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WO2024214937A1 - Procédé de circulation de fluide frigorigène d'alimentation et de circulation d'un fluide frigorigène à basse température dans un côté aspiration d'une pompe à fluide frigorigène pour faire circuler, avec une pression accrue, un fluide frigorigène de système de congélation - Google Patents

Procédé de circulation de fluide frigorigène d'alimentation et de circulation d'un fluide frigorigène à basse température dans un côté aspiration d'une pompe à fluide frigorigène pour faire circuler, avec une pression accrue, un fluide frigorigène de système de congélation Download PDF

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Publication number
WO2024214937A1
WO2024214937A1 PCT/KR2024/001774 KR2024001774W WO2024214937A1 WO 2024214937 A1 WO2024214937 A1 WO 2024214937A1 KR 2024001774 W KR2024001774 W KR 2024001774W WO 2024214937 A1 WO2024214937 A1 WO 2024214937A1
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WIPO (PCT)
Prior art keywords
refrigerant
liquid
line
main
liquid refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2024/001774
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English (en)
Korean (ko)
Inventor
김봉석
김수민
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Hy Save Asia Co Ltd
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Hy Save Asia Co Ltd
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Publication of WO2024214937A1 publication Critical patent/WO2024214937A1/fr
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    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series

Definitions

  • the present invention relates to a liquid refrigerant circulation method for supplying and circulating low-temperature refrigerant to the suction side of a refrigerant liquid pump that circulates the refrigerant of a refrigeration system in a pressurized state, and more specifically, to a liquid refrigerant circulation method for supplying and circulating low-temperature refrigerant to the suction side of a refrigerant liquid pump in a refrigeration system that circulates refrigerant discharged to the outlet side of a condenser that condenses and liquefies high-temperature, high-pressure gaseous refrigerant compressed and discharged by a compressor provided in the middle of a refrigerant circulation line configured as a closed circuit in a pressurized state, thereby enabling the refrigerant discharged from the condenser to smoothly circulate to the evaporator side.
  • refrigeration systems are used in refrigerators and freezers for storing food, beverages, food ingredients, and food items at low temperatures for long periods of time, or in air conditioners and refrigerators/freezers for maintaining a comfortable indoor temperature against high outdoor temperatures.
  • the refrigeration system of the prior art is configured such that a compressor, a condenser, an expansion valve, an evaporator, etc. are connected to a refrigerant circulation circuit configured as a closed circuit, and includes an oil separator, a receiver, a liquid separator, and an electronic valve as auxiliary devices.
  • the high temperature and high pressure gaseous refrigerant is compressed in a compressor that is connected to a refrigerant circulation circuit by charging the refrigerant, and is sent to the condenser.
  • the high temperature and high pressure gaseous refrigerant is condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium (air, water, etc.) and sent to the expansion valve side.
  • an external (outdoor) heat exchange medium air, water, etc.
  • the condenser installed externally (outdoors) is greatly affected by external temperature changes.
  • the liquid refrigerant at room temperature which is condensed and liquefied in the condenser (200) and discharged through the outlet line (220), is pumped by the pumping operation of the refrigerant pump (400) installed in the liquid refrigerant transfer line (300), passes through the solenoid valve (500), and is supplied to the expansion valve (600) to rapidly expand, and the refrigerant in a mist state rapidly expanded in the expansion valve (600) is introduced into the evaporator (700) through the inlet line (710) of the evaporator (700), evaporates through heat exchange with a heat exchange medium (air, water, etc.) in the room (meaning the space where the evaporator is installed), changes into a low-temperature gaseous refrigerant, and is introduced into the compressor (100) through the inlet line (120) of the compressor (100) through the outlet line (720) and is compressed, thereby repeating the refrigerant circulation operation.
  • a heat exchange medium air, water, etc.
  • the refrigeration system of the prior art can be configured with a structure in which an oil separator (800) is formed between the inlet line (120) of the compressor (100) and the inlet line (210) of the condenser (200), as shown in the diagram of FIG. 10, and a receiver (900) is formed between the outlet line (220) of the condenser (200) and the refrigerant liquid pump (400).
  • an oil separator (800) is formed between the inlet line (120) of the compressor (100) and the inlet line (210) of the condenser (200), as shown in the diagram of FIG. 10
  • a receiver (900) is formed between the outlet line (220) of the condenser (200) and the refrigerant liquid pump (400).
  • a structure may be configured in which multiple compressors (100) are connected in parallel between the inlet line (210) of the condenser (200) and the outlet line (720) of the evaporator (700), or as shown in the diagram of FIG. 12, a structure may be configured in which multiple compressors (100), multiple evaporators (700), multiple solenoid valves (500) and multiple expansion valves (600) are connected.
  • the refrigerant pump (400) cannot smoothly pump the liquid refrigerant in the room temperature, and thus there is a problem in that the liquid refrigerant cannot be smoothly pumped and supplied to the expansion valve (600), and there are also problems such as generating fresh gas.
  • the present invention has been proposed in consideration of various problems occurring in the prior art as described above, and a condenser into which high-temperature, high-pressure gaseous refrigerant discharged from a compressor of a refrigeration system is introduced condenses the introduced gaseous refrigerant through heat exchange with an external heat exchange medium, and in order to enable the room temperature liquid refrigerant condensed and liquefied in the condenser to be smoothly transferred to the suction side of a refrigerant liquid pump, a liquid heat exchanger for a refrigeration device or a double-pipe heat exchanger configured to use a plate heat exchanger or an auxiliary condenser or a liquid receiver so that the room temperature liquid refrigerant condensed and liquefied in the condenser can be smoothly transferred to the suction side of a refrigerant liquid pump, and at the same time, a part of the liquid refrigerant transferred by the pumping operation of the refrigerant liquid pump is cooled through heat exchange and re-supplied to the
  • the invention aims to provide a method for circulating a liquid refrigerant, which is configured to smoothly transfer and supply the liquid refrigerant at room temperature discharged from the condenser and the cooled liquid refrigerant that is cooled by heat exchange and re-supplied, to the suction side of the refrigerant pump and suck them in together, so that even if the pressure of the condenser drops due to external temperature changes, the liquid refrigerant can be smoothly sucked and transferred to the suction side of the refrigerant pump.
  • the present invention is a means for pursuing the above object, and the refrigeration system of the first embodiment of the present invention is an embodiment using a plate heat exchanger, and comprises a compressor provided in the middle of a refrigerant circulation line configured to form a closed circuit, a main condenser configured to discharge liquid refrigerant at room temperature by condensing and liquefying high-temperature and high-pressure gaseous refrigerant compressed and discharged from the compressor, a refrigerant liquid pump installed in a liquid refrigerant transfer line connected to the outlet line of the main condenser, a main solenoid valve formed on the discharge side of the refrigerant liquid pump and controlling the circulation operation of the liquid refrigerant, a main expansion valve installed between the main solenoid valve and the inlet line of the evaporator to rapidly expand the liquid refrigerant transferred and supplied to the liquid refrigerant transfer line, and an evaporator that absorbs the surrounding heat in the process of causing the refrigerant in a mist state
  • the liquid refrigerant transfer line connected to the discharge side of the above refrigerant pump is connected to the inlet line of the evaporator while the main solenoid valve and the main expansion valve are formed in sequence.
  • a main bypass line having a first solenoid valve installed is connected to the liquid refrigerant transfer line connected between the discharge side of the above refrigerant pump and the main solenoid valve, and an auxiliary bypass line having a second solenoid valve and an auxiliary expansion valve formed in sequence is also connected to the above main bypass line.
  • the above main bypass line and auxiliary bypass line are each connected to the liquid refrigerant inlet of the liquid refrigerant circulation passage installed in parallel to the plate heat exchanger and the gas refrigerant inlet of the mist refrigerant circulation passage, respectively, and a cooling refrigerant transfer line connected to the suction side of the refrigerant liquid pump is connected to the liquid refrigerant outlet of the liquid refrigerant circulation passage installed in parallel to the plate heat exchanger, and a gas refrigerant transfer line connected to the inlet line of the compressor is connected to the gas refrigerant outlet of the mist refrigerant circulation passage installed in parallel to the plate heat exchanger, as a means for configuring the same.
  • the liquid refrigerant at room temperature which is condensed and liquefied in the main condenser and discharged through the outlet line, flows into the suction side of the refrigerant pump, and the liquid refrigerant transferred to the liquid refrigerant transfer line by the pumping operation is divided into equal parts by the main bypass line and transferred.
  • the liquid refrigerant transferred to the above liquid refrigerant transfer line is divided into equal parts by the main bypass line and transferred to the main expansion valve side, and is rapidly expanded into a mist state, flows into the inlet line of the evaporator, performs a heat exchange operation, and then is discharged through the outlet line and flows into the compressor through the inlet line of the compressor. This operation is repeated and circulated.
  • the liquid refrigerant transported through the above liquid refrigerant transport line is divided into equal parts and transported through the main bypass line, and the liquid refrigerant transported through the main bypass line is also divided into equal parts and transported through the auxiliary bypass line, and at this time, the liquid refrigerant divided into equal parts and transported through the auxiliary bypass line is rapidly expanded into a fog state by the auxiliary expansion valve and evaporated through a heat exchange action that takes heat from the liquid refrigerant circulating through the liquid refrigerant circulation passage installed in conjunction with the plate heat exchanger while circulating, and is discharged through the gas refrigerant outlet and circulated to be introduced into the compressor, and the operation of circulating is repeated, while the liquid refrigerant divided into equal parts and transported through the main bypass line and passing through the first auxiliary solenoid valve is cooled through a heat exchange action that takes heat from the fog refrigerant circulating through the fog refrigerant circulation passage while circulating, and is discharged through the liquid refrigerant outlet and transported along the cooling refrigerant transport
  • the refrigeration system of the second embodiment of the present invention is an embodiment using an auxiliary condenser, and comprises a compressor provided in the middle of a refrigerant circulation line configured to form a closed circuit, a main condenser configured to condense and liquefy high-temperature, high-pressure gaseous refrigerant compressed and discharged from the compressor and discharge liquid refrigerant at room temperature, a refrigerant liquid pump installed in a liquid refrigerant transfer line connected to the outlet line of the main condenser, a main solenoid valve connected to the discharge side of the refrigerant liquid pump and controlling the circulation of the liquid refrigerant, a main expansion valve installed between the main solenoid valve and the inlet line of the evaporator to rapidly expand the liquid refrigerant transferred and supplied to the liquid refrigerant transfer line, and an evaporator that absorbs the surrounding heat in the process of evaporating the refrigerant in a mist state rapidly expanded and supplied from the main expansion valve through a heat exchange
  • the main bypass line connected to the liquid refrigerant transfer line connected to the discharge side of the above refrigerant pump is connected to the inlet line of the auxiliary condenser with the auxiliary solenoid valve installed.
  • the liquid refrigerant at room temperature which is condensed and liquefied in the main condenser and discharged through the outlet line, flows into the suction side of the refrigerant liquid pump, and the liquid refrigerant transferred to the liquid refrigerant transfer line by the pumping operation is divided into equal parts and transferred to the main bypass line, and some of the liquid refrigerant transferred to the liquid refrigerant transfer line is transferred to the main expansion valve side, rapidly expanded into a mist state by the main expansion valve, and flows into the inlet line of the evaporator to perform a heat exchange operation while circulating, and then discharged through the outlet line and flows into the compressor, and the operation is repeated to circulate, while some of the liquid refrigerant divided into equal parts in the liquid refrigerant transfer line and transferred to the main bypass line flows into the inlet line of the auxiliary condenser and is condensed and liquefied through the heat exchange operation with the heat exchange medium, and the liquid refrigerant conden
  • the refrigeration system of the third embodiment of the present invention is an embodiment using a liquid heater for a refrigeration device, and comprises a compressor provided in the middle of a refrigerant circulation line configured to form a closed circuit, a main condenser configured to discharge liquid refrigerant at room temperature by condensing and liquefying high-temperature and high-pressure gaseous refrigerant compressed and discharged from the compressor, a refrigerant liquid pump installed in a liquid refrigerant transfer line connected to the outlet line of the main condenser, a main solenoid valve formed on the discharge side of the refrigerant liquid pump to control the circulation of the liquid refrigerant, a main expansion valve installed between the main solenoid valve and the inlet line of the evaporator to rapidly expand the liquid refrigerant transferred and supplied to the liquid refrigerant transfer line, and an evaporator that absorbs the surrounding heat in the process of evaporating the refrigerant in a mist state rapidly expanded and supplied from the main expansion valve through
  • the liquid refrigerant transfer line connected to the discharge side of the above refrigerant pump is connected to the inlet line of the evaporator with the main solenoid valve and the main expansion valve formed in sequence.
  • the main bypass line which is connected to the liquid refrigerant transfer line connected between the discharge side of the above refrigerant pump and the main solenoid valve, is connected to the inlet of the receiver constituting the liquid heat exchanger for the refrigerating device while the auxiliary solenoid valve is installed, and the outlet of the receiver constituting the liquid heat exchanger for the refrigerating device is connected to the suction side of the refrigerant pump by the cooling refrigerant transfer line.
  • the liquid refrigerant that is discharged through the outlet line of the above main condenser and introduced into the suction side of the refrigerant pump and is transferred to the liquid refrigerant transfer line by the pumping operation is divided into equal parts by the main bypass line and transferred, and the liquid refrigerant that is divided into equal parts by the main bypass line and transferred to the liquid refrigerant transfer line is rapidly expanded into a mist state by the main expansion valve and introduced into the evaporator through the inlet line of the evaporator and circulated, evaporated through the heat exchange action with the heat exchange medium and converted into a gaseous state and discharged through the outlet line and introduced into the inlet of a liquid separator constituting a liquid heat generator for a refrigerating device and moves toward the outlet side, and then performs a heat exchange action with the liquid refrigerant at room temperature stored in the liquid receiver and then discharged through the outlet and introduced into the compressor, and the operation is repeated to circulate, while a portion of the liquid refrigerant that is divided
  • It is characterized by being configured to circulate in a state where it is discharged through an outlet, transferred to the suction side of a refrigerant liquid pump along a refrigerant transfer line, mixed with the room temperature liquid refrigerant discharged through the outlet line of the main condenser, and then introduced into the refrigerant liquid pump.
  • the refrigeration system of the fourth embodiment of the present invention is an embodiment using a double-pipe heat exchanger, and comprises a compressor provided in the middle of a refrigerant circulation line configured to form a closed circuit, a main condenser configured to discharge liquid refrigerant at room temperature by condensing and liquefying high-temperature and high-pressure gaseous refrigerant compressed and discharged from the compressor, a refrigerant liquid pump installed in a liquid refrigerant transfer line connected to the outlet line of the main condenser, a main solenoid valve formed on the discharge side of the refrigerant liquid pump to control the circulation of the liquid refrigerant, a main expansion valve installed between the main solenoid valve and the inlet line of the evaporator to rapidly expand the liquid refrigerant transferred and supplied to the liquid refrigerant transfer line, and an evaporator that causes the refrigerant in a mist state rapidly expanded and supplied from the main expansion valve to evaporate through a heat exchange action that takes away heat from a
  • the liquid refrigerant transfer line connected to the discharge side of the above refrigerant pump is connected to the inlet line of the evaporator with the main solenoid valve and the main expansion valve formed in sequence.
  • the liquid refrigerant transfer line connected between the discharge side of the above refrigerant pump and the main solenoid valve is connected with a main bypass line and an auxiliary bypass line spaced apart from each other.
  • the above main bypass line is configured such that the first auxiliary solenoid valve and the auxiliary expansion valve are installed and connected to the inlet of the liquid separator constituting the double-pipe heat exchanger, and the outlet of the liquid separator is connected to the inlet line of the compressor, while the above auxiliary bypass line is configured such that the second auxiliary solenoid valve is installed and connected to the inlet of the receiver constituting the double-pipe heat exchanger, and the outlet of the receiver is connected to the suction side of the refrigerant pump by the refrigerant transfer line.
  • the liquid refrigerant at room temperature which is condensed and liquefied in the main condenser and discharged through the outlet line, flows into the suction side of the refrigerant pump, and the liquid refrigerant transferred to the liquid refrigerant transfer line by the pumping operation is divided and transferred to the main bypass line, the auxiliary bypass line, and the main expansion valve side, and the liquid refrigerant divided and transferred to the main expansion valve side is rapidly expanded into a fog state by the main expansion valve, flows into the inlet line of the evaporator, performs a heat exchange operation, and then is discharged through the outlet line and circulated to be introduced into the compressor, and the liquid refrigerant divided and transferred to the main bypass line is rapidly expanded into a fog state by the auxiliary expansion valve, and the refrigerant in a fog state rapidly expanded in the auxiliary expansion valve flows into the inlet of the liquid separator formed in the double-pipe heat exchanger, and while moving to the outlet side, evaporates through the heat exchange
  • the liquid refrigerant which is divided and transferred by the auxiliary bypass line while being configured to repeat the operation, is cooled to a low temperature by losing heat through heat exchange with the mist-like refrigerant moving inside the liquid separator while being stored by flowing into the inlet of a receiver forming a double-pipe heat exchanger and being discharged through the outlet of the receiver, and the low-temperature liquid refrigerant discharged through the outlet of the receiver is transported to the suction side of the refrigerant liquid pump along the cooling refrigerant transport line and supplied and circulated to the suction side of the refrigerant liquid pump in a mixed state with the liquid refrigerant at room temperature discharged through the outlet line of the main condenser.
  • the refrigeration system of the first embodiment is configured to supply low-temperature liquid refrigerant to the suction side of the refrigerant liquid pump by using a cooling refrigerant transfer line connected to a liquid refrigerant circulation passage installed in parallel to a plate heat exchanger
  • the refrigeration system of the second embodiment is configured to supply liquid refrigerant condensed and liquefied at a low temperature to the suction side of the refrigerant liquid pump by using an auxiliary condenser
  • the refrigeration system of the third embodiment is configured to supply low-temperature liquid refrigerant stored in a liquid receiver of a liquid heat exchanger for a refrigeration device to the suction side of the refrigerant liquid pump
  • the refrigeration system of the fourth embodiment is configured to supply low-temperature liquid refrigerant stored in a liquid receiver of a double-pipe heat exchanger to the suction side of the refrigerant liquid pump, so that even if the pressure of the condenser decreases due to a change in the external temperature, low-temperature
  • Figures 1 and 2 are circuit diagrams of a refrigeration system using a plate heat exchanger.
  • Figures 3 and 4 are circuit diagrams of a refrigeration system using an auxiliary condenser.
  • Figures 5 and 6 are circuit diagrams of a refrigeration system using a liquid heater for a refrigeration device.
  • Figures 7 and 8 are circuit diagrams of a refrigeration system using a double-pipe heat exchanger.
  • Figures 9 to 12 are circuit diagrams of a refrigeration system of the prior art.
  • liquid refrigerant circulation method for supplying and circulating low-temperature refrigerant to the suction side of a refrigerant pump that pressurizes and circulates the refrigerant of a refrigeration system according to the present invention will be described in detail with reference to the attached drawings.
  • FIGS. 1 and 2 are diagrams showing the circuit configuration of the refrigeration system of the first embodiment using a plate heat exchanger.
  • the high-temperature, high-pressure gaseous refrigerant compressed by the compressor (2) provided in the middle of the refrigerant circulation line (10) forming a closed circuit and discharged through the outlet line (21) is introduced into the main condenser (3a) through the inlet line (31) and condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium (air, water, etc.).
  • an external (outdoor) heat exchange medium air, water, etc.
  • the liquid refrigerant at room temperature condensed and liquefied in the main condenser (3a) is discharged through the outlet line (32) and transferred to the liquid refrigerant transfer line (4).
  • the liquid refrigerant transfer line (4) is provided with a refrigerant liquid pump (4a) for pumping the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) and transferring and circulating it in an increased pressure state. there is.
  • liquid refrigerant transfer line (4) connected to the discharge side (42) of the refrigerant pump (4a) is sequentially installed with a main solenoid valve (43) for controlling the transfer of the liquid refrigerant by an opening and closing operation and a main expansion valve (6a) for rapidly expanding the liquid refrigerant, and is connected to the inlet line (81) of the evaporator (8), and the refrigerant in a mist state rapidly expanded in the main expansion valve (6a) flows into the evaporator (8) through the inlet line (81) and circulates, and the refrigerant in a mist state that flows into the evaporator (8) and circulates absorbs the heat of the surroundings in the process of evaporating through a heat exchange action that takes away the heat of the heat exchange medium (air, water, etc.) in the room (meaning the space where the evaporator is installed), and is converted into a low-temperature gaseous state and discharged through the outlet line (82), and flows into the compressor (2) through the inlet
  • the first embodiment of the present invention is characterized in that the liquid refrigerant at room temperature, which is condensed and liquefied in the main condenser (3a), discharged through the outlet line (32) and transferred to the liquid refrigerant transfer line (4), is cooled to a low temperature using a plate heat exchanger (7a) so that the low temperature liquid refrigerant can be supplied to the suction side (41) of the refrigerant pump (4a), thereby enabling a smooth circulation operation for transferring and supplying the liquid refrigerant by the pumping operation of the refrigerant pump (4a).
  • a main bypass line (5a) is connected between the discharge side (42) of the refrigerant liquid pump (4a) for pressurizing and transferring the room temperature liquid refrigerant discharged through the outlet line (32) of the main condenser (3a) by pumping operation and the main solenoid valve (43), and divides a portion of the room temperature liquid refrigerant transferred through the liquid refrigerant transfer line (4) into equal portions and transfers them bypass-transferring them to the plate heat exchanger (7a).
  • an auxiliary bypass line (5b) is connected to the main bypass line (5a), and an auxiliary bypass line (7b) is connected to the auxiliary bypass line (5b) for transferring a portion of the room temperature liquid refrigerant transferred through the main bypass line (5a) bypass-transferring them to the plate heat exchanger (7a).
  • the above main bypass line (5a) is connected to the liquid refrigerant inlet (71) of the liquid refrigerant circulation passage (70a) installed in conjunction with the plate heat exchanger (7a), and the above auxiliary bypass line (5b) is configured to be connected to the gas refrigerant inlet (73) of the mist refrigerant circulation passage (70b) installed in conjunction with the plate heat exchanger (7a).
  • a first auxiliary solenoid valve (51) is installed in the main bypass line (5a), and a second auxiliary solenoid valve (52) and an auxiliary expansion valve (6b) are installed at positions spaced apart at a certain interval in the auxiliary bypass line (5b) connected to the main bypass line (5a).
  • the liquid refrigerant at room temperature transferred to the liquid refrigerant transfer line (4) is not transferred entirely to the main expansion valve (6a) side, but is divided into equal parts and transferred to the main bypass line (5a).
  • the liquid refrigerant at room temperature divided into equal parts and transferred to the main bypass line (5a) flows into the liquid refrigerant inlet (71) of the liquid refrigerant circulation passage (70a) installed in parallel to the plate heat exchanger (7a) and circulates, while the liquid refrigerant divided into equal parts and transferred to the auxiliary bypass line (5b) connected to the main bypass line (5a) rapidly expands into a fog state by the auxiliary expansion valve (6b) and flows into the gas refrigerant inlet (73) of the fog refrigerant circulation passage (70b) installed in parallel to the plate heat exchanger (7a) and circulates.
  • liquid refrigerant circulation passage (70a) installed in parallel to the plate heat exchanger (7a) and
  • the liquid refrigerant and the fog-state refrigerant, which are respectively introduced into the fog refrigerant circulation passage (70b) and circulated, are configured to circulate while performing heat exchange with each other.
  • liquid refrigerant circulating in the liquid refrigerant circulation passage (70a) installed in parallel with the plate heat exchanger (7a) and the fog-state refrigerant circulating in the fog-state refrigerant circulation passage (70b) are configured to circulate while performing heat exchange with each other.
  • the liquid refrigerant circulating in the liquid refrigerant circulation passage (70a) installed in parallel with the plate heat exchanger (7a) is cooled by the heat exchange action in which heat is taken away from the fog-state refrigerant circulating in the fog-state refrigerant circulation passage (70b), whereas the fog-state refrigerant circulating in the fog-state refrigerant circulation passage (70b) is evaporated by the heat exchange action in which heat is taken away from the liquid refrigerant circulating in the liquid refrigerant circulation passage (70a), changes into a gaseous state, and is discharged through the gaseous refrigerant outlet (74) and then introduced into the compressor (2) through the inlet line (22) of the compressor (2), and this operation is repeated.
  • liquid refrigerant flowing into and circulating through the liquid refrigerant circulation passage (70a) installed in conjunction with the plate heat exchanger (7a) is cooled by a heat exchange action in which heat is taken away from the mist-like refrigerant circulating through the mist refrigerant circulation passage (70b) and is discharged and transported through the cooling refrigerant transfer line (9a) connected to the liquid refrigerant outlet (72).
  • the cooling refrigerant transfer line (9a) is connected to the suction side (41) of the refrigerant liquid pump (4a), and a one-way check valve (91) is installed in the cooling refrigerant transfer line (9a) to prevent the liquid refrigerant from flowing backward from the suction side (41) of the refrigerant liquid pump (4a).
  • the cooled liquid refrigerant which is cooled while circulating through the liquid refrigerant circulation passage (70a) of the plate heat exchanger (7a) and discharged through the liquid refrigerant outlet (72), is transferred to the cooling refrigerant transfer line (9a) and supplied to the suction side (41) of the refrigerant liquid pump (4a).
  • the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) is supplied to the suction side (41) of the refrigerant liquid pump (4a).
  • the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) and the cooled liquid refrigerant transferred to the cooling refrigerant transfer line (9a) are mixed at the suction side (41) of the refrigerant liquid pump (4a).
  • the temperature of the liquid refrigerant is lower than that of the liquid refrigerant at room temperature that is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32).
  • the liquid refrigerant at room temperature that is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32) is smoothly transferred to the suction side (41) of the refrigerant pump (4a) that maintains a low temperature, so that the refrigerant pump (4a) can accurately pump and transfer the liquid refrigerant.
  • the refrigeration system (1A) of the first embodiment configured as described above can be configured to filter and collect and remove oil discharged together with high temperature and high pressure gaseous refrigerant through the outlet line (21) of the compressor (2) by installing an oil separator (11) in the refrigerant circulation line (10) between the compressor (2) and the main condenser (3a) as shown in FIG. 2, and also can be configured to configure a receiver (4b) for temporarily storing the liquid refrigerant at room temperature that is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32).
  • the receiver (4b) has a structure in which the outlet line (32) of the main condenser (3a) is connected to the inlet (44) of the receiver (4b), and the suction side (41) of the refrigerant liquid pump (4a) is connected to the outlet (45) of the receiver (4b), so that the liquid refrigerant at room temperature stored in the receiver (4b) is discharged through the refrigerant liquid pump (4a).
  • Each component that can be configured to supply to the suction side (41) and is formed to be connected to the liquid refrigerant transfer line (4) formed to the discharge side (42) of the refrigerant pump (4a) is similar to the first embodiment illustrated in Fig. 1, so a detailed configuration and description will be omitted.
  • FIG. 3 and FIG. 4 are diagrams showing the circuit configuration of a refrigeration system of the second embodiment using an auxiliary condenser.
  • the refrigeration system (1B) of the second embodiment shown in FIG. 3 will be described.
  • high-temperature and high-pressure gaseous refrigerant compressed by a compressor (2) provided in the middle of a refrigerant circulation line (10) forming a closed circuit and discharged through an outlet line (21) is introduced into a main condenser (3a) through an inlet line (31) and condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium (air, water, etc.), and the liquid refrigerant at room temperature condensed and liquefied in the main condenser (3a) is discharged through an outlet line (32) and transferred to a liquid refrigerant transfer line (4).
  • a refrigerant liquid pump (4a) is installed in the liquid refrigerant transfer line (4) to pump and transfer and circulate the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a).
  • the outlet line (32) of the main condenser (3a) is connected to the suction side (41) of the refrigerant pump (4a), and the liquid refrigerant transfer line (4) connected to the discharge side (42) of the refrigerant pump (4a) is configured to be connected to the inlet line (81) of the evaporator (8) in a state in which a main solenoid valve (43) for controlling the transfer of the liquid refrigerant by an opening and closing operation and a main expansion valve (6a) for rapidly expanding the liquid refrigerant are sequentially installed, and the refrigerant in a mist state rapidly expanded in the main expansion valve (6a) is introduced into the evaporator (8) through the inlet line (81) and circulated, absorbing the heat of the surroundings in the process of evaporation through a heat exchange action that takes away the heat of the heat exchange medium (air, water, etc.) in the room (meaning the space where the evaporator is installed), and then converted into a low-temperature gaseous state and discharged
  • the feature of the second embodiment of the present invention is that the liquid refrigerant at room temperature, which is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32) and transferred to the liquid refrigerant transfer line (4), is condensed and liquefied at a low temperature using the auxiliary condenser (3b) so that the low temperature liquid refrigerant can be supplied to the suction side (41) of the refrigerant pump (4a), so that the refrigerant pump (4a) is configured to transfer and supply the low temperature liquid refrigerant through a precise pumping operation.
  • a main bypass line (5a) is connected between the discharge side (42) of the refrigerant pump (4a) for pressurizing and transporting the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) by pumping operation and the main solenoid valve (43) to equally divide a portion of the liquid refrigerant at room temperature transferred through the liquid refrigerant transfer line (4) and transfer it to the auxiliary condenser (3b).
  • main bypass line (5a) is connected to the inlet line (33) of the auxiliary condenser (3b) with the auxiliary solenoid valve (53) installed, and is configured to be connected to the outlet line (34) of the auxiliary condenser (3b) and the suction side (41) of the refrigerant pump (4a) via a cooling refrigerant transfer line (9a).
  • a one-way check valve (91) is installed in the above-mentioned cooling refrigerant transfer line (9a) to prevent reverse flow of the liquid refrigerant at room temperature discharged to the outlet line (32) of the main condenser (3a).
  • the refrigeration system (1B) of the second embodiment can form an oil separator (11) for filtering and removing oil contained in high-temperature and high-pressure gaseous refrigerant compressed by the compressor (2) and discharged through the outlet line (21), as shown in FIG. 4, and can also form a receiver (4b) for temporarily storing liquid refrigerant at room temperature that is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32).
  • the receiver (4b) can be configured with a structure in which the outlet line (32) of the main condenser (3a) is connected to the inlet (44) and the suction side (41) of the refrigerant pump (4a) is connected to the outlet (45).
  • the high-temperature, high-pressure gaseous refrigerant compressed by the compressor (2) and discharged through the outlet line (21) flows into the inlet line (31) of the main condenser (3a) and is condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium, and the room-temperature liquid refrigerant condensed and liquefied in the main condenser (3a) is discharged through the outlet line (32) and sucked into the suction side (41) of the refrigerant liquid pump (4a) and pumped by the operation of the refrigerant liquid pump (4a) to be transferred and supplied to the liquid refrigerant transfer line (4) connected to the discharge side (42).
  • the liquid refrigerant transferred to the liquid refrigerant transfer line (4) is not transferred entirely to the main expansion valve (6a) side, but is divided and transferred to the main bypass line (5a) while being transferred to the liquid refrigerant transfer line (4).
  • the liquid refrigerant transferred to the main expansion valve (6a) side is The liquid refrigerant is rapidly expanded into a mist state by the main expansion valve (6a) and flows into the inlet line (81) of the evaporator (8), and while circulating through the evaporator (8), absorbs the surrounding heat through heat exchange with the heat exchange medium in the room (meaning the space where the evaporator is installed), evaporates, is converted into a low-temperature gaseous state, and is discharged through the outlet line (82) and flows into the compressor (2) through the inlet line (22) of the compressor (2), and this operation is repeated.
  • the liquid refrigerant that is divided and transferred to the main bypass line (5a) connected to the liquid refrigerant transfer line (4) is introduced through the inlet line (33) of the auxiliary condenser (3b), and the liquid refrigerant that is introduced into the inlet line (33) of the auxiliary condenser (3b) is condensed and liquefied through heat exchange with a heat exchange medium outside (meaning the space where the auxiliary condenser is installed), and the liquid refrigerant that is condensed and liquefied in the auxiliary condenser (3b) is discharged through the outlet line (34) and transferred and supplied to the suction side (41) of the refrigerant liquid pump (4a) along the cooling refrigerant transfer line (9a).
  • the suction side (41) of the refrigerant liquid pump (4a) is connected to the outlet line (32) of the main condenser (3a)
  • the room temperature liquid refrigerant that is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32) and the liquid refrigerant that is transferred and supplied to the cooling refrigerant transfer line (9a) are The liquid refrigerant is mixed at the suction side (41) of the refrigerant pump (4a).
  • the liquid refrigerant mixed at the suction side of the refrigerant pump (4a) has a temperature lower than that of the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a).
  • the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) is smoothly sucked and transferred to the suction side (41) of the refrigerant pump (4a) that maintains a low temperature. Accordingly, the refrigerant pump (4a) can precisely pump the liquid refrigerant sucked into the suction side (41) and transfer and supply it to the discharge side (42). Therefore, the liquid refrigerant can be circulated smoothly through the liquid refrigerant transfer line (4).
  • FIGS. 5 and 6 are diagrams showing the circuit configuration of a refrigeration system of the third embodiment using a liquid heater for a refrigeration device.
  • the refrigeration system (1C) of the third embodiment shown in FIG. 5 will be described.
  • the refrigeration system (1C) of the third embodiment described above is a high-temperature, high-pressure gaseous refrigerant that is compressed by a compressor (2) provided in the middle of a refrigerant circulation line (10) forming a closed circuit and discharged through an outlet line (21), and flows into a main condenser (3a) through an inlet line (31) and is condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium (air, water, etc.), and the liquid refrigerant at room temperature that is condensed and liquefied in the main condenser (3a) is discharged through an outlet line (32) and transferred to a liquid refrigerant transfer line (4).
  • a refrigerant liquid pump (4a) is installed in the liquid refrigerant transfer line (4) to pump and transfer and circulate the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a).
  • the outlet line (32) of the main condenser (3a) is connected to the suction side (41) of the refrigerant pump (4a), and the liquid refrigerant transfer line (4) connected to the discharge side (42) of the refrigerant pump (4a) is configured to be connected to the inlet line (81) of the evaporator (8) in a state in which a main solenoid valve (43) for controlling the transfer operation of the liquid refrigerant by opening and closing operation and a main expansion valve (6a) for rapidly expanding the liquid refrigerant are sequentially installed, and the refrigerant in a mist state rapidly expanded in the main expansion valve (6a) is introduced into the evaporator (8) through the inlet line (81) and circulated, absorbing the heat of the surroundings in the process of evaporation through a heat exchange action that takes away the heat of the heat exchange medium (air, water, etc.) in the room (meaning the space where the evaporator is installed), and then converted into a low-temperature gaseous state and discharged
  • the third embodiment of the present invention is characterized in that the liquid refrigerant at room temperature, which is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32) and transferred to the liquid refrigerant transfer line (4), is cooled to a low temperature using a refrigeration device liquid heater (7b) so that the low temperature liquid refrigerant can be supplied to the suction side (41) of the refrigerant liquid pump (4a), thereby allowing the low temperature liquid refrigerant to be sucked into the suction side (41) of the refrigerant liquid pump (4a), so that the pumping operation of the refrigerant liquid pump (4a) is performed precisely, and the circulation operation of the liquid refrigerant is performed smoothly.
  • a main bypass line (5a) is connected between the discharge side (42) of the refrigerant pump (4a) for pressurizing and transporting the room temperature liquid refrigerant discharged through the outlet line (32) of the main condenser (3a) by pumping operation and the main solenoid valve (43) to equally divide a portion of the room temperature liquid refrigerant transported through the liquid refrigerant transport line (4) and transport it by way of the inlet (75a) of the receiver (75) constituting the liquid heater (7b) for the refrigeration device, and an auxiliary solenoid valve (53) is installed in the main bypass line (5a).
  • a cooling refrigerant transfer line (9a) is connected to the outlet (75b) of the receiver (75) constituting the refrigerant heater (7b) for the above-mentioned refrigerating device and the suction side (41) of the refrigerant pump (4a), and a one-way check valve (91) is installed in the cooling refrigerant transfer line (9a) to prevent the liquid refrigerant at room temperature discharged to the outlet line (32) of the main condenser (3a) from flowing backward.
  • a liquid separator (76) is inserted and installed inside the liquid receiver (75) that constitutes the liquid heater (7b) for the above-mentioned refrigerating device, and the liquid separator (76) is configured in a structure in which the outlet line (82) of the evaporator (8) is connected to the inlet (76a) of the liquid separator (76), and the outlet (76b) of the liquid separator (76) is configured in such a way that the inlet line (22) of the compressor (2) is connected.
  • the refrigeration system (1C) of the third embodiment configured as described above is configured such that the high-temperature, high-pressure gaseous refrigerant compressed and discharged from the compressor (2) flows into the main condenser (3a), and the liquid refrigerant at room temperature, which is condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium, is discharged through the outlet line (32) and sucked into the suction side (41) of the refrigerant liquid pump (4a) installed in the liquid refrigerant transfer line (4), and the liquid refrigerant at room temperature sucked into the suction side (41) of the refrigerant liquid pump (4a) is pumped by the operation of the refrigerant liquid pump (4a) and transferred to the liquid refrigerant transfer line (4) to which the discharge side (42) is connected.
  • liquid refrigerant at room temperature transferred to the discharge side (42) of the refrigerant liquid pump (4a) is not transferred entirely to the main expansion valve (6a) side, but some of it is transferred to the main bypass line (5a) connected to the liquid refrigerant transfer line (4). It becomes a state.
  • some of the liquid refrigerant transferred to the main expansion valve (6a) through the liquid refrigerant transfer line (4) is rapidly expanded into a mist state at the main expansion valve (6a), flows into the evaporator (8) through the inlet line (81) of the evaporator, and while circulating, takes away heat through a heat exchange action with a heat exchange medium indoors (meaning the space where the evaporator is installed), evaporates, changes into a low-temperature gaseous state, and is discharged through the outlet line (82) and flows into the inlet (76a) of the liquid separator (76) constituting the liquid heater (7b) for the refrigeration device.
  • a heat exchange medium indoors meaning the space where the evaporator is installed
  • the low-temperature gaseous refrigerant that flows into the inlet (76a) of the liquid separator (76) performs a heat exchange action that takes away heat from the liquid refrigerant stored in the receiver (75) while moving toward the outlet (76b), evaporates, is discharged through the outlet (76b), and flows into the compressor (2) through the inlet line (22) of the compressor, and this operation is repeated.
  • liquid refrigerant transferred to the liquid refrigerant transfer line (4) is divided into equal parts and transferred to the main bypass line (5a) and is stored by flowing in through the inlet (75a) of the receiver (75) constituting the liquid heater (7b) for the refrigeration device.
  • the liquid refrigerant stored in the receiver (75) thus loses heat from the low-temperature gas refrigerant that flows into the inlet (76a) of the liquid separator (76) and is transferred to the outlet (76b) side, thereby being cooled to a low temperature.
  • the liquid refrigerant discharged through the outlet (75b) of the receiver (75) is transferred along the cooling refrigerant transfer line (9a) in a state of being cooled to a low temperature and supplied to the suction side (41) of the refrigerant liquid pump (4a).
  • the liquid refrigerant at room temperature that is condensed and liquefied in the main condenser (3a) is supplied to the suction side (41) of the refrigerant liquid pump (4a).
  • the low-temperature liquid refrigerant transferred and supplied through the cooling refrigerant transfer line (9a) is configured to be mixed with the room-temperature liquid refrigerant discharged through the outlet line (32) of the main condenser (3a) and sucked into the suction side (41) of the refrigerant liquid pump (4a) so that it can be introduced into the refrigerant liquid pump (4a).
  • the refrigeration system (1C) of the third embodiment can additionally configure an oil separator (11) between the outlet line (21) of the compressor (2) and the inlet line (31) of the main condenser (3a), as shown in FIG. 6, and can additionally configure a receiver (4b) for temporarily storing liquid refrigerant at room temperature between the outlet line (32) of the main condenser (3a) and the suction side (41) of the refrigerant pump (4a).
  • FIGS. 7 and 8 are diagrams showing the circuit configuration of a refrigeration system of the fourth embodiment using a double-pipe heat exchanger.
  • the refrigeration system (1D) of the fourth embodiment shown in FIG. 7 will be described.
  • the refrigeration system (1D) of the fourth embodiment described above is configured such that high-temperature, high-pressure gaseous refrigerant compressed by a compressor (2) provided in the middle of a refrigerant circulation line (10) forming a closed circuit and discharged through an outlet line (21) is introduced into a main condenser (3a) through an inlet line (31) and condensed and liquefied through heat exchange with an external (outdoor) heat exchange medium (air, water, etc.), and the liquid refrigerant at room temperature condensed and liquefied in the main condenser (3a) is discharged through an outlet line (32) and transferred to a liquid refrigerant transfer line (4).
  • a refrigerant liquid pump (4a) is installed in the liquid refrigerant transfer line (4) to pump and transfer and circulate the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) by increasing its pressure.
  • the outlet line (32) of the main condenser (3a) is connected to the suction side (41) of the refrigerant pump (4a), and the liquid refrigerant transfer line (4) connected to the discharge side (42) of the refrigerant pump (4a) is configured with a structure in which a main solenoid valve (43) for opening and closing the transfer operation of the liquid refrigerant and a main expansion valve (6a) for rapidly expanding the liquid refrigerant are sequentially installed and connected to the inlet line (81) of the evaporator (8), and the refrigerant in a mist state rapidly expanded in the main expansion valve (6a) is introduced into the evaporator (8) through the inlet line (81) and circulated, absorbing the heat of the surroundings in the process of evaporation through a heat exchange action that takes away the heat of the heat exchange medium (air, water, etc.) in the room (meaning the space where the evaporator is installed), and then converted into a low-temperature gaseous state and discharged through the outlet line
  • the fourth embodiment of the present invention is characterized in that the liquid refrigerant at room temperature, which is condensed and liquefied in the main condenser (3a) and discharged through the outlet line (32) and transferred to the liquid refrigerant transfer line (4), is cooled to a low temperature using a double-pipe heat exchanger (7c) so that the liquid refrigerant at low temperature can be supplied to the suction side (41) of the refrigerant liquid pump (4a), thereby enabling the liquid refrigerant at low temperature to be transferred and supplied to the suction side (41) of the refrigerant liquid pump (4a), thereby enabling the circulation operation of the liquid refrigerant to be smoothly performed by the pumping operation of the refrigerant liquid pump (4a).
  • a main bypass line (5a) and an auxiliary bypass line (5b) are connected between the discharge side (42) of the refrigerant liquid pump (4a) for pumping and pressurizing the room temperature liquid refrigerant discharged through the outlet line (32) of the main condenser (3a) and the main solenoid valve (43) so that the room temperature liquid refrigerant transferred through the liquid refrigerant transfer line (4) can be equally divided and transferred to the receiver (77) and the liquid separator (78) constituting the double-pipe heat exchanger (7c).
  • the above double-pipe heat exchanger (7c) is configured as a single unit with a double-pipe structure in which a receiver (77) storing liquid refrigerant and a liquid separator (78) formed to penetrate the receiver (77) in the longitudinal direction and storing gaseous refrigerant are inserted and installed inside the receiver (77).
  • the above main bypass line (5a) is configured to be connected to the inlet (78a) of the liquid separator (78) constituting the double-pipe heat exchanger (7c) in a state in which the first auxiliary solenoid valve (54) and the auxiliary expansion valve (6b) are each installed, and the above auxiliary bypass line (5b) is configured to be connected to the inlet (77a) of the liquid receiver (77) constituting the double-pipe heat exchanger (7c) in a state in which the second auxiliary solenoid valve (55) is installed.
  • the outlet (77b) of the receiver (77) constituting the double-pipe heat exchanger (7c) and the suction side (41) of the refrigerant pump (4a) are connected to a cooling refrigerant transfer line (9a), and a one-way check valve (91) is installed in the cooling refrigerant transfer line (9a) to prevent the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) from flowing back into the cooling refrigerant transfer line (9a).
  • the refrigeration system (1D) of the fourth embodiment configured as described above When the refrigeration system (1D) of the fourth embodiment configured as described above is operated, the high temperature and high pressure gaseous refrigerant compressed in the compressor (2) and discharged through the outlet line (21) flows into the inlet line (31) of the main condenser (3a), and the high temperature and high pressure gaseous refrigerant flowing into the main condenser (3a) is condensed and liquefied through heat exchange with a heat exchange medium and discharged through the outlet line (32), sucked into the suction side (41) of the refrigerant liquid pump (4a), discharged through the discharge side (42) by pumping operation, and transferred to the liquid refrigerant transfer line (4) while being divided into equal parts and transferred to the main bypass line (5a).
  • the liquid refrigerant transferred to the liquid refrigerant transfer line (4) is not transferred entirely to the main expansion valve (6a), but rather, some of the divided liquid refrigerant is transferred to the main bypass line (5a), while not transferred to the main bypass line (5a) but to the main expansion valve (6a).
  • the liquid refrigerant being transported rapidly expands into a mist state through the main expansion valve (6a) and flows into the inlet line (81) of the evaporator (8), and in the process of performing a heat exchange operation with the heat exchange medium in the room where the evaporator (81) is installed, absorbs heat and evaporates, converting into a low-temperature gaseous state and being discharged through the outlet line (82).
  • the refrigerant that is converted into a low-temperature gaseous state while circulating through the evaporator (8) and discharged through the outlet line (82) is repeated by flowing into the compressor (2) through the inlet line (22) of the compressor (2).
  • the liquid refrigerant which is divided into equal parts and transferred to the main bypass line (5a) and the auxiliary bypass line (5b) connected to the liquid refrigerant transfer line (4), is transferred to the liquid separator (78) and receiver (77) constituting the double-pipe heat exchanger (7c).
  • the liquid refrigerant which is divided into equal parts and transferred to the main bypass line (5a)
  • the auxiliary expansion valve (6b) The refrigerant in a mist state is introduced into the inlet (78a) of the liquid separator (78) and moves toward the outlet (78b), where it evaporates by a heat exchange action that takes heat from the liquid refrigerant stored in the receiver (77) and is discharged through the outlet (78b).
  • the evaporated refrigerant discharged through the outlet (78b) of the liquid separator (78) constituting the double-pipe heat exchanger (7c) is mixed with the gaseous refrigerant discharged through the outlet line (82) of the evaporator (8) and is discharged through the compressor (2).
  • the liquid refrigerant that flows into the compressor (2) through the inlet line (22) and is divided and transferred to the auxiliary bypass line (5b) flows into the inlet (77a) of the receiver (77) constituting the double-pipe heat exchanger (7c) and is stored in the receiver (77).
  • the liquid refrigerant that is stored in the receiver (77) flows into the inlet (78a) of the liquid separator (78) installed in a state of penetrating the receiver (77) and is cooled to a low temperature by a heat exchange action in which heat is taken from the refrigerant in a mist state moving toward the outlet (78b), and is discharged through the outlet (77b) and transferred to the cooling refrigerant transfer line (9a) and transferred and supplied to the suction side (41) of the refrigerant liquid pump (4a).
  • the suction side (41) of the refrigerant liquid pump (4a) is connected to the outlet line (32) of the main condenser (3a) and the cooling refrigerant transfer line (9a), the liquid refrigerant at room temperature, which is condensed and liquefied in the main condenser (3a) and discharged through the discharge line (32), and the liquid refrigerant at low temperature, which is discharged through the receiver outlet (77b) of the double-pipe heat exchanger (7c), are mixed at the suction side (41) of the refrigerant liquid pump (4a), and accordingly, the temperature of the liquid refrigerant mixed at the suction side (41) of the refrigerant liquid pump (4a) is maintained at a lower temperature than the liquid refrigerant at room temperature discharged from the outlet line (32) of the main condenser (3a), and the liquid refrigerant at room temperature discharged through the outlet line (32) of the main condenser (3a) is quickly sucked into the suction side (41) of the refriger
  • the refrigeration system (1A to 1D) of the first to fourth embodiments of the present invention configured as described above can transfer and supply liquid refrigerant having a lower temperature than the room temperature liquid refrigerant discharged through the outlet line (32) of the main condenser (3a) to the suction side (41) of the refrigerant liquid pump (4a) even when the internal pressure of the main condenser (3a) is lowered due to a temperature change in which the external temperature rapidly decreases during operation, so that the low temperature liquid refrigerant can be quickly sucked into the suction side (41) of the refrigerant liquid pump (4a), and thus the refrigerant liquid pump (4a) provides the effect of precisely pumping the liquid refrigerant and supplying it to the liquid refrigerant transfer line (4), thereby improving the circulation operation of the liquid refrigerant.
  • Refrigeration system 10 Refrigerant circulation line
  • Oil separator 2 Compressor

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Abstract

La présente invention concerne un procédé de circulation de fluide frigorigène permettant l'alimentation en et la circulation d0un fluide frigorigène à basse température dans le côté aspiration d'une pompe à fluide frigorigène d'un système de congélation, le système de congélation étant conçu pour alimenter le côté aspiration de la pompe à fluide frigorigène en fluide frigorigène à basse température afin de faire circuler un fluide frigorigène dans un état dans lequel la pression du fluide frigorigène a été augmentée, le fluide frigorigène étant évacué vers le côté sortie d'un condenseur pour condenser et liquéfier un fluide frigorigène gazeux à haute température et haute pression, qui est évacué après avoir été comprimé dans un compresseur disposé dans une conduite de circulation de fluide frigorigène conçue pour avoir une forme de circuit fermé de sorte que le fluide frigorigène évacué du condenseur peut circuler efficacement vers le côté d'un évaporateur.
PCT/KR2024/001774 2023-04-11 2024-02-06 Procédé de circulation de fluide frigorigène d'alimentation et de circulation d'un fluide frigorigène à basse température dans un côté aspiration d'une pompe à fluide frigorigène pour faire circuler, avec une pression accrue, un fluide frigorigène de système de congélation Pending WO2024214937A1 (fr)

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KR102618118B1 (ko) * 2023-04-11 2023-12-27 (주)하이세이브아시아 냉동시스템의 냉매를 증압 순환시키는 냉매액 펌프의 흡입측에 낮은 온도의 냉매를 공급 순환시키기 위한 액상냉매 순환방법
KR20250114589A (ko) 2024-01-22 2025-07-29 (주)하이세이브아시아 응축기에서 응축 액화되어 수액기에 저장되는 상온의 냉매액보다 더 낮은 저온의 냉매액을 수액기에 저장하도록 구성된 냉동사이클 및 냉동사이클의 수액기에 응축기에서 응축 액화되는 상온의 냉매액보다 낮은 저온의 냉매액을 저장하기 위한 냉매저장방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4084915B2 (ja) * 2000-02-18 2008-04-30 株式会社東洋製作所 冷凍システム
JP5049889B2 (ja) * 2008-06-10 2012-10-17 日立アプライアンス株式会社 冷凍装置
KR101585943B1 (ko) * 2010-02-08 2016-01-18 삼성전자 주식회사 공기조화기 및 그 제어방법
JP2018173260A (ja) * 2017-03-31 2018-11-08 ミツビシ・エレクトリック・アールアンドディー・センター・ヨーロッパ・ビーヴィＭｉｔｓｕｂｉｓｈｉ Ｅｌｅｃｔｒｉｃ Ｒ＆Ｄ Ｃｅｎｔｒｅ Ｅｕｒｏｐｅ Ｂ．Ｖ． 暖房および／または冷房用の循環システムならびに暖房および／または冷房運転方法
KR102350303B1 (ko) * 2021-08-10 2022-01-17 김봉석 냉동싸이클 시스템
KR102618118B1 (ko) * 2023-04-11 2023-12-27 (주)하이세이브아시아 냉동시스템의 냉매를 증압 순환시키는 냉매액 펌프의 흡입측에 낮은 온도의 냉매를 공급 순환시키기 위한 액상냉매 순환방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7038869B2 (en) 2003-04-14 2006-05-02 Matsushita Electric Industrial Co., Ltd. Recording control apparatus, recording and reproduction apparatus, and recording control method
KR100666920B1 (ko) 2004-08-30 2007-01-11 김봉석 냉동장치의 액열기
KR101355431B1 (ko) 2012-02-14 2014-01-27 김봉석 냉동장치용 액열기
KR102477314B1 (ko) 2022-06-15 2022-12-14 (주)하이세이브아시아 냉동싸이클 시스템의 수액기 냉매액 온도저감 방법 및 증발기 냉각성능 개선방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4084915B2 (ja) * 2000-02-18 2008-04-30 株式会社東洋製作所 冷凍システム
JP5049889B2 (ja) * 2008-06-10 2012-10-17 日立アプライアンス株式会社 冷凍装置
KR101585943B1 (ko) * 2010-02-08 2016-01-18 삼성전자 주식회사 공기조화기 및 그 제어방법
JP2018173260A (ja) * 2017-03-31 2018-11-08 ミツビシ・エレクトリック・アールアンドディー・センター・ヨーロッパ・ビーヴィＭｉｔｓｕｂｉｓｈｉ Ｅｌｅｃｔｒｉｃ Ｒ＆Ｄ Ｃｅｎｔｒｅ Ｅｕｒｏｐｅ Ｂ．Ｖ． 暖房および／または冷房用の循環システムならびに暖房および／または冷房運転方法
KR102350303B1 (ko) * 2021-08-10 2022-01-17 김봉석 냉동싸이클 시스템
KR102618118B1 (ko) * 2023-04-11 2023-12-27 (주)하이세이브아시아 냉동시스템의 냉매를 증압 순환시키는 냉매액 펌프의 흡입측에 낮은 온도의 냉매를 공급 순환시키기 위한 액상냉매 순환방법

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