EP2449322A1 - Dispositif et procédé pour délivrer une tête supplémentaire pour supporter un système d'alimentation en liquide de réfrigération - Google Patents

Dispositif et procédé pour délivrer une tête supplémentaire pour supporter un système d'alimentation en liquide de réfrigération

Info

Publication number
EP2449322A1
EP2449322A1 EP10794456A EP10794456A EP2449322A1 EP 2449322 A1 EP2449322 A1 EP 2449322A1 EP 10794456 A EP10794456 A EP 10794456A EP 10794456 A EP10794456 A EP 10794456A EP 2449322 A1 EP2449322 A1 EP 2449322A1
Authority
EP
European Patent Office
Prior art keywords
gas
conduit
refrigerant
liquid
rising
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Withdrawn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
EP10794456A
Other languages
German (de)
English (en)
Other versions
EP2449322A4 (fr
Inventor
Håkan OHLSSON
Manne Eriksson
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.)
John Bean Technologies AB
Original Assignee
John Bean Technologies AB
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 John Bean Technologies AB filed Critical John Bean Technologies AB
Publication of EP2449322A1 publication Critical patent/EP2449322A1/fr
Publication of EP2449322A4 publication Critical patent/EP2449322A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/18—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium being mixed with, or generated from the liquid to be pumped
    • 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
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
    • F25B23/006—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect boiling cooling 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
    • F25B41/00—Fluid-circulation 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators

Definitions

  • the present invention relates to a refrigerant device and a method for providing additional head to support a refrigeration liquid feed system.
  • the pressure drop across the refrigerant side of evaporators in refrigeration systems vary due to physical design, operating conditions, refrigerant feed rate and refrigerant type.
  • the available liquid head provide liquid pressure to drive the refrigerant through the refrigerant loops of the evaporator.
  • the head provided is sometimes not high enough to drive sufficient amounts of refrigerant through the evaporator loops for different reasons such as the evaporator loop length is too long, heat load is too high, evaporation temperature is too low or the pipe diameter of the loops is too small.
  • the available head may be limited for different reasons such as limited height above the evaporator or that flow restriction in the refrigerant pipes which connects to the evaporator may be too high. Too low refrigerant flow to an evaporator will significantly reduce its efficiency.
  • thermo siphon In the thermo siphon the refrigerant is self-circulating by using density differences in a rising pipe and a falling pipe.
  • the refrigerant liquid is heated by a heater which is energized to operate a vapor pump, the vaporized working fluid is sucked from the outlet side of an evaporator through a bypass, supplied to a nozzle of an air-lift pump and discharged from the tip of the nozzle into the rising pipe.
  • the discharged vapor working fluid is turned into bubbles and flows up along the rising pipe.
  • the working fluid containing the bubbles flows into the evaporator due to the density difference between the liquid working fluid on one hand and the bubble containing working fluid on the other hand and a rising stream caused by rising of the bubbles, vaporizes by absorbing heat from the surroundings at the evaporator, flows down along a falling pipe to a condenser where it gives off heat to the surroundings and liquefies.
  • JP59094444 a natural circulation type boiling cooler is described.
  • the cooler comprises an enclosed circulating circuit comprising a rising tube and a sinking tube.
  • the refrigerant liquid is heated above boiling temperature by a heater in order to produce bubbles. Due to the production of the bubbles a density difference occurs between the two phase refrigerant gas liquid mixture in the rising tube and the one phase refrigerant liquid in the sinking tube. Due to the density difference the refrigerant liquid is circulated in the enclosed circulating circuit.
  • the flow of the two phase refrigerant gas liquid mixture is guided to and cooled by a heat sink section in order to cool down the two phase refrigerant gas liquid mixture into one phase refrigerant liquid.
  • An object of the present invention is to provide additional head to support any refrigeration liquid feed system.
  • a refrigerating device comprises a refrigerant liquid container, a sinking conduit and a rising conduit, the sinking conduit extending downwardly to a connection with the rising conduit, the rising conduit extending upwardly from the connection with the sinking conduit.
  • the refrigerating device further comprises an evaporator having an inlet connected downstream to the rising conduit and an outlet connected to the refrigerant liquid container via a return conduit.
  • refrigerating device comprises a gas injector connected to the rising conduit.
  • the gas injector being adapted to supply gas in order to allow gas to rise together with liquid refrigerant in the rising conduit thereby reducing the total density of the mixture of liquid refrigerant and gas relative the density of liquid refrigerant.
  • the refrigerating device By means of the refrigerating device it is possible to provide additional head to support any refrigeration liquid feed system.
  • a flow of refrigerant liquid is conducted from the refrigerant liquid container via the sinking conduit, the rising conduit, the evaporator and the return conduit back to the refrigerant liquid container. Due to the density of the refrigerant liquid and the gravity a liquid pressure is created in the refrigerant liquid container and the sinking conduit in proportion to the depth below the refrigerant liquid level. The pressure in one point is proportional to the height of refrigerant liquid above it and the density of the refrigerant liquid.
  • the gas injector is adapted to supply gas to the rising conduit.
  • the gas is supplied in order to allow gas to rise together with the refrigerant in the rising conduit and thereby reducing the total density of the mixture of refrigerant and gas relative the density of refrigerant.
  • the pressure at any given point in the rising conduit at least above the point where the gas is injected via the gas injector, is higher than in the corresponding point at the same height of the sinking conduit.
  • the liquid height in the rising conduit is higher than in the sinking conduit to provide the same pressure.
  • the head in the refrigeration liquid feed system is increased.
  • the refrigerating device may also comprise a gas liquid separator arranged downstream the rising conduit and upstream the evaporator.
  • the gas liquid separator arranged downstream the rising conduit and upstream the evaporator separates the gas and the liquid.
  • the liquid flow is directed to the inlet of the evaporator whereas the gas is directed to a gas purge conduit.
  • the gas liquid separator ensures that only liquid or at least only a limited amount of vapor is directed to the evaporator. By only directing liquid to the evaporator the efficiency of the evaporator is increased compared with supplying the evaporator with a mixture of liquid and gas.
  • the refrigerating device may also comprise a pressure regulating device connected to the gas liquid separator.
  • the pressure regulating device allows flow of gas from the gas liquid separator. Further the pressure regulating device regulates the pressure in the gas liquid separator.
  • the gas from the gas liquid separator may be recirculated to the refrigerant liquid container either directly or via the return conduit. By recirculating the gas the gas may be reused.
  • the gas from the gas liquid separator may be recirculated to the gas injector. By recirculating the gas the gas may be reused.
  • a gas vent may be connected to the gas liquid separator. The gas may be recirculated via a gas vent. The gas vented via the gas vent may also be released to the surroundings.
  • the refrigerant liquid container may comprise a gas vent.
  • the gas may then be recirculated via the gas vent.
  • the gas vented via the gas vent may also be released to the surroundings.
  • the gas supplied by the gas injector may be pressurized.
  • the supplied gas may be pressurized by an internal or external compressor.
  • the compressed gas may have a higher pressure than the pressure in the rising conduit.
  • the gas may be refrigerant vapor. By using refrigerant vapor no alien substance is added to the refrigerant.
  • the gas may be air. By using air a simple device is achieved.
  • a method for circulating a refrigerant liquid in a refrigerating device comprises conducting a flow of refrigerant liquid from a refrigerant liquid container via a sinking conduit, a rising conduit, an evaporator and a return conduit back to the refrigerant liquid container, and supplying gas via a gas injector connected to the rising conduit in order to allow gas to rise together with refrigerant liquid in the rising conduit thereby reducing the total density of the mixture of refrigerant liquid and gas relative the density of refrigerant liquid.
  • the method may further comprise separating the supplied gas from the refrigerant liquid at a gas liquid separator located downstream to the evaporator.
  • the method may further comprise regulating the pressure in the gas liquid separator by means of a pressure regulating device.
  • the method may further comprise recirculating the gas from the pressure regulating device to the return conduit or to the refrigerant liquid container.
  • the method may further comprise pressurizing the gas before supplying the gas via the gas injector.
  • the supplied gas may be refrigerant vapor.
  • the method may further comprise venting refrigerant vapor from the liquid refrigerant container and supplying the vented refrigerant vapor to the gas injector.
  • Figure 1 illustrates a refrigerating device according to an embodiment of the invention.
  • Figure 2 illustrates a refrigerating device according to an embodiment of the invention.
  • Figure 3 illustrates a refrigerating device according to an embodiment of the invention.
  • Figure 4 illustrates a refrigerating device according to an embodiment of the invention.
  • the present invention relates to a refrigerant device and a method for providing additional head to support a refrigeration liquid feed system.
  • the refrigeration liquid feed system may be a low volume system or a gravity feed system. It should also be mentioned that the invention also can provide additional head to support a pump feed system, as well as be used on its own to pump refrigerant liquid or any liquid.
  • FIG. 1 illustrates a refrigerating device 1 according to one embodiment of the invention.
  • the refrigerating device 1 comprises a refrigerant liquid container 2, a sinking conduit 4, a rising conduit 6, an evaporator 8 and a return conduit 10.
  • the sinking conduit 4 is extending downwardly from the refrigerant liquid container 2 to a connection with the rising conduit 6.
  • the sinking conduit 4 may be positioned vertically or sloped or a combination of these positions.
  • the sinking conduit 4 may even have horizontal sections.
  • the sinking conduit 4 is connected to the refrigerant liquid container 2 below the surface of the refrigerant liquid in the refrigerant liquid container 2.
  • the rising conduit 6 is extending upwardly from the connection with the sinking conduit 4.
  • the rising conduit 6 may be positioned vertically or sloped or a combination of these positions.
  • the rising conduit 6 may even have horizontal sections.
  • the evaporator 8 has an inlet 12 connected downstream to the rising conduit 6 and an outlet 14 connected to the refrigerant liquid container 2 via the return conduit 10.
  • the return conduit 10 may be positioned vertically, horizontally, sloped or a combination of these positions.
  • Refrigerant liquid is contained in the refrigerant liquid container 2.
  • the level of refrigerant liquid is either above, lateral to or below the evaporator 8.
  • the refrigerant liquid may be any suitable refrigerant liquid known by the skilled man.
  • An example of a refrigerant liquid is ammonia.
  • the refrigerating device 1 further comprises a gas injector 16 connected to the rising conduit 6.
  • the gas injector 16 is adapted to supply gas to the rising conduit 6.
  • the gas is supplied in order to allow gas to rise together with the refrigerant in the rising conduit 6 and thereby reducing the total density ⁇ 2 of the mixture of refrigerant and gas relative the density pi of refrigerant.
  • the supplied gas may be pressurized.
  • the gas may further be pressurized, e.g. by using a gas compressor 28 and/or a pressure vessel.
  • the gas compressor 28 may be placed external or internal.
  • the pressure vessel may be placed external or internal.
  • the supplied gas may be air.
  • the supplied gas may be refrigerant vapor. By using refrigerant vapor no alien substance is added to the refrigerant.
  • the refrigerating device 1 comprises a gas liquid separator 18.
  • the gas liquid separator 18 is arranged downstream the rising conduit 6 and upstream the evaporator 8.
  • the gas liquid separator 18 directs the liquid flow to the inlet 12 of the evaporator 8 and directs the gas via a gas purge conduit 22.
  • the gas may be directed back to the refrigerant liquid container 2.
  • the gas purge conduit 22 may be connected directly to the refrigerant liquid container 2 or, as in figure 1 , indirectly to the refrigerant liquid
  • the gas separated in the gas liquid separator 18 be directed to a first gas vent (not shown).
  • An outlet of the first gas vent may further be connected to a suction side of a compressor.
  • the compressor may be the compressor 28 mentioned above.
  • the gas directed from the gas liquid separator may be dry gas or mixed gas and refrigerant liquid.
  • a part of the gas separated at the gas liquid separator 18 may be recirculated to the gas injector 16. The rest of the gas separated at the gas liquid separator 18 may then either be recirculated to the refrigerant liquid container 2 directly or indirectly via the return conduit 10 or be released to the surroundings.
  • the refrigerating device 1 also comprises a pressure regulating device 20.
  • the pressure regulating device 20 is connected to the gas liquid separator 18.
  • the pressure regulating device 20 is integrated in the gas purge conduit 22.
  • the pressure regulating device 20 is used to allow flow of gas from the gas liquid separator 18 and to regulate the pressure in the gas liquid separator 18. If the first gas vent is used it may be connected downstream the pressure regulating device 20.
  • the gas directed from the gas liquid separator 18 is directed back to the refrigerant liquid container 2.
  • the refrigerant liquid container 2 may contain means for separating refrigerant liquid from refrigerant vapor.
  • a second gas vent 24 may be connected to the refrigerant liquid container 2.
  • the outlet of the gas vent 24 may further be connected to a suction side of a refrigeration compressor (not shown).
  • the refrigerant vapor may be compressed back to liquid phase and be recirculated to the refrigerant liquid container 2.
  • the refrigerant vapor may be fed to the gas injector 16 and be used as the gas supplied by the gas injector 16.
  • the refrigerant vapor may even be fed to the compressor 28 for further use in the gas injector 16.
  • the refrigerating device 1 may comprise a refrigerant in feed conduit 26 connected directly to the refrigerant liquid container 2 or to the return conduit 10.
  • the in feed conduit 26 is used to replace refrigerant that has evaporated and has left the refrigerating device 1.
  • the evaporated refrigerant may leave the refrigerating device 1 via either of the first and second gas vents mentioned above.
  • Refrigerant liquid is contained in the refrigerant liquid container 2. Due to the density pi of the refrigerant liquid and the gravity the pressure increases in the refrigerant liquid container 2 and the sinking conduit 4 in proportion to the depth below the refrigerant liquid level. The pressure in one point is proportional to the height of refrigerant liquid above it and the density of the refrigerant liquid. Thus, the increase in pressure from point A to point B is p ⁇ *g ⁇ h, where pi is the density of the liquid, g is the gravity acceleration constant and h is the height between point A and point B.
  • the static pressure in point C is equal to the pressure in point B since these points are on the same level.
  • Refrigerant vapor is injected via the gas injector 16 at point C and the refrigerant vapor bubbles, with significantly lower density, will rise upwards together with the refrigerant liquid in the rising conduit 6.
  • the gas liquid separator 18, at the end of the rising conduit 6, directs the liquid flow to the inlet 12 of the evaporator 8 and directs the refrigerant vapor via the gas purge conduit 22 back to the refrigerant liquid container 2.
  • the vapor directed from the gas liquid separator 18 is then directed back to the refrigerant liquid container 2 via the return conduit 10.
  • the vapor from the pressure regulating device 20 is recirculated back to the refrigerant liquid container 2.
  • the vapor may be vented via the gas vent 24.
  • the outlet of the gas vent 24 may further be connected to the suction side of the refrigeration compressor (not shown).
  • the refrigerant vapor may be compressed back to liquid phase and be recirculated to the refrigerant liquid container 2.
  • the refrigerant vapor be fed to the gas injector 16 and be used as the gas supplied by the gas injector 16.
  • the refrigerant vapor may even be fed to the compressor 28 for further use in the gas injector 16.
  • refrigerant liquid also can be fed via the gas injector 16, then in the form of a 2-phase flow of mixed liquid and vapor.
  • the refrigerant liquid may be pressurized and may be at least partly vaporized by expansion. The pressure of the liquid is decreased and a part of the liquid is vaporized due to the expansion.
  • the refrigerant liquid may be subjected to expansion through a valve and thereafter being supplied to the rising conduit 6 via the gas injector 16.
  • FIG. 1 Figures 2, 3 and 4 illustrate alternative embodiments of refrigerating devices 1 according to the invention.
  • the basic principles for the refrigerating devices according to the embodiments illustrated in figures 2, 3 and 4 are the same as for the embodiment illustrated in figure 1.
  • FIG. 2 illustrates an alternative embodiment of the inventive refrigerating device 1 in which the refrigerant liquid container 2 is used as a sinking conduit 4 and the rising conduit 6 is located inside the refrigerant liquid container 2 used as the sinking conduit 4.
  • the sinking conduit 4 is thus formed by the wall of the refrigerant liquid container 2 and the wall of the rising conduit 6.
  • the wall of the refrigerant liquid container 2 may be annular.
  • the wall of the rising conduit 6 may be annular.
  • the rising conduit 6 may be centrally positioned in the refrigerant liquid container 2. Alternatively, the rising conduit 6 may be positioned shifted towards one side of the liquid container 2.
  • the sinking conduit 4 is extending downwardly to a connection with the rising conduit 6.
  • the rising conduit 6 is extending upwardly from the connection with the sinking conduit 4. As mentioned before, the rising conduit 6 may be positioned vertically or sloped or a combination of these positions. The rising conduit 6 may even have horizontal sections.
  • the evaporator 8 has an inlet 12 connected downstream to the rising conduit 6 and an outlet 14 connected to the refrigerant liquid container 2 via the return conduit 10.
  • the return conduit 10 may be positioned vertically, horizontally, sloped or a combination of these positions.
  • Refrigerant liquid is contained in the refrigerant liquid container 2.
  • the level of refrigerant liquid is either above, lateral to or below the evaporator 8.
  • the refrigerating device 1 further comprises a gas injector 16 connected to the rising conduit 6.
  • the gas injector 16 is adapted to supply gas to the rising conduit 6.
  • this embodiment of the refrigerating device 1 may comprise a gas liquid separator 18.
  • the gas liquid separator 18 is arranged downstream the rising conduit 6 and upstream the evaporator 8.
  • the gas liquid separator 18 directs the liquid flow to the inlet 12 of the evaporator 8 and directs the gas via a gas purge conduit 22.
  • the gas may be directed back to the refrigerant liquid container 2. Please see above for a more detailed description of the gas liquid separator 18.
  • this embodiment of the refrigerating device 1 may comprise a pressure regulating device 20.
  • the pressure regulating device 20 is connected to the gas liquid separator 18.
  • the pressure regulating device 20 is integrated in the gas purge conduit 22.
  • the pressure regulating device 20 is used to allow flow of gas from the gas liquid separator 18 and to regulate the pressure in the gas liquid separator 18.
  • An advantage with the design of the inventive refrigerating device 1 according to figure 2 is that the refrigerating device 1 may be compact.
  • FIG 3 illustrates yet an alternative embodiment of the inventive refrigerating device 1.
  • the refrigerant liquid container 2 is used as a sinking conduit 4 and the rising conduit 6 is located inside the refrigerant liquid container 2 used as the sinking conduit 4.
  • the sinking conduit 4 is thus formed by the wall of the refrigerant liquid container 2 and the wall of the rising conduit 6.
  • the wall of the refrigerant liquid container 2 may be annular.
  • the wall of the rising conduit 6 may be annular.
  • the rising conduit 6 may be centrally positioned in the refrigerant liquid container 2. Alternatively, the rising conduit 6 may be positioned shifted towards one side of the liquid container 2.
  • the sinking conduit 4 is extending downwardly to a connection with the rising conduit 6.
  • the rising conduit 6 is extending upwardly from the connection with the sinking conduit 4. As mentioned before, the rising conduit 6 may be positioned vertically or sloped or a combination of these positions. The rising conduit 6 may even have horizontal sections.
  • the evaporator 8 has an inlet 12 connected downstream to the rising conduit 6 and an outlet 14 connected to the refrigerant liquid container 2 via the return conduit 10.
  • the return conduit 10 may be positioned vertically, horizontally, sloped or a combination of these positions.
  • Refrigerant liquid is contained in the refrigerant liquid container 2.
  • the level of refrigerant liquid is either above, lateral to or below the evaporator 8.
  • the refrigerating device 1 further comprises a gas injector 16 connected to the rising conduit 6.
  • the gas injector 16 is adapted to supply gas to the rising conduit 6.
  • the gas is supplied in order to allow gas to rise together with the refrigerant in the rising conduit 6 and thereby reducing the total density of the mixture of refrigerant and gas relative the density of refrigerant and thereby according to what is described above increasing the pressure in the rising conduit 6.
  • This embodiment also comprises a conduit having one end connected to the rising conduit 6 and the other end being located inside the refrigerant liquid container 2. The end being located inside the refrigerant liquid container 2 is open. Additionally, the open end being located inside the refrigerant liquid container 2 is above the level of refrigerant liquid in the refrigerant liquid container 2. Thus, the gas supplied via the gas injector 16 may escape from the refrigerant liquid and are being supplied to the refrigerant liquid
  • conduit having one end connected to the rising conduit 6 and the other end being located inside the refrigerant liquid container 2 is forming a gas liquid separator 18.
  • FIG. 4 illustrates yet an alternative embodiment of the inventive refrigerating device 1.
  • This embodiment of the refrigerating device 1 further comprises a second sinking conduit 5.
  • the refrigerant liquid container 2 is used as a sinking conduit 4 and the rising conduit 6 is located inside the refrigerant liquid container 2 used as the sinking conduit 4.
  • the sinking conduit 4 is formed by the wall of the refrigerant liquid container 2, the wall of the rising conduit 6 and the wall of the second sinking conduit 5.
  • the wall of the refrigerant liquid container 2 may be annular. Also the wall of the rising conduit 6 may be annular.
  • the wall of the second sinking conduit 5 may be annular.
  • the sinking conduit 4 is extending downwardly to a connection with the rising conduit 6.
  • the rising conduit 6 is extending upwardly from the connection with the sinking conduit 4.
  • the rising conduit 6 may be positioned vertically or sloped or a combination of these positions.
  • the rising conduit 6 may even have horizontal sections.
  • the rising conduit 6 is connected to an inlet of the second sinking conduit 5.
  • the upper end of the second sinking conduit 5 is open and is thus forming a gas liquid separator 18.
  • the rising conduit 6 is used to pump refrigerant liquid to the second sinking conduit 5.
  • the second sinking conduit 5 is located downstream the rising conduit 6.
  • the inlet of the second sinking conduit 5 is located above the level of the refrigerant liquid in the refrigerant liquid container 2, i.e. the sinking conduit 4.
  • the second sinking conduit 5 is extending downwardly to a connection with the inlet 12 of the evaporator 8.
  • the second sinking conduit 5 may be positioned vertically or sloped or a combination of these positions.
  • the second sinking conduit 5 may even have horizontal sections.
  • the gas injector 16 is connected to the rising conduit 6 in order to supply gas and in order to allow gas to rise together with the refrigerant in the rising conduit 6 and thereby reducing the total density of the mixture of refrigerant and gas relative the density of refrigerant and thereby according to what is described above being able to increase the level of the refrigerant liquid in the rising conduit 6.
  • the level of refrigerant liquid in the rising conduit 6 may be increased to double the height as compared with the level of refrigerant liquid in the rising conduit 6 when no gas is supplied thereto.
  • the evaporator 8 has an inlet 12 connected downstream to the second sinking conduit 5 and an outlet 14 connected to the refrigerant liquid container 2 via the return conduit 10.
  • the return conduit 10 may be positioned vertically, horizontally, sloped or a combination of these positions.
  • An advantage with the design according to figure 4 of the inventive refrigerating device 1 is that it may be compact. Another advantage with the design according to figure 4 of the inventive refrigerating device 1 is that it does not build downwards in height.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

La présente invention porte sur un dispositif de réfrigération et sur un procédé pour délivrer une tête supplémentaire pour supporter un système d'alimentation en liquide de réfrigération. Le dispositif de réfrigération comprend un récipient de liquide de réfrigération (2), un conduit d'immersion (4) et un conduit de rinçage (6), le conduit d'immersion (4) s'étendant vers le bas vers un raccord avec le conduit de rinçage (6), le conduit de rinçage (6) s'étendant vers le haut à partir du raccord avec le conduit d'immersion (4). Le dispositif de réfrigération comprend en outre un évaporateur (8) ayant une entrée (12) reliée en aval au conduit de rinçage (6) et une sortie (14) raccordée au récipient de liquide de réfrigération (2) par l'intermédiaire d'un conduit de retour (10), et un injecteur de gaz (16) raccordé au conduit de rinçage (6), apte à délivrer un gaz afin de permettre au gaz de s'élever avec le réfrigérant liquide dans le conduit de rinçage (6) de façon à réduire la densité totale du mélange de réfrigérant liquide et de gaz par rapport à la densité de réfrigérant liquide.
EP10794456.3A 2009-06-29 2010-06-24 Dispositif et procédé pour délivrer une tête supplémentaire pour supporter un système d'alimentation en liquide de réfrigération Withdrawn EP2449322A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0900890 2009-06-29
PCT/SE2010/050724 WO2011002402A1 (fr) 2009-06-29 2010-06-24 Dispositif et procédé pour délivrer une tête supplémentaire pour supporter un système d'alimentation en liquide de réfrigération

Publications (2)

Publication Number Publication Date
EP2449322A1 true EP2449322A1 (fr) 2012-05-09
EP2449322A4 EP2449322A4 (fr) 2017-05-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10794456.3A Withdrawn EP2449322A4 (fr) 2009-06-29 2010-06-24 Dispositif et procédé pour délivrer une tête supplémentaire pour supporter un système d'alimentation en liquide de réfrigération

Country Status (8)

Country Link
US (1) US20120090339A1 (fr)
EP (1) EP2449322A4 (fr)
JP (2) JP5778140B2 (fr)
CN (1) CN102803870B (fr)
AU (1) AU2010266750B2 (fr)
BR (1) BRPI1011880A2 (fr)
CA (1) CA2764959A1 (fr)
WO (1) WO2011002402A1 (fr)

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CN107076522A (zh) * 2014-09-26 2017-08-18 日本电气株式会社 冷媒中间装置、包含冷媒中间装置的冷却装置及冷却方法
DE102015000238A1 (de) * 2015-01-08 2016-07-14 Optimize Gmbh Latentwärmespeicher und Verfahren zu dessen Betrieb
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CN102803870A (zh) 2012-11-28
JP2015129631A (ja) 2015-07-16
WO2011002402A1 (fr) 2011-01-06
JP5778140B2 (ja) 2015-09-16
BRPI1011880A2 (pt) 2016-03-29
AU2010266750A1 (en) 2011-12-15
CN102803870B (zh) 2014-10-01
JP2012532304A (ja) 2012-12-13
CA2764959A1 (fr) 2011-01-06
AU2010266750B2 (en) 2013-04-18
EP2449322A4 (fr) 2017-05-03

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