EP3943839A1 - Séparateur de liquide, système de refroidissement et procédé de séparation gaz-liquide - Google Patents

Séparateur de liquide, système de refroidissement et procédé de séparation gaz-liquide Download PDF

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Publication number
EP3943839A1
EP3943839A1 EP20779559.2A EP20779559A EP3943839A1 EP 3943839 A1 EP3943839 A1 EP 3943839A1 EP 20779559 A EP20779559 A EP 20779559A EP 3943839 A1 EP3943839 A1 EP 3943839A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
liquid
closed container
liquid separator
phase 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.)
Withdrawn
Application number
EP20779559.2A
Other languages
German (de)
English (en)
Other versions
EP3943839A4 (fr
Inventor
Takafumi NATSUMEDA
Masaki Chiba
Koichi TODOROKI
Minoru Yoshikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of EP3943839A1 publication Critical patent/EP3943839A1/fr
Publication of EP3943839A4 publication Critical patent/EP3943839A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • 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
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/04—Refrigerant level

Definitions

  • the present invention relates to a liquid separator, a cooling system and a gas-liquid separation method, which are mainly used in a cooling system and separate a liquid flowing from an evaporator to a compressor.
  • an accumulator serving as a liquid separator may be installed in front of the suction port of the compressor.
  • the cooling system shown in Patent Document 1 is provided with an evaporator, a compressor, a condenser, and a decompression expansion valve along the refrigerant flow path.
  • the evaporator absorbs ambient heat by evaporating the liquid-phase refrigerant.
  • the compressor compresses the vapor-phase refrigerant delivered from the evaporator.
  • the condenser releases the heat of the refrigerant whose high pressure is increased by the compressor to condense the vapor-phase refrigerant.
  • the decompression expansion valve decompresses and expands the liquid-phase refrigerant that has been cooled by the condenser.
  • This cooling system shown in Patent Document 1 is provided with a liquid separator on the upstream side of the compressor that separates the refrigerant after passing through the evaporator into gas and liquid.
  • This liquid separator has a vertically elongated separation container as a whole.
  • a refrigerant inflow pipe and a vapor-phase refrigerant outflow pipe are installed on top of the separation container.
  • a liquid-phase refrigerant outflow pipe is installed at the bottom of the separation container.
  • the refrigerant that has flowed into the inside through the refrigerant inflow pipe is centrifugally separated into a liquid-phase refrigerant and vapor-phase refrigerant while rotating in the circumferential direction along the inner wall of the liquid separator of the separation container.
  • the vapor-phase refrigerant in the separation container is guided to the decompression expansion valve via the upper vapor-phase refrigerant outflow pipe, and the liquid-phase refrigerant in the separation container is guided to the evaporator via the lower liquid-phase refrigerant outflow pipe.
  • the liquid separator disclosed in Patent Document 2 has a closed container formed vertically as a whole. At the bottom of this closed container, a first pipe that allows gas-liquid two-phase fluid to flow into the inside of the closed container, a second pipe that discharges the gas in the closed container to the outside, and a third pipe that discharges the liquid in the closed container to the outside are connected.
  • the accumulator is long in the vertical direction, and when the compressor is placed on the accumulator, the upper part of the liquid separator becomes heavy and the center of gravity is high. As a result, the liquid separator becomes unstable, and so new technology has been anticipated in order to remedy this point.
  • the present invention provides a liquid separator, a cooling system and a gas-liquid separation method that enable a compressor to be placed on a closed container.
  • the present invention proposes the following means.
  • a liquid separator includes a closed container having a cylindrical shape in which a refrigerant is stored; a refrigerant inflow pipe that allows the refrigerant to flow into the closed container; and a refrigerant outflow pipe that allows a vapor-phase refrigerant in a space inside the closed container to flow out, with each of the refrigerant inflow pipe and the refrigerant outflow pipe being connected from the upper side of the closed container to the inside thereof, and the closed container being formed in a short cylindrical shape in which the height is smaller relative to the diameter.
  • a cooling system includes an evaporator that absorbs ambient heat by evaporating a liquid-phase refrigerant, a compressor that compresses a vapor-phase refrigerant, a condenser that releases the heat of the refrigerant that has been pressurized by the compressor and condenses the vapor-phase refrigerant, and a decompression expansion valve that depressurizes and expands the liquid-phase refrigerant cooled by the condenser along a refrigerant path, in which a liquid separator for gas-liquid separation of the refrigerant after passing through the evaporator is provided on the upstream side of the compressor, the liquid separator has a closed container having a cylindrical shape in which a refrigerant is stored; a refrigerant inflow pipe that allows the refrigerant to flow into the closed container; and a refrigerant outflow pipe that allows the refrigerant in a space inside the closed container to flow out, the closed container
  • a gas-liquid separation method comprising connecting a closed container having a cylindrical shape in which the refrigerant is stored, with a refrigerant inflow pipe that allows a refrigerant to flow into and a refrigerant outflow pipe that allows the refrigerant in a space inside the closed container to flow out, and forming the closed container in a short cylindrical shape in which the height is smaller relative to the diameter.
  • a liquid separator can be stably held even if a heavy compressor is arranged on the liquid separator.
  • a liquid separator 10 according to the embodiment of the present invention will be described with reference to FIG. 1 .
  • the liquid separator 10 is located on the upstream side of a compressor 3 in a cooling system 1, and is provided for gas-liquid separation of a refrigerant after passing through an evaporator 2, for example.
  • This cooling system 1 is provided with the evaporator 2, the compressor 3, a condenser 4, and a decompression expansion valve 5 along a refrigerant flow path 1A.
  • the evaporator 2 absorbs ambient heat by evaporating the liquid-phase refrigerant.
  • the compressor compresses the vapor-phase refrigerant.
  • the condenser 4 releases the heat of the refrigerant that has become high pressure by the compressor 3 to condense (or forcibly compress) the vapor-phase refrigerant.
  • the decompression expansion valve 5 expands the liquid-phase refrigerant supplied from the condenser 4.
  • the liquid separator 10 located on the upstream side of the compressor 3 has a cylindrical closed container 11 in which the refrigerant C is stored. Inside the closed container 11 are provided a refrigerant inflow pipe 12 for flowing in a vapor phase medium or a gas-liquid two-phase refrigerant and a refrigerant outflow pipe 13 that discharges the vapor-phase refrigerant in the closed container 11 to the outside.
  • the refrigerant inflow pipe 12 and the refrigerant outflow pipe 13 are each installed from the upper surface 11A of the closed container 11 toward the inside of the container 11B.
  • the refrigerant inflow pipe 12 and the refrigerant outflow pipe 13 are arranged at a mutual interval as large as possible in the radial direction (R direction) of the closed container 11.
  • the closed container 11 of the liquid separator 10 has a height h that is relatively small with respect to a diameter along the R direction, and is configured to have a short cylindrical shape as a whole.
  • the vapor-phase refrigerant that has absorbed heat H1 from the heat source by the evaporator 2 and evaporated is gas-liquid separated by the liquid separator 10, compressed by the compressor 3 and then sent to the condenser 4. Subsequently, the liquid-phase refrigerant, which is condensed by heat dissipation H2 to a cold source in the condenser 4, is depressurized to a predetermined pressure by the decompression expansion valve 5 and sent to the evaporator 2 again.
  • the liquid-phase refrigerant may not be sufficiently evaporated in the evaporator 2 due to a decrease in the load of the heat source, a failure of the decompression expansion valve 5, and the like and may be supplied to the compressor 3 as a gas-liquid mixed flow.
  • the phenomenon in which a liquid is supplied to the compressor 3 in this way is called a liquid bag.
  • the performance of the compressor 3 may be deteriorated or a failure may be caused.
  • the liquid separator 10 according to the embodiment of the present invention, the liquid is separated from the gas-liquid mixed flow after passing through the evaporator 2, and only the gas is supplied to the compressor 3.
  • the closed container 11 is formed with a short cylindrical shape whose height (h) is relatively small with respect to the radial direction (R direction). Accordingly, the height of the entire cooling system can be lowered, and so even if the heavy compressor 3 is arranged on the upper surface 11A of the closed container 11, the device as a whole can be installed in a stable state without becoming top heavy.
  • the closed container 11 is formed in a short cylinder shape. Accordingly, the refrigerant inflow pipe 12 and the refrigerant outflow pipe 13 can be arranged on the upper surface 11A of the closed container 11 at a sufficient interval in the radial direction (R direction).
  • the liquid separator 10 it is possible to prevent the effect of turbulence of the liquid level of the refrigerant caused by inflow of the refrigerant from the refrigerant inflow pipe 12 to the closed container 11 from extending to the refrigerant flowing out to the refrigerant outflow pipe 13. Therefore, it is possible to prevent beforehand the situation of the liquid-phase refrigerant in the closed container 11 flowing out from the refrigerant outflow pipe 13 as a result of being churned.
  • the liquid separator 200 according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 7 .
  • This liquid separator 200 is installed in the cooling system F.
  • the cooling system F is provided with an evaporator 100, a liquid separator 200, a compressor 300, a condenser 400, and a decompression expansion valve 500 in a refrigerant flow path (specifically, a pipeline) composed of refrigerant flow paths 610, 620, 630, 640, and 650.
  • the evaporator 100 absorbs the ambient heat H1 by evaporating the liquid-phase refrigerant.
  • the liquid separator 200 separates the refrigerant into gas and liquid.
  • the compressor 300 compresses the vapor-phase refrigerant discharged from the liquid separator 200.
  • the condenser 400 releases the heat of the refrigerant pressurized by the compressor 300 to condense the vapor-phase refrigerant.
  • the decompression expansion valve 500 decompresses and expands the liquid-phase refrigerant cooled by the condenser 400.
  • the refrigerant supplied from the decompression expansion valve 500 via the refrigerant flow path 650 absorbs heat H1 from the heat source by the evaporator 100 and evaporates.
  • the evaporated vapor-phase refrigerant passes through the refrigerant flow path 610, the liquid separator 200, and the refrigerant flow path 620 in this order, and is sent to the compressor 300.
  • the vapor-phase refrigerant compressed to high temperature and high pressure by the compressor 300 is sent to the condenser 400 via the refrigerant flow path 630, radiates H2 to a cold source, and condenses.
  • the liquid-phase refrigerant condensed in the condenser 400 moves to the decompression expansion valve 500 through the refrigerant flow path 640 and is reduced to a predetermined pressure. Subsequently, the liquid-phase refrigerant is sent to the evaporator 100 again through the refrigerant flow path 650.
  • the liquid separator 200 is arranged on the upstream side of the compressor 300 and has a role of preventing the liquid-phase refrigerant from being sucked into the compressor 300.
  • the compressor 300 Since the compressor 300 is designed to compress the vapor-phase refrigerant, it is known that if the liquid-phase refrigerant is mixed in, it will lead to a failure (called a liquid-back phenomenon). Normally, the refrigerant completely evaporates in the evaporator 100 and becomes only a vapor-phase refrigerant. However, in the evaporator 100, when a disturbance such as a decrease in heat load occurs, the refrigerant may not evaporate and a part of the liquid-phase refrigerant may remain. In that case, this liquid-phase refrigerant is sent to the refrigerant flow path 610. Therefore, the liquid separator 200 separates the liquid-phase refrigerant contained in the refrigerant and supplies only the vapor-phase refrigerant to the downstream compressor 300.
  • the refrigerant flow path 620 Unless there are restrictions on installation, it is preferable to construct the refrigerant flow path 620 while avoiding a structure having a reverse gradient with respect to the direction of gravity or a U-shaped structure. This is because if such a reverse gradient structure or U-shaped structure exists in the refrigerant flow path 620, the liquid-phase refrigerant condensed in the refrigerant flow path 620 will accumulate at that portion when the cooling system F is stopped.
  • the liquid separator 200 located on the upstream side of the compressor 300 has a cylindrical housing 210 that serves as a closed container in which the refrigerant is stored. Inside the housing 210 are installed a refrigerant inflow pipe 220 for flowing in a vapor-phase refrigerant or a vapor-liquid two-phase refrigerant and a refrigerant outflow pipe 230 for flowing out the vapor-phase refrigerant in the housing 210 to the outside.
  • the refrigerant inflow pipe 220 and the refrigerant outflow pipe 230 are installed from the upper surface 210A of the housing 210 toward the inside of the container 210B.
  • the refrigerant inflow pipe 220 and the refrigerant outflow pipe 230 are arranged at an interval in the radial direction (R direction) of the housing 210.
  • the refrigerant inflow pipe 220 is connected to the refrigerant flow path 610 in which the vapor-phase refrigerant or the gas-liquid two-phase refrigerant from the evaporator 100 is guided.
  • the refrigerant outflow pipe 230 is connected to a refrigerant flow path 620 that guides the vapor-phase refrigerant to the compressor 300.
  • the vapor-phase refrigerant or the gas-liquid two-phase refrigerant after passing through the evaporator 100 flows into the housing 210 through the refrigerant inflow pipe 220, and the liquid-phase refrigerant in the gas-liquid mixed flow falls to the bottom of the housing 210 by gravity and accumulates there.
  • the vapor-phase refrigerant in the gas-liquid mixed flow is sent to the compressor 300 through the refrigerant outflow pipe 230.
  • the housing 210 of the liquid separator 200 has a height h relatively small with respect to a diameter along the R direction, and is configured to have a short cylindrical shape as a whole.
  • the housing 210 is formed in the shape of a short cylinder whose height h is relatively small with respect to the diameter in the R direction, even if the compressor 300 with weight is arranged on the upper surface 210A of the housing 210, it is possible to hold the compressor 300 in a stable state.
  • the vapor-phase refrigerant which evaporated by absorbing heat H1 from the heat source by the evaporator 2 is compressed by the compressor 300 to attain a high temperature and high pressure, and then sent to the condenser 400. Subsequently, the liquid-phase refrigerant, which is condensed by heat dissipation H2 to a cold source in the condenser 400, is depressurized to a predetermined pressure by the decompression expansion valve 500 and sent to the evaporator 100 again.
  • a mesh-shaped splash prevention plate 240 is installed below an inlet (opening for the liquid to flow into the liquid separator 200) 220A of the refrigerant inflow pipe 220 to prevent the vapor-phase refrigerant C1 that is supplied through the refrigerant inflow pipe 220 from blowing up the liquid-phase refrigerant C2 that has accumulated in the housing 210.
  • the housing 210 when the flow velocity of the vapor-phase refrigerant C1 supplied through the refrigerant inflow pipe 220 is large, even if the liquid-phase refrigerant is not mixed in the refrigerant C1, the liquid-phase refrigerant C2 staying on the bottom surface of the housing 210 may be blown up by the momentum of the vapor-phase refrigerant C1. In this case, there is a risk that the blown-up liquid-phase refrigerant C2 will flow out from an outlet (opening for the liquid to flow out from the housing 210) 230A of the refrigerant outflow pipe 230.
  • the mesh-shaped splash prevention plate 240 is installed below the refrigerant inflow pipe 220.
  • the mesh-shaped splash prevention plate 240 mitigates the impact of the vapor-phase refrigerant C1 on the liquid surface of the liquid-phase refrigerant C2, thereby preventing the liquid-phase refrigerant C2 from being blown up.
  • the housing 210 is formed in a short cylindrical shape having a height h relatively small in the radial direction (R direction), even if the heavy compressor 300 is arranged on the upper surface 210A of the housing 210, the liquid separator 200 can be held in a stable state without becoming top heavy.
  • the refrigerant inflow pipe 220 and the refrigerant outflow pipe 230 can be arranged in the upper surface 210A of the housing 210 at a regular interval in the radial direction (R direction).
  • the effect of undulation (turbulence) of the liquid level of the liquid-phase refrigerant C2 caused by the inflow of the refrigerant from the refrigerant inflow pipe 220 into the housing 210 is prevented from extending to the refrigerant outflow pipe 230. Therefore, it is possible to prevent the liquid-phase refrigerant C2 in the housing 210 from being blown up and flowing out from the refrigerant outflow pipe 230.
  • providing the mesh-shaped splash prevention plate 240 below the inlet 220A of the refrigerant inflow pipe 220 alleviates the momentum of the vapor-phase refrigerant C1 colliding with the liquid surface to prevent undulation of the liquid level of the liquid-phase refrigerant C2. This also makes it possible to prevent the liquid-phase refrigerant C2 in the housing 210 from flowing out from the outlet 230A of the refrigerant outflow pipe 230.
  • liquid separator 200 there is no complicated structure causing a large pressure loss in the flow path of the vapor-phase refrigerant from the refrigerant inflow pipe 220 to the refrigerant outflow pipe 230.
  • the liquid separator 200 it is possible to prevent the so-called liquid back phenomenon to the compressor 300 (damage to the pipeline and equipment of the cooling system due to droplets of the refrigerant flowing through the flow path with kinetic energy) while suppressing the pressure loss during the gas-liquid separation of the refrigerant.
  • a mesh-shaped plate is used as the splash prevention plate 240, but the present invention is not limited thereto. That is, as the splash prevention plate 240, a plate having a large number of through holes 240a as shown in FIG. 6 , for example, a plate having a plurality of holes such as punching metal may be used.
  • splash prevention plate 240 a net-like body formed by entwining a plurality of fibers 240b as shown in FIG. 7 , for example, a metal scrubbing brush processed into a flat shape may be used.
  • a liquid separator 200' according to the second embodiment of the present invention will be described with reference to FIG. 8 .
  • the liquid separator 200' according to the second embodiment differs from the liquid separator 200 according to the first embodiment on the point of a liquid intrusion prevention plate 250 being provided below the outlet of the refrigerant outflow pipe 230.
  • the liquid intrusion prevention plate 250 for preventing suctioning of the liquid-phase refrigerant C2 is provided below the outlet of the refrigerant outflow pipe (the port through which the liquid flows from the liquid separator 200') 230A.
  • liquid intrusion prevention plate 240 below the refrigerant inflow pipe 220, it is possible to prevent droplets of the liquid-phase refrigerant C2 from being sucked into the refrigerant outflow pipe 230, whereby the liquid separation function can be improved.
  • liquid intrusion prevention plate 240 in addition to a normal plate, it is possible to use a mesh-shaped plate shown in FIG. 5B , a plate having a large number of through holes shown in FIG. 6 , a net-like body (or cotton-like body) formed by the entwining of fibers shown in FIG. 7 , or the like.
  • the liquid separator 200" according to the third embodiment of the present invention will be described with reference to FIGS. 9 and 10 .
  • the liquid separator 200" shown in the third embodiment differs from the liquid separators 200 and 200' shown in the first and second embodiments on the point of being provided with a liquid level sensor 260, a maintenance valve 270, and a control unit 700.
  • the gaseous refrigerant is completely sent from the outlet of the evaporator 100, and the liquid-phase refrigerant is transferred from the evaporator 100 to the liquid separator 200 only when the operation becomes unstable due to a disturbance.
  • the liquid-phase refrigerant C2 in the housing 210 gradually evaporates during the subsequent normal operation to become the vapor-phase refrigerant C1, whereby the accumulation thereof is eliminated.
  • the liquid level sensor 260 for monitoring the amount of liquid of the liquid-phase refrigerant C2 remaining in the housing 210 is attached to this housing 210.
  • the droplet prevention plate 240 will not function and the liquid separation function may be significantly reduced.
  • liquid-phase refrigerant C2 may flow out from the refrigerant outflow pipe 230 and cause liquid back, it will be necessary to stop the compressor 300.
  • a control unit 700 is provided that monitors the value of the liquid level sensor 260 of the liquid separator 200 and stops the entire cooling system F' including the compressor 300 when the liquid level of the liquid-phase refrigerant C2 exceeds a limit value.
  • the maintenance valve 270 at the lower part of the housing 210 is opened and the accumulated liquid-phase refrigerant C2 is discharged, whereby a return to the normal state can be achieved.
  • the maintenance valve 270 may be opened and closed manually by an operator, or may be opened and closed by a drive means operated by a separately provided control unit 700.
  • the present invention is mainly used in cooling systems and can be applied to a liquid separator, a cooling system and a gas-liquid separation method that separates liquid flowing from the evaporator into the compressor. Even if a heavy compressor is arranged on top of the liquid separator, the liquid separator can be stably held.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP20779559.2A 2019-03-22 2020-03-06 Séparateur de liquide, système de refroidissement et procédé de séparation gaz-liquide Withdrawn EP3943839A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019055600 2019-03-22
PCT/JP2020/009696 WO2020195711A1 (fr) 2019-03-22 2020-03-06 Séparateur de liquide, système de refroidissement et procédé de séparation gaz-liquide

Publications (2)

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EP3943839A1 true EP3943839A1 (fr) 2022-01-26
EP3943839A4 EP3943839A4 (fr) 2022-05-18

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EP20779559.2A Withdrawn EP3943839A4 (fr) 2019-03-22 2020-03-06 Séparateur de liquide, système de refroidissement et procédé de séparation gaz-liquide

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US (1) US20220154988A1 (fr)
EP (1) EP3943839A4 (fr)
JP (1) JP7188563B2 (fr)
AU (1) AU2020248049B2 (fr)
WO (1) WO2020195711A1 (fr)

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AU2020248049B2 (en) 2023-06-01
JP7188563B2 (ja) 2022-12-13
AU2020248049A1 (en) 2021-11-11
EP3943839A4 (fr) 2022-05-18
WO2020195711A1 (fr) 2020-10-01
US20220154988A1 (en) 2022-05-19
JPWO2020195711A1 (ja) 2021-10-21

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