WO2000011418A1 - Machine frigorifique munie d'un circuit d'injection de gaz et d'un separateur gaz/liquide - Google Patents

Machine frigorifique munie d'un circuit d'injection de gaz et d'un separateur gaz/liquide Download PDF

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Publication number
WO2000011418A1
WO2000011418A1 PCT/JP1999/003930 JP9903930W WO0011418A1 WO 2000011418 A1 WO2000011418 A1 WO 2000011418A1 JP 9903930 W JP9903930 W JP 9903930W WO 0011418 A1 WO0011418 A1 WO 0011418A1
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WO
WIPO (PCT)
Prior art keywords
gas
liquid separator
refrigerant
liquid
pipe
Prior art date
Application number
PCT/JP1999/003930
Other languages
English (en)
Japanese (ja)
Inventor
Yuji Yoneda
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
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2000011418A1 publication Critical patent/WO2000011418A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0036—Flash degasification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0068—General arrangements, e.g. flowsheets
    • 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
    • F25B39/02—Evaporators
    • F25B39/028—Evaporators having distributing means
    • 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
    • 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
    • F25B2313/0272—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using bridge circuits of one-way 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
    • 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
    • F25B2400/16—Receivers
    • 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

  • the present invention relates to a refrigerator and a gas-liquid separator having an action circuit.
  • FIG. 6 shows a refrigerant circuit of a refrigerator having a conventional gas injection circuit 120.
  • the refrigerant circuit includes a compressor 100, a first heat exchanger 101, a first electric expansion valve 102, a gas-liquid separator 103, a second electric expansion valve 105, a second heat Exchangers 106 are sequentially connected in series.
  • the second heat exchanger 106 is connected to the suction side of the compressor 100 via the four-way switching valve 107 and the accumulator 108.
  • the discharge side of the compressor 100 is connected to the first heat exchanger 101 via a four-way switching valve 107.
  • the gas-liquid separator 103 has a first liquid pipe 110, a second liquid pipe 111, and a gas pipe 112.
  • the first liquid pipe 110 is connected to the first electric expansion valve 102
  • the second liquid pipe 111 is connected to the second electric expansion valve 105.
  • the gas pipe 112 is connected to a point of the intermediate pressure of the compressor 100 by a gas injection pipe 115 via a solenoid valve 113.
  • the refrigerant discharged from the compressor 100 is condensed in the first heat exchanger 101 and the first electric expansion valve 1 After expanding at 0 2 to reach a predetermined intermediate pressure, it is introduced into the gas-liquid separator 103 via the first liquid pipe 110.
  • the liquid refrigerant passes through the second liquid pipe 111, expands at the second electric expansion valve 105, and reaches a predetermined intermediate pressure. Evaporate in exchanger 106. Then, the refrigerant is sucked from the second heat exchanger 106 through the four-way switching valve 107 and the accumulator 108 from the suction side of the compressor 100.
  • the gas refrigerant is injected from the gas pipe 112 of the gas-liquid separator 103 to the intermediate pressure of the compressor 100 by the gas injection pipe 115.
  • the gas injection pipe 115 By injecting the gas refrigerant into the compressor 100 with the injection pipe 1 15, the amount of refrigerant circulating from the compressor 100 to the first heat exchanger 101 acting as a condenser is increased. Improves heat exchange efficiency.
  • the expansion mechanisms 102 and 105 on both sides of the gas-liquid separator 103 are necessary for performing stable and efficient operation with the refrigerant at a predetermined intermediate pressure.
  • the refrigerant discharged from the compressor 1 ⁇ 0 is condensed in the second heat exchanger 106, 2 After being expanded by the electric expansion valve 105, it is introduced into the gas-liquid separator 103 via the second liquid pipe 111.
  • the liquid refrigerant passes through the first liquid pipe 110, expands in the first electric expansion valve 102, and evaporates in the first heat exchanger 101.
  • the gas refrigerant is injected from the gas pipe 112 of the gas-liquid separator 103 to the intermediate pressure point of the compressor 100 by the gas injection pipe 115.
  • an object of the present invention is to provide a gas-liquid separator capable of realizing an inexpensive and compact injection circuit and a refrigerator having the same.
  • a gas-liquid separator includes a compressor, a first heat exchanger, a pressure reducing mechanism, a gas-liquid separator, and a second heat exchanger connected in series.
  • Either the first flow tube or the second flow tube has a fixed expansion mechanism, and the other has a movable expansion mechanism.
  • the liquid outlet pipe as the second flow pipe has a throttle hole as a fixed expansion mechanism, and the first or the second working as an evaporator from the throttle hole.
  • refrigerant is introduced into the second heat exchanger.
  • the refrigerant is introduced from the throttle hole of the liquid outlet pipe of the gas-liquid separator into the first or second heat exchanger as the evaporator.
  • the liquid refrigerant in the gas-liquid separator enters the liquid outlet pipe through the throttle hole, the liquid refrigerant expands to a predetermined intermediate pressure. That is, the throttle hole of the liquid outlet pipe serves as the second expansion mechanism of the conventional example. Therefore, according to the present invention, only one expansion mechanism can be reduced, and cost and space can be reduced. Further, in the first embodiment, since the fixed expansion mechanism is formed by the throttle hole, the structure can be simplified.
  • a gas-liquid separator is characterized in that the first flow tube has a movable expansion mechanism and the second flow tube has a fixed expansion mechanism.
  • gas-liquid separator of one embodiment is characterized in that the fixed type expansion mechanism is a throttle hole.
  • the fixed expansion mechanism is a throttle hole, the fixed expansion mechanism can be configured simply and easily.
  • gas-liquid separator is characterized in that the fixed expansion mechanism is a cavity reach.
  • the fixed expansion mechanism is a capillary tube, the fixed expansion mechanism can be configured easily and easily.
  • gas-liquid separator of one embodiment is characterized by comprising a rectifying means for flowing the refrigerant from the same flow tube into the gas-liquid separation vessel during both cooling and heating.
  • the refrigerant flows into the gas-liquid separation vessel from the same flow pipe during cooling and heating by the rectifying means, so that the gas-liquid separator can be used for both cooling and heating with a simple circuit be able to.
  • gas-liquid separator is characterized in that the rectifying means is a check valve bridge.
  • a refrigerator of the present invention is characterized by including the gas-liquid separator of the above-described one embodiment, and including a gas injection circuit for injecting a gas refrigerant from the gas-liquid separator into the compressor.
  • This refrigerator is provided with a gas injection circuit in which one of the two expansion mechanisms is a fixed expansion mechanism, thereby reducing costs.
  • FIG. 1 is a diagram showing a gas injection circuit provided with a first embodiment of a gas-liquid separator of the present invention.
  • FIG. 2A is a schematic diagram showing the structure of the first embodiment
  • FIG. 2B is a diagram showing the liquid outlet pipe of the first embodiment viewed from above
  • FIG. FIG. 3 is a schematic view showing a throttle hole formed in a liquid outlet tube of one embodiment.
  • FIG. 3 is a circuit diagram showing a second embodiment of the gas-liquid separator of the present invention.
  • FIG. 4 is a circuit diagram showing a third embodiment of the gas-liquid separator of the present invention.
  • FIG. 5 is a circuit diagram showing a fourth embodiment of the gas-liquid separator of the present invention.
  • FIG. 6 is a refrigerant circuit diagram of a refrigerator equipped with a gas injection circuit having a conventional gas-liquid separator.
  • FIG. 1 shows a gas-liquid separator 16 according to a first embodiment of the present invention, an expansion mechanism connected to the gas-liquid separator 16, and a gas injection pipe.
  • the gas injection circuit 1 shown in FIG. 1 is used in the refrigeration circuit shown in FIG. 6 by replacing the circuit 120 enclosed by a broken line in the conventional example.
  • the gas injection circuit 1 includes a first series circuit 5 in which two check valves 2 and 3 are connected in series with each other so as to be in a forward direction toward each other, and two check valves 6 and 7 are alternately arranged. And a second series circuit 8 connected in series in the opposite direction toward the other party.
  • the first and second series circuits 5, 8 are arranged in parallel between the refrigerant pipe 10 to the first heat exchanger 101 and the refrigerant pipe 11 to the second heat exchanger 106 in FIG. Connected to.
  • the refrigerant pipe 12 connecting the check valves 2 and 3 and the check valves 6 and 7 are connected.
  • the electric expansion valve 15 and the gas-liquid separator 16 are connected in series between the refrigerant pipe 13 and the refrigerant pipe 13.
  • the gas-liquid separator 16 has a liquid inlet pipe 17 connected to the electric expansion valve 15, a liquid outlet pipe 18 connected to the refrigerant pipe 13, and a gas pipe 19.
  • This gas pipe 19 is connected to a gas injection pipe 21 having an electromagnetic valve 20.
  • the gas injection pipe 21 is connected to the compressor 100 in FIG. 6 at an intermediate pressure.
  • the gas-liquid separator 16 includes a substantially cylindrical vessel 25, a liquid inlet pipe 17, a liquid outlet pipe 18, and a gas pipe 19.
  • the liquid inlet pipe 17 enters a predetermined dimension d1 from the ceiling 25A to the bottom 25B of the container 25, and has a port 17A opened downward.
  • the gas pipe 19 enters a predetermined dimension d2 from the ceiling 25A to the bottom 25B adjacent to the liquid inlet pipe 17 and has an opening 19A opening downward.
  • the dimension d2 in which the gas pipe 19 enters is shorter than the dimension d1 in which the liquid inlet pipe 17 enters.
  • the port 19A is positioned above the port 17A so that the liquid refrigerant does not enter the port 19A.
  • the liquid outlet pipe 18 enters a predetermined dimension d3 upward from the bottom 25B of the container 25 toward the ceiling 25A. This liquid outlet pipe 18 is the part
  • the tip 28 of 27 is closed, and a first throttle hole 30 is formed in a portion slightly closer to the bottom 25B than the tip 28. Also, as shown in Figure 2C,
  • a second throttle hole 31 is formed at a distance from the base 30 toward the bottom 25B by a predetermined dimension d4.
  • the gas injection circuit 1 having the above configuration is connected in place of the gas injection circuit 120 enclosed by a broken line in FIG.
  • the refrigerant discharged from the compressor 100 and condensed in the first heat exchanger 101 is connected to the refrigerant pipe 1. From 0 is introduced into the gas injection circuit 1.
  • the refrigerant introduced into the refrigerant pipe 10 passes through the check valve 2, the electric expansion valve 15, and the liquid inlet pipe 17 and is introduced into the gas-liquid separator 16.
  • the refrigerant introduced into the gas-liquid separator 16 is separated into a gas refrigerant and a liquid refrigerant, and the gas refrigerant is introduced into the gas injection pipe 21 from the port 19 A of the gas pipe 19, It is introduced into the compressor 100 at an intermediate pressure via the valve 200.
  • the liquid refrigerant is From the two throttle holes 30, 31 formed in the part 27 into which the liquid outlet pipe 18 enters, it is introduced into the liquid outlet pipe 18 while expanding, through the check valve 7, It is introduced into the refrigerant pipe 11. Then, the liquid refrigerant introduced into the refrigerant pipe 11 is introduced into the second heat exchanger 106 in FIG. 6 and is evaporated, and the liquid refrigerant passes through the four-way switching valve 107 and the accumulator 108. After that, it is sucked from the suction side of the compressor 100.
  • the refrigerant discharged from the compressor 100 and condensed in the second heat exchanger 106 flows into the refrigerant pipe 1. From 1 is introduced into the gas injection circuit 1.
  • the refrigerant introduced into the refrigerant pipe 11 passes through the check valve 3, expands by the electric expansion valve 15 to a predetermined intermediate pressure, and then passes through the liquid inlet pipe 17 to be separated into gas and liquid. It is introduced into the vessel 16.
  • the refrigerant introduced into the gas-liquid separator 16 is separated into a gas refrigerant and a liquid refrigerant, and the gas refrigerant is introduced into the gas injection pipe 21 from the port 19 A of the gas pipe 19, Via the valve 20, it is introduced into the intermediate pressure section of the compressor 100.
  • the liquid refrigerant is introduced into the liquid outlet pipe 18 while expanding from the two throttle holes 30 and 31 formed in the portion 27 into which the liquid outlet pipe 18 enters, and is checked.
  • the refrigerant is introduced into the refrigerant pipe 10 via the valve 6.
  • the liquid refrigerant introduced into the refrigerant pipe 10 is introduced into the first heat exchanger 101 in FIG. 6, is evaporated, and passes through the four-way switching valve 107 and the accumulator 108. It is sucked from the suction side of the compressor 100.
  • the gas-liquid separator 16 of this embodiment when the liquid refrigerant in the gas-liquid separator 16 enters the liquid outlet pipe 18 from the first and second throttle holes 30 and 31, The liquid refrigerant expands to a predetermined intermediate pressure. Therefore, according to the gas-liquid separator 16, the throttle holes 30, 31 of the liquid outlet pipe 18 serve as the second expansion mechanism of the conventional example. Therefore, according to the gas-liquid separator 16 of this embodiment, only one expansion mechanism can be reduced as compared with the conventional one, and the cost and space can be reduced.
  • the rectifier circuit is constituted by the four check valves 2, 3, 6, and 7, and the refrigerant is supplied to the electric expansion valve 15 and the gas-liquid separator 16 in the order of cooling and heating. This allows the gas-liquid separator 16 to work effectively.
  • two throttle holes 30 and 31 are formed in the liquid outlet pipe 18. However, one throttle hole may be formed, or three or more throttle holes may be formed. The aperture may be set by the size and number of apertures. If the operation is limited to either cold or warm operation, the rectifier circuit may be removed and the electric expansion valve 15 and the liquid outlet pipe 18 may be directly connected to the refrigerant pipes 10 and 11.
  • FIG. 3 shows a second embodiment of the gas-liquid separator of the present invention.
  • the gas-liquid separator 50 includes a substantially cylindrical container 51, a liquid inlet pipe 52 inserted by a predetermined dimension from the ceiling 51A to the bottom 51B of the container 51, and a container.
  • a liquid outlet pipe 53 connected to the bottom 51 B of 51 is provided.
  • the liquid inlet tube 52 has a capillary tube 55, and the liquid outlet tube 53 has an electric expansion valve 56.
  • a gas outlet pipe is provided adjacent to the liquid inlet pipe 52 on the ceiling 51A of the container 51.
  • An electromagnetic valve 58 is connected to the gas outlet pipe 57.
  • the solenoid valve 58 is connected to an injection pipe (not shown) connected to a point of the compressor at an intermediate pressure.
  • the gas-liquid separator 50 has a bridge rectifier circuit 60.
  • the bridge rectifier circuit 60 is composed of a series circuit in which two check valves 61 and 62 are connected in series so that the front side is aligned with the forward direction with respect to the forward direction.
  • Valves 63 and 64 Force S This is a circuit connected in parallel with a series circuit connected in series so that the front sides are back to back in the forward direction.
  • the connection point between the check valve 61 and the check valve 63 of this rectifier circuit 60 is connected to the refrigerant pipe 65, and the connection point between the check valve 62 and the check valve 64 is connected to the refrigerant pipe 66. Is done.
  • the gas-liquid separator 50, the refrigerant pipes 65, 66, the gas outlet pipe 57, the solenoid valve 58, and the injection pipe constitute an injection circuit.
  • This injection circuit is used, for example, in place of the gas injection circuit 120 shown in FIG.
  • the refrigerant pipes pass through the heat exchanger 101 from the compressor 100.
  • this refrigerant passes through check valve 61, expands in capillary tube 55 to a predetermined intermediate pressure, and then is introduced into gas-liquid separation vessel 51. Is done. And, the gas refrigerant of the refrigerant at the predetermined intermediate pressure is a gas outlet pipe 57 force, Through the solenoid valve 58 to be injected into the compressor 100 at an intermediate pressure.
  • the liquid refrigerant of the above-described predetermined intermediate-pressure refrigerant passes from the liquid outlet pipe 53 of the bottom 51 B through the electric expansion valve 56 to reach the predetermined intermediate pressure, and then is returned to the check valve 6 4 And the refrigerant pipe 66 to be introduced into the heat exchanger 106 serving as an evaporator.
  • the refrigerant when refrigerant is introduced from the compressor 100 to the refrigerant pipe 66 through the heat exchanger 106, the refrigerant passes through the check valve 62 and passes through the capillary tube 55. After expanding to a predetermined intermediate pressure, it is introduced into the gas-liquid separation vessel 51. Then, in the same manner as described above, the gas refrigerant is injected from the gas outlet pipe 57 through the solenoid valve 58 into the intermediate pressure of the compressor 100. On the other hand, the liquid refrigerant of the above-mentioned predetermined intermediate-pressure refrigerant passes from the liquid outlet pipe 53 through the electric expansion valve 56 to reach the predetermined intermediate pressure, and then reaches the check valve 63 and the refrigerant pipe 65. Through the heat exchanger 101 to be an evaporator.
  • the capillary tube provided in the liquid inlet pipe 52 plays the role of the first electric expansion valve of the related art. And space can be reduced.
  • gas-liquid separator 50 is provided with the bridge rectifier circuit 60, refrigerant is supplied from the liquid inlet tube 52 provided with the cabillary tube 55 to the gas-liquid separation container 51 during cooling and heating.
  • a gas-liquid separator 50 which can be introduced and has a relatively simple circuit configuration and can be operated similarly in both cooling and heating can be realized.
  • FIG. 4 shows a third embodiment of the gas-liquid separator of the present invention.
  • the capillary tube 55 and the electric expansion valve 56 are replaced with the gas-liquid separator of the second embodiment. Therefore, in the third embodiment, points different from the above-described second embodiment will be mainly described.
  • an electric expansion valve 56 is provided in the liquid inlet pipe 52 upstream of the gas-liquid separation vessel 51 to control the degree of expansion of the refrigerant. It becomes easier to control the pressure of the medium.
  • FIG. 5 shows a fourth embodiment of the gas-liquid separator of the present invention.
  • the gas-liquid separator 70 of the fourth embodiment includes a substantially cylindrical container 71 and a ceiling 71 A from the bottom of the container 71.
  • Liquid inlet pipes 72 and 73 inserted by predetermined dimensions toward 71 B, and liquid outlet pipe 75 connected to the bottom 71 B of container 71 are provided.
  • the liquid inlet pipe 72 and the liquid inlet pipe 73 are connected to a peripheral area of the ceiling 71A, and a gas outlet is provided at a central area of the ceiling 71A between the liquid inlet pipes 72 and 73.
  • Tube 7 7 is connected.
  • the liquid inlet tube 72 is connected to a capillary tube 78, and the liquid inlet tube 73 is connected to a capillary tube 80. Further, a solenoid valve 81 is connected to the gas outlet pipe 77. The solenoid valve 81 is connected to an intermediate pressure point of the compressor by an injection pipe (not shown).
  • a motor-operated expansion valve 83 is connected to the liquid outlet pipe 75 of the bottom 71 B of the container 71.
  • a check valve 85 is connected between the electric expansion valve 83 and the capillary tube 78, and a check valve 86 is connected between the electric expansion valve 83 and the capillary tube 80.
  • the check valves 85, 86 and the capillary tubes 78, 80 form a rectifier circuit, and the refrigerant pipe 87 is connected to the connection point between the check valve 85, and the capillary tubes 78.
  • a refrigerant pipe 88 is connected to a connection point between the check valve 86 and the cavity tube 80.
  • the check valves 85, 86 are forwardly directed from the electric expansion valve 83 to the refrigerant pipes 87, 88, respectively.
  • the check valves 85, 86 and the cavities 78, 80 constitute a rectifier circuit.
  • the gas-liquid separator 70, the refrigerant pipes 87, 88, the gas outlet pipe 77, the electromagnetic valve 81, and the injection pipe constitute an injection circuit.
  • This injection circuit is used, for example, in place of the gas injection circuit 120 shown in FIG.
  • the refrigerant when refrigerant is introduced from the compressor 100 through the heat exchanger 101 into the refrigerant pipe 87, the refrigerant is passed through the capillary tube 78. After reaching a predetermined intermediate pressure, it is introduced into the gas-liquid separation container 71. Then, the gas refrigerant of the above-mentioned predetermined intermediate-pressure refrigerant is injected from the gas outlet pipe 77 through the solenoid valve 81 into the intermediate pressure of the compressor 100. On the other hand, the liquid refrigerant of the predetermined intermediate-pressure refrigerant flows from the liquid outlet pipe 75 at the bottom 71 B through the electric expansion valve 83 and the check valve 86 to the heat exchanger 1 serving as an evaporator. Introduced at 06.
  • refrigerant is introduced from the compressor 100 through the heat exchanger 106 to the refrigerant pipe 88.
  • the refrigerant is introduced into the gas-liquid separator 71 after reaching a predetermined intermediate pressure through the capillary tube 80.
  • the gas refrigerant is injected from the gas outlet pipe 77 through the solenoid valve 81 into the intermediate pressure of the compressor 100.
  • the liquid refrigerant of the predetermined intermediate-pressure refrigerant is introduced from the liquid outlet pipe 75 through the electric expansion valve 83 and the check valve 85 into the heat exchanger 101 serving as an evaporator.
  • the two capillary tubes 78, 80 connected to the ceiling 71A of the gas-liquid separation vessel 71 are the same as the conventional first electric expansion valve.
  • costs can be reduced compared to the past.
  • the above two capillary tubes 78, 80 constitute half of the rectifier circuit, the circuit configuration can be simplified.
  • the present invention can be applied to a refrigerator having a gas injection circuit and a gas-liquid separator constituting the gas injection circuit, and is useful for realizing a gas injection circuit of the refrigerator at low cost and compactness. .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (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 concerne un séparateur gaz/liquide (16) dans lequel un tuyau de sortie de liquide (18) comporte des étranglements (30, 31) et le frigorigène est acheminé dans un premier échangeur de chaleur (101) ou dans un deuxième échangeur de chaleur (106) qui, grâce à des orifices (30, 31) au diamètre limité par les étranglements, agissent comme un évaporateur lorsque le frigorigène liquide à l'intérieur du séparateur gaz/liquide (16) pénètre dans le tuyau de sortie de liquide (18) à travers les orifices (30, 31); le frigorigène liquide se dilate alors à une pression intermédiaire déterminée. Comme les orifices (30, 31) dans le tuyau de sortie de liquide (18) ont la fonction d'un mécanisme de dilatation, le nombre de mécanismes de dilatation peut être réduit d'une unité par rapport aux modèles existants, ce qui permet d'économiser de l'argent et de la place.
PCT/JP1999/003930 1998-08-21 1999-07-22 Machine frigorifique munie d'un circuit d'injection de gaz et d'un separateur gaz/liquide WO2000011418A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/235467 1998-08-21
JP23546798 1998-08-21

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WO2000011418A1 true WO2000011418A1 (fr) 2000-03-02

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002286315A (ja) * 2001-03-26 2002-10-03 Mitsubishi Electric Corp 空気調和機の冷媒回路
JP2009092327A (ja) * 2007-10-10 2009-04-30 Mitsubishi Electric Corp 気液分離器及び空気調和器
WO2009107626A1 (fr) * 2008-02-29 2009-09-03 ダイキン工業株式会社 Dispositif de réfrigération
FR2959558A1 (fr) * 2010-04-29 2011-11-04 Ecolactis Procede de migration de la charge en fluide frigorigene d'un systeme de refrigeration a charge reduite et dispositif mettant en œuvre ledit procede
CN113803915A (zh) * 2020-06-16 2021-12-17 Lg电子株式会社 空调装置

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Publication number Priority date Publication date Assignee Title
JPS54140247A (en) * 1978-04-24 1979-10-31 Toshiba Corp Cooler and heater
JPS5636344B2 (fr) * 1973-12-26 1981-08-24
JPS59142671U (ja) * 1983-03-11 1984-09-22 三菱重工業株式会社 冷凍サイクル
JPS60171362A (ja) * 1984-02-14 1985-09-04 三菱電機株式会社 空気調和機
JPS61114058A (ja) * 1985-09-19 1986-05-31 ダイキン工業株式会社 ヒ−トポンプ式冷凍装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5636344B2 (fr) * 1973-12-26 1981-08-24
JPS54140247A (en) * 1978-04-24 1979-10-31 Toshiba Corp Cooler and heater
JPS59142671U (ja) * 1983-03-11 1984-09-22 三菱重工業株式会社 冷凍サイクル
JPS60171362A (ja) * 1984-02-14 1985-09-04 三菱電機株式会社 空気調和機
JPS61114058A (ja) * 1985-09-19 1986-05-31 ダイキン工業株式会社 ヒ−トポンプ式冷凍装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002286315A (ja) * 2001-03-26 2002-10-03 Mitsubishi Electric Corp 空気調和機の冷媒回路
JP2009092327A (ja) * 2007-10-10 2009-04-30 Mitsubishi Electric Corp 気液分離器及び空気調和器
WO2009107626A1 (fr) * 2008-02-29 2009-09-03 ダイキン工業株式会社 Dispositif de réfrigération
JP2009229051A (ja) * 2008-02-29 2009-10-08 Daikin Ind Ltd 冷凍装置
AU2009218270B2 (en) * 2008-02-29 2011-12-22 Daikin Industries, Ltd. Refrigeration apparatus
FR2959558A1 (fr) * 2010-04-29 2011-11-04 Ecolactis Procede de migration de la charge en fluide frigorigene d'un systeme de refrigeration a charge reduite et dispositif mettant en œuvre ledit procede
CN113803915A (zh) * 2020-06-16 2021-12-17 Lg电子株式会社 空调装置
EP3926255A1 (fr) * 2020-06-16 2021-12-22 LG Electronics Inc. Climatiseur
US11668501B2 (en) 2020-06-16 2023-06-06 Lg Electronics Inc. Air conditioner

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