2015-01-09 2016-07-14 パナソニックＩｐマネジメント株式会社 冷凍機
WO2018146719A1 (fr) * 2017-02-07 2018-08-16 三菱電機株式会社 Dispositif à cycle de réfrigération

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Publication number Priority date Publication date Assignee Title
CN108036554A (zh) * 2018-01-05 2018-05-15 珠海格力电器股份有限公司 空调用循环系统、空调及空调控制方法
CN113432350A (zh) * 2020-03-20 2021-09-24 青岛海尔空调电子有限公司 用于空调系统的管路清油装置及空调系统
CN113654192B (zh) * 2021-07-15 2023-04-18 青岛海尔空调器有限总公司 室外换热器的管内自清洁控制方法

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EP2667120B1 (fr) 2016-08-17
JP5762441B2 (ja) 2015-08-12
EP2905562B1 (fr) 2019-09-04
EP2667120A4 (fr) 2014-07-09
EP2667120A1 (fr) 2013-11-27
JPWO2012098582A1 (ja) 2014-06-09
EP2905562A1 (fr) 2015-08-12

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