WO2019245096A1 - Système de refroidissement complexe à capacité de dégivrage efficace - Google Patents

Système de refroidissement complexe à capacité de dégivrage efficace Download PDF

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Publication number
WO2019245096A1
WO2019245096A1 PCT/KR2018/007452 KR2018007452W WO2019245096A1 WO 2019245096 A1 WO2019245096 A1 WO 2019245096A1 KR 2018007452 W KR2018007452 W KR 2018007452W WO 2019245096 A1 WO2019245096 A1 WO 2019245096A1
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Prior art keywords
pipe
gas
refrigerant
evaporation
liquid
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PCT/KR2018/007452
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English (en)
Korean (ko)
Inventor
이동건
Original Assignee
티이컴퍼니 유한회사
이동건
큐익 프라이비트 리미티드
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Publication of WO2019245096A1 publication Critical patent/WO2019245096A1/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
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • F25B43/043—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases for compression type 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel

Definitions

  • the present invention relates to a cooling system for cooling a distribution warehouse for refrigeration and cold storage, and more particularly, to a complex cooling system capable of efficiently performing a defrosting operation.
  • a defrosting operation of a general warehouse storage system for a freezer and cold storage warehouse will be described with reference to FIG. 1.
  • the gas-liquid separator 10 stores a refrigerant in a gaseous state at an upper portion thereof and a liquid refrigerant in an inner lower portion thereof.
  • the gas-liquid separator 10 is connected to the evaporator 20 and the condenser 30, respectively.
  • the evaporator 20 receives the liquid refrigerant in the liquid state of the gas-liquid separator 10 and evaporates it to a gas state, and then recovers the gas-liquid separator 10.
  • the evaporator 20 supplies a liquid refrigerant to the evaporator 21 including the evaporator tube 21a and the blower 21b and the vaporizer 21 from the gas-liquid separator 10 to the evaporator tube 21a of the evaporator 21.
  • liquid refrigerant supply pipe 22 is provided with an on-off valve 22b for blocking the supply of the refrigerant to the evaporator 21.
  • the condensation unit 30 receives the refrigerant in the gaseous state of the gas-liquid separator 10 to condense it into a liquid state and recovers the gas-liquid separator 10.
  • the condenser 30 includes a condenser 31 in the form of various heat exchangers, a gas refrigerant supply pipe 32 for supplying a gaseous refrigerant from the gas-liquid separator 10 to the condenser 31, and a condenser. And a liquid refrigerant recovery pipe 33 for recovering the liquid refrigerant in the liquid state in which the gaseous refrigerant is condensed in the gas-liquid separator 10 at 31.
  • the condenser 30 may compress the low-pressure gas refrigerant into a high-pressure gas refrigerant by a compressor and then condense it, or may directly condense the gas refrigerant into the liquid refrigerant without a compression process.
  • a dropping phenomenon occurs in which frost or ice occurs during the evaporation of the liquid refrigerant, and the defrosting operation is intermittently performed to remove the dropping to increase the evaporation efficiency or cooling efficiency. need.
  • defrosting means are provided in the evaporator 21.
  • the defrosting means includes a defrost water storage tank 41 in which defrost water is stored, and a defrost water sprinkling pipe 21c provided on an upper portion of the evaporator 21 to spray defrost water on the surface of the evaporation pipe 21a.
  • Defrosting means in addition to such a water spray, a variety of ways are widely known.
  • Normal defrosting is carried out once or twice a day.
  • the drive of the liquid refrigerant transfer pump 22a is stopped for the defrosting operation, and the liquid refrigerant supply to the evaporation tube 21a is stopped while the opening / closing valve 22b is closed.
  • the defrosting water supply pump 42a is driven to start the defrosting operation.
  • the defrosting operation the most time is taken for evaporation of the liquid refrigerant remaining in the evaporation tube 21a. That is, it takes more time to prepare for the defrosting operation than the direct defrosting time. In addition, as the blower 21b is driven for such a long time, power is wasted.
  • the present invention has been made in order to solve the problems of the prior art as described above, when the defrosting operation of the evaporator is required to recover the remaining liquid refrigerant of the evaporator defrosting operation to the gas-liquid separator, without directly evaporating the liquid refrigerant, or defrosting operation
  • the remaining liquid refrigerant of this evaporator is discharged to another evaporator to provide a combined cooling system that can minimize the time and expense of defrosting operation.
  • the present invention is a gas-liquid separator in which a gaseous refrigerant is stored in the upper part of the inside and a liquid refrigerant is stored in the lower part of the inside, and a liquid refrigerant of the gas-liquid separator is supplied and evaporated in the gaseous state.
  • a first evaporation unit to recover the gas-liquid separator a second evaporation unit to receive the liquid refrigerant of the gas-liquid separator, evaporate to a gaseous state, and to recover the gas-liquid separator, and a gaseous state of the gas-liquid separator.
  • a cooling system comprising a condensation unit for receiving a refrigerant to condense to a liquid state and then recovered to the gas-liquid separator:
  • the first evaporator includes: a first liquid refrigerant supply pipe having one end communicating with a lower portion of the gas liquid separator and the other end extending upward of the gas liquid separator; a liquid refrigerant transfer pump provided at the first liquid refrigerant supply pipe; A first gas refrigerant recovery tube communicating with an upper portion of the gas-liquid separator and extending from the other end to the upper side of the gas-liquid separator, and a first evaporation tube and a first blower, are disposed at a higher position than the gas-liquid separator.
  • first defrosting means for removing frost or ice generated on the surface of the first evaporation pipe, and the upper end of the first evaporation pipe and the first gas refrigerant recovery pipe
  • the first evaporation pipe for the first evaporation pipe provided for each of the first evaporation pipe gas refrigerant outlet pipe, and the lower end of the first evaporation pipe and the first liquid refrigerant supply pipe
  • the liquid eluent inlet pipe for the first evaporator tube, the opening and closing valve for the first evaporator tube provided for each of the liquid refrigerant inlet pipe for the first evaporator tube, and the upper end between the opening and closing valve for the first evaporator tube and the first evaporator tube
  • a first defrost refrigerant discharge pipe connected to the first liquid refrigerant inflow pipe for the first evaporation pipe and provided at each of the first liquid refrigerant inflow pipes for the first evaporation pipe so
  • the second evaporator includes a second liquid refrigerant supply pipe having one end communicating with a lower portion of the gas-liquid separator and the other end extending downward of the gas-liquid separator, and one end communicating with an upper portion of the gas-liquid separator and the other end of the gas-liquid separator.
  • a plurality of second evaporators including a second gas refrigerant recovery tube extending downward, a second evaporator tube and a second blower and disposed at a lower position than the gas-liquid separator, and a surface of the second evaporator tube.
  • Second defrosting means for removing frost or ice generated, and a gas refrigerant outlet pipe for the second evaporation pipe provided for each of the second evaporation pipe to connect the upper end of the second evaporation pipe and the second gas refrigerant recovery pipe. And a liquid refrigerant inflow pipe for the second evaporation pipe provided for each of the second evaporation pipes so as to connect the lower end of the second evaporation pipe and the second liquid refrigerant supply pipe with each other, and the second evaporation pipe.
  • On and off valves for the second evaporation tube provided for each liquid refrigerant inlet pipe, and the upper end is connected to the liquid refrigerant inlet pipe for the second evaporation pipe between the on-off valve for the second evaporation pipe and the second evaporation pipe, the lower end of the second evaporation At least one second defrost refrigerant discharge pipe connected to the second refrigerant pipe opening and closing valve for the second evaporation pipe connected to the second evaporation pipe disposed in the lower position than the second evaporation pipe and the liquid refrigerant inlet pipe for the second evaporation pipe And a second refrigerant discharge opening / closing valve provided for each of the second defrost refrigerant discharge tubes; It is characterized by.
  • the liquid refrigerant is recovered to the gas-liquid separator without directly evaporating the liquid refrigerant, or the remaining liquid refrigerant of the evaporator requiring defrosting operation is discharged to another evaporator. Minimize time and expense.
  • the present invention can increase the constant temperature of the internal temperature of the refrigerator and the cold storage warehouse by minimizing the downtime of the warehouse cooling system according to the defrosting operation.
  • FIG. 1 is a conceptual diagram of a warehouse cooling system for a frozen and refrigerated warehouse according to the prior art
  • FIG. 2 is a conceptual diagram of a distribution warehouse cooling system for a freezer and cold storage according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a refrigerant during defrosting operation in FIG. 2.
  • FIG. 2 is a conceptual diagram of a distribution warehouse cooling system for a freezer and cold storage warehouse according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a refrigerant during defrosting operation in FIG. 2.
  • the gas-liquid separator 110 stores a refrigerant in a gaseous state at an upper portion thereof and a liquid refrigerant in an inner lower portion thereof.
  • the gas-liquid separator 110 is connected to the first evaporator 120, the second evaporator 130, and the condenser 140, respectively.
  • the first evaporator 120 and the second evaporator 130 are intended to recover the gas-liquid separator 110 after being evaporated in a gaseous state by receiving a liquid refrigerant in the gas-liquid separator 110.
  • the condensation unit 140 receives the gaseous refrigerant of the gas-liquid separator 110 to condense it into a liquid state and recovers the gas-liquid separator 110.
  • the first evaporator 120 includes a first liquid refrigerant supply pipe 121, a liquid refrigerant transfer pump 121a, a first gas refrigerant recovery pipe 122, and a plurality of first evaporators 123-1 to 3. And a plurality of first gaseous coolant outlet pipes 124 for the first evaporation pipe, a plurality of first liquid evaporation pipe inlets 125 for the first evaporation pipe, a plurality of open / close valves 125a for the first evaporation pipe, and a plurality of first evaporation pipes.
  • the pipe flow control valve 125b, a plurality of first defrost refrigerant discharge tubes 126, and a plurality of first refrigerant discharge open / close valves 126a are included.
  • the first liquid refrigerant supply pipe 121 has a form in which one end communicates with the lower portion of the gas-liquid separator 110 and the other end extends upwardly of the gas-liquid separator 110.
  • a liquid refrigerant transfer pump 121a is provided in the first liquid refrigerant supply pipe 121 to forcibly circulate the liquid refrigerant of the gas-liquid separator 110. That is, the first evaporator 120 is a liquid pump type cooling system that requires a separate forced conveying means such as a pump for supplying a liquid refrigerant.
  • a first gas refrigerant recovery pipe 122 is provided to correspond to the first liquid refrigerant supply pipe 121, and one end of the first gas refrigerant recovery pipe 122 communicates with an upper portion of the gas liquid separator 110, and the other end thereof is a gas liquid separator. It is a form extended toward the upper direction of the (110).
  • a plurality of first evaporators 123-1, 123-2, and 123-3 connected to the first liquid refrigerant supply pipe 121 and the first gas refrigerant recovery pipe 122 are provided.
  • the first evaporators 123-2 and 123-3 are disposed at a position higher than the gas-liquid separator 110, and the first evaporators 123-1 are disposed at the same height as the gas-liquid separator 110.
  • Each of the first evaporators 123-1, 123-2, and 123-3 forcibly supplies air to the surfaces of the first evaporation tube 123a and the first evaporation tube 123a where the liquid refrigerant is evaporated into the gaseous refrigerant. It comprises a first blower (123b).
  • Each of the first evaporators 123-1, 123-2, and 123-3 is provided in a freezer and a refrigerated warehouse to maintain a high temperature in the high temperature.
  • each of the first evaporators (123-1, 123-2, 123-3) is provided with a first defrosting means (not shown) for removing frost or ice generated on the surface of the first evaporation pipe (123a).
  • the first defrosting means various methods known in the art, such as a watering method and a heater method, may be adopted.
  • the first evaporator 123a of each of the first evaporators 123-1, 123-2, and 123-3 has an upper end thereof recovered through the gas refrigerant outlet pipe 124 for the first evaporator. It is connected to the pipe 122, the lower end is connected to the first liquid refrigerant supply pipe 121 through the liquid refrigerant inlet pipe 125 for the first evaporation pipe.
  • the first evaporator 123a of each of the first evaporators 123-1, 123-2, and 123-3 is a gas refrigerant outlet pipe 124 for the first evaporator and a liquid refrigerant inlet pipe 125 for the first evaporator.
  • Each of the first refrigerant evaporating pipe liquid refrigerant inlet pipe 125 is provided with a first evaporating tube opening and closing valve 125a and a first evaporating pipe flow control valve 125b.
  • Each of the first evaporator flow rate control valve 125b serves to adjust an appropriate amount of liquid refrigerant into the first evaporator 123a of each of the first evaporators 123-1, 123-2, and 123-3. After setting to a predetermined flow rate at the time of initial installation, the refrigerant flows at a preset flow rate during normal operation.
  • the first defrosting refrigerant discharge pipe 126 is provided for each of the liquid refrigerant inflow pipes 125 for the first evaporation pipes connected to the first evaporators 123-2 and 123-3 disposed at a position higher than the gas-liquid separator 110. Connected.
  • the first refrigerant refrigerant discharge pipe for defrosting is not provided in the liquid refrigerant inlet pipe 125 for the first evaporator pipe connected to the first evaporator 123-1 disposed at the same height as the gas-liquid separator 110.
  • the first defrosting refrigerant discharge pipe 126 has an upper end connected to the liquid refrigerant inlet pipe 125 for the first evaporation pipe between the on-off valve 125a for the first evaporation pipe and the first evaporation pipe 123a, and the lower end of the first defrost refrigerant discharge pipe 126. It is connected to the one gas refrigerant recovery pipe 122.
  • a first refrigerant discharge opening / closing valve 126a is provided for each of the first defrost refrigerant discharge tubes 126.
  • first liquid refrigerant supply pipe 121 and the first gas refrigerant recovery pipe 122 are connected to each other by a bypass pipe portion, and the first liquid refrigerant supply pipe 121 is connected to the first liquid refrigerant supply pipe 121 in the first liquid refrigerant supply pipe 121.
  • the liquid refrigerant bypass flow rate adjusting unit is provided to adjust the flow rate of the liquid refrigerant bypassed to the gas refrigerant recovery pipe 122.
  • the plurality of bypass pipes 127-2 and 127-3 having one end connected to the first liquid refrigerant supply pipe 121 and the other end connected to the first gas refrigerant recovery pipe 122.
  • the liquid refrigerant bypass flow rate adjusting unit is a bypass opening / closing valve 127a provided for each of the plurality of bypass pipes 127-2 and 127-3.
  • the bypass opening / closing valve 127a provided for each of the plurality of bypass pipes 127-2 and 127-3 is provided for each of the first evaporation pipes 123a of the plurality of first evaporators 123-2 and 123-3. It operates in response to the operation of the opening / closing valve 125a for the first evaporation pipe.
  • two bypass opening / closing valves 127a are provided corresponding to the two first evaporators 123-2 and 123-3.
  • the second evaporator 130 includes a second liquid refrigerant supply pipe 131, a second gas refrigerant recovery pipe 132, a plurality of second evaporators 133-1 to 2, and a plurality of gases for the second evaporation pipe.
  • the second liquid refrigerant supply pipe 131 communicates with the lower part of the gas-liquid separator 110, and the other end thereof extends downwardly of the gas-liquid separator 110. Therefore, the liquid refrigerant stored in the gas-liquid separator 110 flows downward along the second liquid refrigerant supply pipe 131 by gravity (water head or siphon phenomenon). That is, the second evaporation unit 130 is a siphonic cooling system that does not require a separate forcible transfer means such as a pump for supplying the liquid refrigerant.
  • the second gas refrigerant recovery pipe 132 is provided to correspond to the second liquid refrigerant supply pipe 131, and one end of the second gas refrigerant recovery pipe 132 communicates with the upper portion of the gas liquid separator 110, and the other end thereof is the gas liquid separator. It extends toward the bottom of the (110).
  • one end of the second gas coolant recovery pipe 132 is branched from one end of the first gas coolant recovery pipe 132, but this is a conventional technique that can be appropriately designed by a person skilled in the art.
  • a plurality of second evaporators 133-1 and 133-2 connected to the second liquid refrigerant supply pipe 131 and the second gas refrigerant recovery pipe 132 are provided.
  • each of the second evaporators 133-1 and 133-2 is disposed at a lower position than the gas-liquid separator 110. This is to allow the liquid refrigerant of the gas-liquid separator 110 to be supplied to each of the second evaporators 133-1 and 133-2 via the second liquid refrigerant supply pipe 131.
  • each of the second evaporators 133-1 and 133-2 is located at different heights, and the second evaporator 133-1 is positioned at the lowest position. 133-2) is shown to be located at the highest position.
  • Each of the second evaporators 133-1 and 133-2 forcibly supplies air to the surfaces of the second evaporation tube 133a and the second evaporation tube 133a where the liquid refrigerant is evaporated into the gaseous refrigerant. 133b.
  • Each of these second evaporators (133-1, 133-2) is provided in the refrigeration and refrigerated warehouse to keep the temperature in the high temperature at low temperatures.
  • each of the second evaporators 133-1 and 133-2 is provided with a second defrosting means (not shown) for removing frost or ice generated on the surface of the second evaporation pipe 133a.
  • the second defrosting means is substantially the same as the first defrosting means, only with a different name.
  • the second evaporation pipe 133a of each of the second evaporators 133-1 and 133-2 has a second gas refrigerant recovery pipe 132 having an upper end thereof via a gas coolant outlet pipe 134 for the second evaporation pipe.
  • the lower end is connected to the second liquid refrigerant supply pipe 131 through the liquid refrigerant inlet pipe 135 for the second evaporation pipe.
  • the second evaporation pipe 133a of each of the second evaporators 133-1 and 133-2 is connected to the gas refrigerant outlet pipe 134 for the second evaporation pipe and the liquid refrigerant inlet pipe 135 for the second evaporation pipe. .
  • Each of the second refrigerant pipe liquid refrigerant inlet pipe 135 is provided with an opening and closing valve 135a for the second evaporation pipe and a flow control valve 135b for the second evaporation pipe.
  • Each of the second evaporation pipe flow control valve 135b serves to adjust an amount of liquid refrigerant into the second evaporation pipe 133a of each of the second evaporators 133-1 and 133-2. After the predetermined flow rate is set at the time of installation, the refrigerant flows at the preset flow rate during normal operation.
  • the second defrosting refrigerant discharge pipe 136 is provided in the liquid refrigerant inlet pipe 135 for the second evaporation tube corresponding to the second evaporator 133-2.
  • liquid refrigerant inlet pipe 135 for the second evaporator tube corresponding to the second evaporator 133-1 positioned at the lowest position does not have a defrost refrigerant discharge tube.
  • Each of the second defrost refrigerant discharge tubes 136 has an upper end connected to the liquid refrigerant inlet tube 135 for the second evaporation tube corresponding to the second evaporation tube while the lower end thereof is disposed at a lower position than the second evaporation tube. It is connected to the liquid refrigerant inlet pipe 135 for the second evaporation pipe connected to another second evaporation pipe.
  • the second defrosting refrigerant discharge pipe 136 provided in correspondence with the second evaporator 133-2 has an upper end portion corresponding to the second evaporator 133-2, and the second evaporator opening / closing valve 135a and the second It is connected to the liquid refrigerant inlet pipe 135 for the second evaporation pipe between the two evaporation pipe (133a).
  • the second defrosting refrigerant discharge pipe 136 provided in correspondence with the second evaporator 133-2 has a lower end portion provided in the first evaporator 133-1, the opening / closing valve 135a for the second evaporator 133-1 and the second evaporator. It is connected to the liquid refrigerant inlet pipe 135 for the second evaporation pipe between the pipes (133a).
  • a second refrigerant discharge opening / closing valve 136a is provided in the second defrost refrigerant discharge tube 136.
  • the condenser 140 includes a condenser 141 in the form of various heat exchangers, a gas refrigerant supply pipe 142 for supplying a gaseous refrigerant from the gas-liquid separator 110 to the condenser 141, and a condenser.
  • the liquid refrigerant recovery pipe 143 for recovering the liquid refrigerant in the liquid state in which the gaseous refrigerant is condensed in the gas-liquid separator 110 is formed at 140.
  • the condenser 140 is configured to directly condense the gas refrigerant into the liquid refrigerant without the compression process. However, according to the embodiment, the condenser 140 compresses the low-pressure gas refrigerant into a high-pressure gas refrigerant by a compressor. It may be a way to condense it.
  • the system is operated to cool the refrigeration and cold storage, etc. to a low temperature state.
  • both the first evaporating pipe open / close valve 125a and the second evaporating pipe open / close valve 135a are in an open state, and the first refrigerant discharge open / close valve 126a and the second refrigerant discharge are open.
  • the on-off valve 136a and the bypass on-off valve 127a are all in a closed state.
  • the liquid refrigerant is the first liquid evaporator (123-) through the first liquid refrigerant supply pipe 121 and the liquid refrigerant inlet pipe 125 for the first evaporation tube in the gas-liquid separator 110.
  • the first evaporation pipe (123a) is introduced into the first evaporation pipe (123a) while evaporating and cooling the inside of the refrigerated warehouse, evaporation in the first evaporation pipe (123a)
  • the gaseous coolant is recovered to the gas-liquid separator 110 through the first gaseous coolant outlet pipe 124 and the first gas coolant recovery pipe 122.
  • the liquid refrigerant is the second liquid evaporator (133-) in the gas-liquid separator 110 through the second liquid refrigerant supply pipe 131 and the liquid refrigerant inlet pipe 135 for the second evaporation tube.
  • 1, 133-2 to the second evaporation pipe (133a) and then evaporated in the second evaporation pipe (133a) to cool the inside of the freezer and cold storage warehouse, the gas refrigerant evaporated in the second evaporation pipe (133a)
  • the gaseous coolant outlet pipe 134 and the second gas refrigerant recovery pipe 132 for the second evaporation pipe are recovered to the gas-liquid separator 110.
  • the gas refrigerant of the gas-liquid separator 110 is supplied to the condenser 141 through the gas coolant supply pipe 142 to condense into a liquid refrigerant and then recovered to the gas-liquid separator 110 through the liquid refrigerant recovery pipe 143.
  • condensation heat source of the condenser 141 various heat sources may be adopted.
  • Each evaporator performs defrosting once or twice a day.
  • the defrosting operation of the first evaporator 123-2 of the first evaporator 120 will be described as an example.
  • the liquid refrigerant remaining in the first evaporation pipe 123a of the first evaporator 123-2 while the first refrigerant discharge opening / closing valve 126a for the first evaporator 123-2 is opened is the first evaporator 123. It is recovered to the gas-liquid separator 110 via the first defrost refrigerant discharge pipe 126 and the first gas refrigerant recovery pipe 122 for ⁇ 2). By discharging the liquid refrigerant, it is not necessary to evaporate the liquid refrigerant inside the first evaporation pipe 123a of the first evaporator 123-2 for the defrosting operation.
  • the first evaporation pipe 123a of the first evaporator 123-2 is discharged by the first defrosting means. Defrosting operation is performed.
  • the defrosting operation can be performed at a very short time and at a low cost, and it is also possible to drastically reduce the operation stop time of the evaporator 1 evaporator 123-2, thereby increasing the constant temperature of the refrigeration and cold storage warehouse.
  • the bypass opening / closing valve 127a of the bypass pipe 127-2 corresponding to the first evaporator 123-2 is opened and is supplied to the first evaporating pipe 123a of the first evaporator 123-2 in the normal operation.
  • the refrigerant having a flow rate corresponding to the flow rate of the refrigerant which has been used is bypassed to the first gas refrigerant recovery pipe 122 through the bypass pipe 127-2 and then recovered to the gas-liquid separator 110. Therefore, the other evaporators 123-1 and 123-3 may be supplied with the same liquid refrigerant in both normal operation and defrost operation, thereby increasing the constant temperature of the internal temperature.
  • the first evaporation tube open / close valve 125a is opened, and the first refrigerant discharge open / close valve 126a and the bypass open / close valve 127a are closed to perform normal operation.
  • the defrosting operation for the first evaporator 123-1 is performed by a conventional method.
  • defrosting of the second evaporator 133-2 of the second evaporator 130 will be described as an example.
  • the liquid refrigerant remaining in the second evaporation pipe 133a of the second evaporator 133-2 while the second refrigerant discharge opening / closing valve 136a is opened for the second evaporator 133-2 is stored in the second evaporator 133.
  • the second of the second evaporator 133-1 via the second refrigerant cooling pipe 136 for the second defrost refrigerant pipe 136 and the second liquid evaporator inlet pipe 135 for the second evaporator 133-1. It is supplied to the evaporation tube 133a and evaporated. By discharging the liquid refrigerant, it is not necessary to evaporate the liquid refrigerant inside the second evaporation pipe 133a of the second evaporator 133-2 for the defrosting operation.
  • the defrosting operation is performed on the second evaporator 133a of the second evaporator 133-2 by defrosting means. This is done.
  • the defrosting operation can be performed at a very short time and at a low cost, and further, the operation stop time of the second evaporator 133-2 can be greatly reduced, thereby increasing the constant temperature of the freezer and cold storage warehouse.
  • the second evaporation tube open / close valve 135a is opened, and the opened second refrigerant discharge open / close valve 136a is closed to perform normal operation.
  • the defrosting operation for the second evaporator 133-1 positioned at the lowest position should be applied in the conventional manner.
  • the present invention can be used as a cooling system for cooling the distribution warehouse for refrigeration and cold storage.

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  • Mechanical Engineering (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

La présente invention concerne un système de refroidissement complexe grâce auquel, lorsqu'un dégivrage d'un évaporateur est nécessaire, un réfrigérant liquide n'est pas directement évaporé, mais un réfrigérant liquide résiduel de l'évaporateur nécessitant le dégivrage est récupéré à l'aide d'un séparateur gaz-liquide, ou le réfrigérant liquide résiduel de l'évaporateur nécessitant le dégivrage est évacué vers un autre évaporateur, et ainsi le temps requis et les coûts générés pour le dégivrage peuvent être réduits au minimum.
PCT/KR2018/007452 2018-06-20 2018-07-02 Système de refroidissement complexe à capacité de dégivrage efficace WO2019245096A1 (fr)

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KR1020180070533A KR102046129B1 (ko) 2018-06-20 2018-06-20 효율적인 제상 운전이 가능한 복합식 냉각 시스템
KR10-2018-0070533 2018-06-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115540404A (zh) * 2021-06-29 2022-12-30 青岛海尔电冰箱有限公司 用于冷藏冷冻装置的制冷系统以及冷藏冷冻装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111141092B (zh) * 2020-01-19 2024-04-05 天津商业大学 一种屠宰加工厂制冷系统及其控制方法
CN112460858B (zh) * 2020-12-01 2022-03-18 珠海格力电器股份有限公司 一种空调器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970070859A (ko) * 1996-04-01 1997-11-07 이종수 냉동기의 개별 제상장치
KR20030095625A (ko) * 2002-06-12 2003-12-24 엘지전자 주식회사 공기조화기의 제상운전방법
JP2004163084A (ja) * 2002-09-24 2004-06-10 Denso Corp 蒸気圧縮式冷凍機
JP2005300067A (ja) * 2004-04-14 2005-10-27 Denso Corp エジェクタサイクル
KR20150068710A (ko) * 2013-12-12 2015-06-22 삼성전자주식회사 냉각장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200194352Y1 (ko) 2000-03-20 2000-09-01 주식회사경동냉열산업 냉동기용 저온증발기의 제상수분사장치
KR100751109B1 (ko) * 2005-12-31 2007-08-22 엘지전자 주식회사 냉장고 및 냉장고의 제어방법
JP2008020089A (ja) * 2006-07-11 2008-01-31 Toyota Industries Corp 冷却装置
KR100935419B1 (ko) * 2009-06-12 2010-01-06 주식회사 일진엔지니어링 냉동기의 냉매 회수와 주입 장치 및 방법
KR102034582B1 (ko) * 2012-07-24 2019-11-08 엘지전자 주식회사 냉동 사이클 및 냉동 사이클을 포함하는 냉장고

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970070859A (ko) * 1996-04-01 1997-11-07 이종수 냉동기의 개별 제상장치
KR20030095625A (ko) * 2002-06-12 2003-12-24 엘지전자 주식회사 공기조화기의 제상운전방법
JP2004163084A (ja) * 2002-09-24 2004-06-10 Denso Corp 蒸気圧縮式冷凍機
JP2005300067A (ja) * 2004-04-14 2005-10-27 Denso Corp エジェクタサイクル
KR20150068710A (ko) * 2013-12-12 2015-06-22 삼성전자주식회사 냉각장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115540404A (zh) * 2021-06-29 2022-12-30 青岛海尔电冰箱有限公司 用于冷藏冷冻装置的制冷系统以及冷藏冷冻装置
WO2023273705A1 (fr) * 2021-06-29 2023-01-05 青岛海尔电冰箱有限公司 Système de réfrigération pour dispositif de réfrigération et de congélation, et dispositif de réfrigération et de congélation

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