EP1975526A1 - Gas-liquid separator and refrigeration device with the gas-liquid separator - Google Patents
Gas-liquid separator and refrigeration device with the gas-liquid separator Download PDFInfo
- Publication number
- EP1975526A1 EP1975526A1 EP07706819A EP07706819A EP1975526A1 EP 1975526 A1 EP1975526 A1 EP 1975526A1 EP 07706819 A EP07706819 A EP 07706819A EP 07706819 A EP07706819 A EP 07706819A EP 1975526 A1 EP1975526 A1 EP 1975526A1
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- EP
- European Patent Office
- Prior art keywords
- gas
- liquid
- vessel body
- refrigerant
- liquid separator
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- 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.)
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Classifications
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- 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
- F25B2400/13—Economisers
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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
- 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
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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
Definitions
- This invention relates to gas-liquid separators for separating gas-liquid two-phase fluid into liquid fluid and gaseous fluid and refrigeration systems including a refrigerant circuit with such a gas-liquid separator.
- Conventional refrigeration systems include those including a refrigerant circuit operating in a two-stage compression and two-stage expansion refrigeration cycle. Furthermore, among such refrigeration systems include those including a gas-liquid separator for separating gas-liquid two-phase fluid into liquid fluid and gaseous fluid (see, for example, Patent Document 1).
- the refrigeration system disclosed in the above Patent Document 1 is an air conditioning system including a refrigerant circuit operating in a two-stage compression and two-stage expansion refrigeration cycle during a heating operation.
- the refrigerant circuit is provided with a gas-liquid separator for separating gas-liquid two-phase refrigerant into gas refrigerant and liquid refrigerant.
- refrigerant discharged from a high-pressure stage compressor condenses in an indoor heat exchanger to heat room air.
- the condensed refrigerant passes through an intermediate expansion valve to reach an intermediate-pressure, gas-liquid two-phase state, is then introduced into the gas-liquid separator and is separated therein into gas refrigerant and liquid refrigerant.
- the evaporated refrigerant is sucked into a low-pressure stage compressor and compressed therein into intermediate-pressure discharge refrigerant.
- the intermediate-pressure discharge refrigerant is joined with gas refrigerant coming from the gas-liquid separator and the refrigerant mixture is sucked into the high-pressure stage compressor and compressed therein to a high pressure.
- an opening end of the liquid outflow pipe ( c ) is located in the liquid refrigerant pool ( e )
- an opening end of the gas outflow pipe ( d ) is located in the gas refrigerant pool ( f ) and an opening end of the inflow pipe ( b ) is located at a height between the opening end of the liquid outflow pipe ( c ) and the opening end of the gas outflow pipe ( d ).
- FIG. 9 Another example of the gas-liquid separator is shown in Figure 9 .
- a gas outflow pipe ( d ) is connected to the top of a vertically long vessel body ( a ) to pass through the top.
- An inflow pipe is connected to an upper part of the peripheral wall of the vessel body ( a ) to pass through it.
- a liquid outflow pipe is connected to a lower part of the peripheral wall of the vessel body ( a ) to pass through it.
- refrigerant flowing through the inflow pipe ( b ) is gas-liquid two-phase refrigerant and, therefore, may cause a slug flow in which large gas bubbles of gas refrigerant and masses of liquid refrigerant irregularly flow. If such a slug flow is introduced through the inflow pipe (b) into the vessel body ( a ), a problem arises that the liquid level of the liquid refrigerant pool ( e ) is disturbed and the disturbance of the liquid level incurs spattering of the liquid refrigerant, resulting in mixing of the liquid refrigerant into gas refrigerant flowing out of the vessel body ( a ) and through the gas outflow pipe ( d ).
- the vessel body ( a ) is vertically long and the opening end of the inflow pipe ( b ) is close to opposite part of the inside wall of the vessel body ( a ). Therefore, if large gas bubbles in a slug flow flow through the inflow pipe ( b ) so that refrigerant therein temporarily reaches a high flow rate, the gas-liquid two-phase refrigerant having flowed through the inflow pipe ( b ) into the vessel body ( a ) hits the inside wall of the vessel body ( a ) and spatters, as shown in the arrows in Figure 9 .
- the known gas-liquid separators have a problem that if gas-liquid two-phase refrigerant flowing through the inflow pipe forms a slug flow, they deteriorate its performance of separation of the gas-liquid two-phase refrigerant or deteriorate the reliability as a gas-liquid separator. Furthermore, if the gas-liquid separator in a refrigeration system varies its refrigerant separation performance because of flow conditions of gas-liquid two-phase refrigerant, this causes variations in evaporation capacity of the evaporator and variations in condensation capacity of the condenser. As a result, a problem arises that the refrigeration system cannot perform a stable operation.
- the present invention has been made in view of the foregoing points and, therefore, an object thereof is to enhance the refrigerant separation performance of a gas-liquid separator for separating gas-liquid two-phase fluid into gaseous fluid and liquid fluid and stabilize the operation of a refrigeration system including the gas-liquid separator.
- a first aspect of the invention is directed to a gas-liquid separator including: a vessel body ( 16 ) for separating gas-liquid two-phase fluid into liquid fluid and gaseous fluid; an inflow pipe ( 20 ) through which the gas-liquid two-phase fluid flows into the vessel body ( 16 ); a liquid outflow pipe ( 30 ) through which liquid fluid in the vessel body ( 16 ) flows out of the vessel body (16); and a gas outflow pipe ( 40 ) through which gaseous fluid in the vessel body ( 16 ) flows out of the vessel body (16). Furthermore, the inflow pipe ( 20 ) is provided with a fragmentation device ( 50 ) for fragmentizing gas bubbles in the gas-liquid two-phase fluid.
- the gas-liquid two-phase fluid is separated into liquid fluid and gaseous fluid.
- a pool ( 23 ) of liquid fluid is formed in a lower side of the interior of the vessel body ( 16 ), while a pool ( 24 ) of gaseous fluid is formed in an upper side thereof. Since regularly flowing gas-liquid two-phase fluid is introduced into the vessel body ( 16 ), this reduces the disturbance of the liquid level of the pool ( 23 ) of liquid fluid, the spattering of the liquid fluid due to the disturbance and the mixing of gas bubbles into the pool ( 23 ) of liquid fluid.
- a second aspect of the invention is the gas-liquid separator according to the first aspect of the invention, wherein the fragmentation device ( 50 ) comprises a mesh member (50).
- the fragmentation device ( 50 ) comprises a mesh member ( 50 )
- gas bubbles are surely fragmentized and the resistance that gas-liquid two-phase fluid meets on the fragmentation device ( 50 ) becomes relatively small.
- a third aspect of the invention is the gas-liquid separator according to the first aspect of the invention, wherein an opening end ( 21 ) of the inflow pipe ( 20 ) and an opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in an upper part of the vessel body ( 16 ) and arranged to face each other at opposite sides of the vessel body ( 16 ), and an opening end ( 31 ) of the liquid outflow pipe ( 30 ) is placed in a lower part of the vessel body ( 16 ).
- an opening end ( 21 ) of the inflow pipe ( 20 ) and an opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed to face each other in an upper part of the vessel body ( 16 ) and at opposite sides of the vessel body ( 16 ). Therefore, the opening end ( 21 ) of the inflow pipe ( 20 ) is free from being immersed in the pool ( 23 ) of liquid fluid in a lower part of the vessel body ( 16 ). As a result, it is prevented that gas-liquid two-phase fluid is directly introduced into the pool ( 23 ) of liquid fluid to mix gas bubbles into the pool ( 23 ) of liquid fluid and disturb the liquid level of the pool ( 23 ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) is prevented from being close to opposite part of the inside wall of the vessel body ( 16 ). This reduces the likelihood of hitting of gas-liquid two-phase fluid having flowed into the vessel body ( 16 ) through the inflow pipe ( 20 ) against the inside wall of the vessel body ( 16 ) and in turn the likelihood of the resultant spattering of the gas-liquid two-phase fluid.
- a ninth aspect of the invention is directed to a gas-liquid separator including: a vessel body ( 16 ) for separating gas-liquid two-phase fluid into liquid fluid and gaseous fluid; an inflow pipe ( 20 ) through which the gas-liquid two-phase fluid flows into the vessel body ( 16 ); a liquid outflow pipe ( 30 ) through which liquid fluid in the vessel body ( 16 ) flows out of the vessel body ( 16 ); and a gas outflow pipe ( 40 ) through which gaseous fluid in the vessel body ( 16 ) flows out of the vessel body ( 16 ).
- the vessel body ( 16 ) is formed to have a longer horizontal dimension than the vertical dimension.
- an opening end ( 21 ) of the inflow pipe ( 20 ) and an opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in an upper part of the vessel body ( 16 ) and arranged to face each other at longitudinally opposite sides of the vessel body ( 16 ). Furthermore, an opening end ( 31 ) of the liquid outflow pipe ( 30 ) is placed in a lower part of the vessel body (16).
- an opening end ( 21 ) of the inflow pipe ( 20 ) and an opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in an upper part of the vessel body ( 16 ) and arranged to face each other at longitudinally opposite sides of the vessel body ( 16 ). Therefore, the distance between the opening end ( 21 ) of the inflow pipe ( 20 ) and the opposite part of the inside wall of the vessel body ( 16 ) becomes long. Thus, gas-liquid two-phase fluid flowing through the inflow pipe ( 20 ) into the vessel body ( 16 ) is surely prevented from hitting the inside wall of the vessel body ( 16 ) and thereby spattering.
- the opening end ( 41 ) of the gas outflow pipe ( 40 ) is surely spaced apart from the opening end ( 21 ) of the inflow pipe ( 20 ), gas-liquid two-phase fluid flowing through the inflow pipe ( 20 ) into the vessel body ( 16 ) is prevented from directly flowing out through the opening end ( 41 ) of the gas outflow pipe ( 40 ).
- a fourth aspect of the invention is the gas-liquid separator according to the first aspect of the invention, wherein the vessel body ( 16 ) is installed so that the under surface ( 16d ) thereof inclines downward towards a point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ).
- a tenth aspect of the invention is the gas-liquid separator according to the ninth aspect of the invention, wherein the vessel body ( 16 ) is installed so that the under surface ( 16d ) thereof inclines downward towards a point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ).
- the under surface ( 16d ) of the vessel body ( 16 ) means a surface located on the under side of the vessel body ( 16 ) and includes not only a flat surface but also, for example, a curved surface portion formed continuously with the other surface portions of the vessel body ( 16 ). According to the fourth and tenth aspects of the invention, even if the amount of liquid fluid in the vessel body ( 16 ) is small, the vessel body ( 16 ) surely has a pool of liquid fluid around the opening end ( 31 ) of the liquid outflow pipe ( 30 ) and thereby allows the liquid fluid to flow out through the liquid outflow pipe ( 30 ).
- a fifth aspect of the invention is the gas-liquid separator according to the first aspect of the invention, wherein the inflow pipe ( 20 ) is horizontally extended to the interior of the vessel body ( 16 ) and the opening end ( 21 ) of the inflow pipe ( 20 ) opens obliquely downward.
- An eleventh aspect of the invention is the gas-liquid separator according to the ninth aspect of the invention, wherein the inflow pipe ( 20 ) is horizontally extended to the interior of the vessel body ( 16 ) and the opening end ( 21 ) of the inflow pipe ( 20 ) opens obliquely downward.
- gas-liquid two-phase fluid is free from hitting the inside wall of the vessel body ( 16 ) and thereby spattering.
- the gas-liquid two-phase fluid falls more gently to the liquid level of liquid fluid in the vessel body ( 16 ) than the case of vertically falling, this reduces the disturbance of the liquid level of the pool ( 23 ) of liquid fluid and the mixing of gas bubbles into the pool ( 23 ) of liquid fluid.
- a sixth aspect of the invention is the gas-liquid separator according to the first aspect of the invention, wherein the inflow pipe ( 20 ) is installed to horizontally extend.
- a twelfth aspect of the invention is the gas-liquid separator according to the ninth aspect of the invention, wherein the inflow pipe ( 20 ) is installed to horizontally extend.
- the inflow pipe ( 20 ) is installed to horizontally extend. Therefore, even if gas-liquid two-phase fluid forms a slug flow, large bubble masses of gaseous fluid in the slug flow are likely to be broken.
- a seventh aspect of the invention is the gas-liquid separator according to the third aspect of the invention, wherein the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed above the opening end ( 21 ) of the inflow pipe ( 20 ).
- a thirteenth aspect of the invention is the gas-liquid separator according to the ninth aspect of the invention, wherein the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed above the opening end ( 21 ) of the inflow pipe ( 20 ).
- the refrigerant circuit (10) is configured so that a first expansion mechanism ( 17 ), an evaporator ( 13 ), a low-pressure stage compressor ( 11 ), a high-pressure stage compressor ( 12 ), a condenser ( 14 ) and a second expansion mechanism ( 15 ) are connected in this order therein to operate in a two-stage compression and two-stage expansion refrigeration cycle.
- the inflow pipe ( 20 ) of the gas-liquid separator ( 18 ) is connected to the downstream side of the second expansion valve ( 15 ) so that gas-liquid two-phase refrigerant flowing through the condenser ( 14 ) and then reduced to an intermediate pressure in the second expansion mechanism ( 15 ) flows into the vessel body ( 16 ) of the gas-liquid separator ( 18 ). Furthermore, the liquid outflow pipe ( 30 ) of the gas-liquid separator ( 18 ) is connected to the upstream side of the first expansion mechanism ( 17 ) so that liquid refrigerant separated by the gas-liquid separator ( 18 ) is fed to the first expansion mechanism ( 17 ).
- liquid fluid flowing from the pool ( 23 ) of liquid fluid to the liquid outflow pipe ( 30 ) can be prevented from mixing-in of gas refrigerant and gaseous fluid flowing from the pool ( 24 ) of gaseous fluid to the gas outflow pipe ( 40 ) can be prevented from mixing-in of liquid fluid. Therefore, the gas-liquid separation performance can be enhanced.
- the fragmentation device ( 50 ) comprises a mesh member ( 50 )
- gas bubbles can surely be fragmentized and the resistance that gas-liquid two-phase fluid meets on the fragmentation device ( 50 ) can be relatively small.
- the gas-liquid two-phase fluid flowing into the vessel body ( 16 ) reaches a further regular and stable flow condition.
- the opening end ( 21 ) of the inflow pipe ( 20 ) and the opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in an upper part of the vessel body ( 16 ) and arranged to face each other at longitudinally opposite sides of the vessel body ( 16 ), the distance between the opening end ( 21 ) of the inflow pipe ( 20 ) and the opposite part of the inside wall of the vessel body ( 16 ) can be long.
- gas-liquid two-phase fluid flowing through the inflow pipe ( 20 ) into the vessel body ( 16 ) can surely be prevented from hitting the inside wall of the vessel body ( 16 ) and thereby spattering.
- the opening end ( 41 ) of the gas outflow pipe ( 40 ) can surely be spaced apart from the opening end ( 21 ) of the inflow pipe ( 20 ). Therefore, gas-liquid two-phase fluid flowing through the inflow pipe ( 20 ) into the vessel body ( 16 ) can be prevented from directly flowing out through the opening end ( 41 ) of the gas outflow pipe ( 40 ).
- liquid fluid flowing from the pool ( 23 ) of liquid fluid to the liquid outflow pipe ( 30 ) can surely be prevented from mixing-in of gaseous fluid.
- gaseous fluid flowing from the pool ( 24 ) of gaseous fluid to the gas outflow pipe ( 40 ) can surely be prevented from mixing-in of liquid fluid. As a result, the gas-liquid separation performance can be enhanced.
- the vessel body ( 16 ) since the under surface ( 16d ) of the vessel body ( 16 ) is inclined downward towards a point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ), even if the amount of liquid fluid in the vessel body ( 16 ) is small, the vessel body ( 16 ) can surely have a pool of liquid fluid around the opening end ( 31 ) of the liquid outflow pipe ( 30 ). This ensures that liquid fluid flows out through the liquid outflow pipe ( 30 ), and prevents that during the outflow of liquid fluid, gaseous fluid is mixed into the liquid fluid flowing out therethrough.
- the inflow pipe ( 20 ) is horizontally extended to the interior of the vessel body ( 16 ) and the opening end ( 21 ) of the inflow pipe ( 20 ) opens obliquely downward, gas-liquid two-phase fluid can be prevented from hitting the inside wall of the vessel body ( 16 ) and thereby spattering.
- the gas-liquid two-phase fluid can fall more gently to the liquid level of liquid fluid in the vessel body ( 16 ) than the case of vertically falling, this reduces the disturbance of the liquid level of the pool ( 23 ) of liquid fluid and the mixing of gas bubbles into the pool ( 23 ).
- the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed above the opening end ( 21 ) of the inflow pipe ( 20 ), gas-liquid two-phase fluid having flowed through the inflow pipe ( 20 ) into the vessel body ( 16 ) can be prevented from falling towards the opening end ( 41 ) of the gas outflow pipe ( 40 ) and directly flowing out through it.
- the refrigerant circuit ( 10 ) including the gas-liquid separator ( 18 ) according to the first or ninth aspect of the invention operates in a two-stage compression and two-stage expansion refrigeration cycle, gas-liquid two-phase refrigerant reduced to an intermediate pressure by the second expansion mechanism ( 15 ) can surely be separated into liquid refrigerant and gas refrigerant by the gas-liquid separator ( 18 ).
- gas refrigerant to be fed to the suction side of the high-pressure stage compressor ( 12 ) can be prevented from mixing-in of liquid refrigerant and liquid refrigerant to be fed through the first expansion mechanism ( 17 ) to the evaporator ( 13 ) can be prevented from mixing-in of gas refrigerant.
- the evaporation capacity of the evaporator ( 13 ) and the condensation capacity of the condenser ( 14 ) are stabilized, thereby stabilizing the operation of the system. Therefore, the reliability of the system can be enhanced.
- a refrigeration system ( 1 ) is used to perform an operation of refrigerating the interior of a storage.
- the refrigeration system ( 1 ) includes a refrigerant circuit ( 10 ) operating in a two-stage compression and two-stage expansion refrigeration cycle.
- the discharge side of the low-pressure stage compressor ( 11 ) is connected to the suction side of the high-pressure stage compressor ( 12 ).
- Each of the low-pressure stage compressor ( 11 ) and high-pressure stage compressor ( 12 ) is constituted, for example, by a scroll compressor.
- the refrigeration heat exchanger ( 13 ) is placed in the storage and configured as an evaporator in which refrigerant can evaporate to cool the interior of the storage.
- the refrigeration heat exchanger ( 13 ) is connected at its exit side to the suction side of the low-pressure stage compressor ( 11 ).
- the refrigeration heat exchanger ( 13 ) is constituted, for example, by a fin-and-tube heat exchanger.
- the refrigeration heat exchanger ( 13 ) is connected at its entrance side to the exit side of the main expansion valve ( 17 ).
- the main expansion valve ( 17 ) is an electronic expansion valve controllable in opening and is configured as a first expansion mechanism.
- the exit side of the intermediate expansion valve ( 15 ) is connected via the gas-liquid separator ( 18 ) to the entrance side of the main expansion valve ( 17 ), which is the upstream side thereof, and the suction side of the high-pressure stage compressor ( 12 ).
- the first through hole ( 16a ) is formed in an upper part of the peripheral wall of the vessel body ( 16 )
- the second through hole ( 16b ) is formed on the opposite side of the peripheral wall of the vessel body ( 16 ) to the first through hole ( 16a ) and at a higher point than the first through hole ( 16a )
- the third through hole ( 16c ) is formed in a lower part of the peripheral wall of the vessel body ( 16 ).
- a pool ( 23 ) of liquid refrigerant is formed in a lower side thereof and a pool ( 24 ) of gas refrigerant is formed above the pool ( 23 ) of liquid refrigerant.
- the inflow pipe ( 20 ) is disposed to horizontally extend over the length thereof. Furthermore, the inflow pipe ( 20 ) is extended to the interior of the vessel body ( 16 ) by passing through the first through hole ( 16a ) of the vessel body ( 16 ) and is disposed substantially perpendicularly to the peripheral wall of the vessel body ( 16 ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) is placed in the vessel body ( 16 ) closer to part of the peripheral wall having the first through hole ( 16a ) than the horizontal center of the vessel body ( 16 ). Furthermore, the opening end ( 21 ) of the inflow pipe ( 20 ) opens obliquely downward at an angle of approximately 45° to the vertical direction.
- the inflow pipe ( 20 ) is provided with a mesh member ( 50 ) as a feature of the present invention. Specifically, a through part of the inflow pipe ( 20 ) at which the inflow pipe ( 20 ) passes through the first through hole ( 16a ) of the vessel body ( 16 ) is brazed to the vessel body ( 16 ), and the mesh member ( 50 ) is placed in the inflow pipe ( 20 ) in the close vicinity of the through part.
- the mesh member ( 50 ) is composed of a wire mesh formed in a hollow conical shape, opening at the bottom of the cone and having the periphery of the cone netted with metal wires.
- the mesh member ( 50 ) is disposed so that its cone point is directed to the opening end ( 21 ).
- the inflow pipe (20) is configured so that refrigerant having flowed through the intermediate expansion valve ( 15 ) flows through the opening at the bottom of the mesh member ( 50 ) towards the cone point and, during the flow through the mesh member ( 50 ), passes through the wire mesh at the periphery of the cone.
- the gas outflow pipe ( 40 ) is extended to the interior of the vessel body ( 16 ) by passing through the second through hole ( 16b ) of the vessel body ( 16 ) and is disposed substantially perpendicularly to the peripheral wall of the vessel body ( 16 ).
- the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed in the vessel body ( 16 ) closer to part of the peripheral wall having the second through hole ( 16b ) than the horizontal center of the vessel body ( 16 ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) and the opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in the pool ( 24 ) of gas refrigerant in an upper part of the vessel body ( 16 ) and arranged to face each other at opposite sides of the vessel body ( 16 ). Furthermore, the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed above the opening end ( 21 ) of the inflow pipe ( 20 ).
- the liquid outflow pipe ( 30 ) passes through the third through hole ( 16c ) of the vessel body ( 16 ) and is disposed substantially perpendicularly to the peripheral wall of the vessel body ( 16 ).
- the opening end ( 31 ) of the liquid outflow pipe ( 30 ) is placed in the pool ( 23 ) of liquid refrigerant in a lower part of the vessel body ( 16 ).
- the compressors ( 11 , 12 ) Upon startup of the refrigeration system ( 1 ), in the refrigerant circuit ( 10 ), the compressors ( 11 , 12 ) start to operate, the openings of the expansion valves ( 15 , 17 ) are appropriately set and refrigerant circulates through the refrigerant circuit ( 10 ) in a direction of the arrows in Figure 1 .
- the refrigerant in a gas-liquid two-phase state flows through the inflow pipe ( 20 ) of the gas-liquid separator ( 18 ) and passes through the mesh member ( 50 ).
- gas bubbles in the refrigerant in a gas-liquid two-phase state are fragmentized.
- gas-liquid two-phase refrigerant in the inflow pipe ( 20 ) forms a slug flow so that gas bubbles ( 80 ) formed by large masses of gas refrigerant flow through the inflow pipe ( 20 ).
- gas bubbles ( 80 ) pass through the mesh member ( 50 ) and are thereby fragmentized into fine gas bubbles ( 81 ).
- the gas-liquid two-phase refrigerant becomes a homogeneous state in which fine gas bubbles ( 81 ) are dispersed in liquid refrigerant.
- the gas-liquid two-phase refrigerant is introduced into the interior of the vessel body ( 16 ) while being kept in its homogeneous state.
- the gas-liquid two-phase refrigerant is introduced into the interior of the vessel body ( 16 ) to gently fall from the opening end ( 21 ) opening downward at 45° to the vertical direction towards the pool ( 23 ) of liquid refrigerant.
- the gas-liquid two-phase refrigerant is thus introduced in a stable flow condition into the interior of the vessel body ( 16 ), this reduces the bubbling of the pool ( 23 ) of liquid refrigerant and resultant production of gas bubbles and reduces the disturbance of the liquid level of the pool ( 23 ) of liquid refrigerant and resultant spattering of liquid refrigerant. Then, the gas-liquid two-phase refrigerant introduced in the vessel body ( 16 ) is separated into liquid refrigerant and gas refrigerant.
- the gas refrigerant is accumulated in the gas refrigerant pool ( 24 ) in an upper part of the vessel body ( 16 ), while the liquid refrigerant is accumulated in the liquid refrigerant pool ( 23 ) in a lower part of the vessel body ( 16 ).
- the liquid refrigerant in the vessel body ( 16 ) then flows through the liquid outflow pipe ( 30 ), then passes through the main expansion valve ( 17 ) and is thereby reduced to a low pressure to expand.
- the expanded refrigerant takes heat from in-storage air during flow through the refrigeration heat exchanger ( 13 ), thereby evaporating and cooling the in-storage air.
- the evaporated refrigerant is sucked into the low-pressure stage compressor ( 11 ), compressed therein to an intermediate-pressure and then discharged therefrom. Then, the gas refrigerant in the vessel body ( 16 ) of the gas-liquid separator ( 18 ) is fed through the gas outflow pipe ( 40 ) to the discharged refrigerant of intermediate pressure and the refrigerant mixture is sucked into the high-pressure stage compressor ( 11 ).
- gas bubbles ( 80 ) of gas refrigerant in gas-liquid two-phase refrigerant flowing through the inflow pipe ( 20 ) can surely be fragmentized, whereby the gas-liquid two-phase refrigerant can be homogenized.
- the gas-liquid two-phase refrigerant is introduced in a regular and stable flow condition into the vessel body ( 16 ).
- the inflow pipe ( 20 ) is disposed to horizontally extend over the length thereof, large bubble masses of gas refrigerant in the gas-liquid two-phase fluid are likely to be broken, which restrains the production of large gas bubbles ( 80 ) in advance of the passage of the gas-liquid two-phase fluid through the mesh member ( 50 ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) and the opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in the pool ( 24 ) of gas refrigerant in an upper part of the vessel body ( 16 ) and arranged to face each other at opposite sides of the vessel body ( 16 ).
- the gas-liquid two-phase refrigerant can be prevented from being directly introduced from the opening end ( 21 ) of the inflow pipe ( 20 ) to the pool ( 23 ) of liquid refrigerant and the gas-liquid two-phase refrigerant flowing through the opening end ( 21 ) of the inflow pipe ( 20 ) into the vessel body ( 16 ) can be prevented from hitting the inside wall of the vessel body ( 16 ) and thereby spattering. Hence, it can be prevented that gas bubbles are mixed into the pool ( 23 ) of liquid refrigerant and that the liquid level of the pool ( 23 ) gets disturbed.
- the opening end ( 21 ) of the inflow pipe ( 20 ) opens obliquely downward by bending at approximately 45°, this surely prevents the gas-liquid two-phase refrigerant from hitting the peripheral wall of the vessel body ( 16 ). Furthermore, since the gas-liquid two-phase refrigerant falls more gently to the liquid level of the pool ( 23 ) of liquid refrigerant in the vessel body ( 16 ) than the case of vertically falling, this reduces the disturbance of the liquid level of the pool ( 23 ) of liquid refrigerant and the bubbling of the pool ( 23 ) of liquid refrigerant.
- the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed at an opposite side of the vessel body ( 16 ) to the opening end ( 21 ) of the inflow pipe ( 20 ) and above the opening end ( 21 ) of the inflow pipe ( 20 ). Therefore, the gas-liquid two-phase refrigerant having flowed through the inflow pipe ( 20 ) into the vessel body ( 16 ) can be prevented from directly flowing out through the gas outflow pipe ( 40 ).
- the opening end ( 31 ) of the liquid outflow pipe ( 30 ) is placed in the pool ( 23 ) of liquid refrigerant in a lower part of the vessel body ( 16 ), this prevents that during the outflow of liquid refrigerant through the liquid outflow pipe ( 30 ), gas refrigerant is mixed into the liquid refrigerant.
- liquid refrigerant flowing from the pool ( 23 ) of liquid refrigerant to the liquid outflow pipe ( 30 ) can be prevented from mixing-in of gas refrigerant.
- gas refrigerant flowing from the pool ( 24 ) of gas refrigerant to the gas outflow pipe ( 40 ) can be prevented from mixing-in of liquid refrigerant.
- the gas-liquid separation performance can be enhanced.
- the gas-liquid separator ( 18 ) of the refrigerant circuit ( 10 ) can be enhanced in gas-liquid separation performance, this stabilizes the evaporation capacity of the refrigeration heat exchanger ( 13 ) and the condensation capacity of the outdoor heat exchanger ( 14 ), thereby stabilizing the operation of the refrigeration system ( 1 ). As a result, the reliability of the refrigeration system ( 1 ) can be enhanced.
- This embodiment has a configuration that, although in Embodiment 1 the inflow pipe ( 20 ) of the gas-liquid separator ( 18 ) is composed of a single pipe, the inflow pipe ( 20 ) is, as shown in Figure 3 , composed of a main pipe part ( 20a ), a mesh pipe part ( 20b ) and a brazing pipe part ( 20c ) instead.
- the brazing pipe part ( 20c ) is brazed to the first through hole ( 16a ) in the vessel body ( 16 ).
- the mesh pipe part ( 20b ) is formed with a larger pipe diameter than the brazing pipe part ( 20c ) and the main pipe part ( 20a ) and includes a conically shaped mesh member ( 50 ) placed therein like Embodiment 1.
- the main pipe part ( 20a ) is connected through the mesh pipe part ( 20b ) to the brazing pipe part ( 20c ).
- the main pipe part ( 20a ), the mesh pipe part ( 20b ) and the brazing pipe part ( 20c ) are connected in this order.
- the inflow pipe ( 20 ) is composed of the three pipe parts ( 20a , 20b , 20c ), maintenance and replacement of the mesh member ( 50 ) can be easily performed. Furthermore, although in the mesh pipe part ( 20b ) the mesh member ( 50 ) resists the flow of refrigerant in a gas-liquid two-phase state, the resistance can be reduced by the formation of the mesh pipe part ( 20b ) with a slightly larger diameter than the other parts.
- This embodiment has a configuration that, although in Embodiment 1 the vessel body ( 16 ) of the gas-liquid separator ( 18 ) is formed in a substantially cylindrical shape, the under surface ( 16d ) of the vessel body ( 16 ) is, as shown in Figure 4 , inclined downward towards a point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ).
- the vessel body ( 16 ) since the under surface ( 16d ) of the vessel body ( 16 ) inclines downward towards a point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ), even if the amount of liquid refrigerant in the vessel body ( 16 ) is small, the vessel body ( 16 ) can surely have a pool of liquid refrigerant around the opening end ( 31 ) of the liquid outflow pipe ( 30 ). As a result, liquid refrigerant can surely flow out through the liquid outflow pipe ( 30 ). In addition, the opening end ( 31 ) of the liquid outflow pipe ( 30 ) is free from being exposed to the gas refrigerant pool ( 24 ). This prevents gas refrigerant from flowing out through the liquid outflow pipe ( 30 ).
- This embodiment is, like Embodiment 1, a refrigeration system that includes a refrigerant circuit operating in a two-stage compression and two-stage expansion refrigeration cycle and performs an operation of refrigerating the interior of a storage, but is different from Embodiment 1 only in the configuration of the gas-liquid separator ( 18 ) in the refrigerant circuit.
- the vessel body ( 16 ) is formed to have a longer horizontal dimension than the vertical dimension. Furthermore, the inflow pipe ( 20 ) of the gas-liquid separator ( 18 ) does not include a mesh member ( 50 ) serving as a fragmentation device.
- the vessel body ( 16 ) of the gas-liquid separator ( 18 ) is horizontally installed to match the axial direction of the cylindrical vessel body ( 16 ) in Embodiment 1 with the horizontal direction.
- the vessel body ( 16 ) is formed to have a longer horizontal dimension than the vertical dimension.
- one of two end surfaces of the cylinder of the vessel body ( 16 ) has a first through hole ( 16a ) formed in an upper part thereof and a third through hole ( 16c ) formed in a lower part thereof.
- the inflow pipe ( 20 ) and a liquid outflow pipe ( 30 ) are connected to the vessel body ( 16 ) to pass through the first through hole ( 16a ) and the third through hole ( 16c ), respectively, substantially perpendicular to the associated end surfaces of the vessel body ( 16 ).
- the other end surface of the vessel body ( 16 ) has a second through hole ( 16b ) formed above a point thereof corresponding to the first through hole ( 16a ).
- a gas outflow pipe ( 40 ) is connected to the vessel body ( 16 ) to pass through the second hole ( 16b ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) and the opening end ( 31 ) of the liquid outflow pipe ( 30 ) are placed in the vessel body ( 16 ) closer to the end surface having the first through hole ( 16a ) and the third through hole ( 16c ) than the horizontal center of the vessel body ( 16 ).
- the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed in the vessel body ( 16 ) closer to the end surface having the second through hole ( 16b ) than the horizontal center of the vessel body ( 16 ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) and the opening end ( 41 ) of the gas outflow pipe ( 40 ) are placed in the pool ( 24 ) of gas refrigerant in an upper part of the vessel body ( 16 ) and arranged to face each other at longitudinally opposite sides of the vessel body ( 16 ). Furthermore, the opening end ( 41 ) of the gas outflow pipe ( 40 ) is placed above the opening end ( 21 ) of the inflow pipe ( 20 ). On the other hand, the opening end ( 31 ) of the liquid outflow pipe ( 30 ) is placed in the pool ( 23 ) of liquid refrigerant in a lower part of the vessel body ( 16 ).
- this embodiment exhibits the following effects since the vessel body ( 16 ) is installed to match its horizontal direction ( 16 ) with its longitudinal direction.
- the distance between the opening end ( 21 ) of the inflow pipe ( 20 ) and an opposite part of the inside wall of the vessel body ( 21 ) can be long. Therefore, even if gas-liquid two-phase refrigerant flowing through the inflow pipe ( 20 ) forms a slug flow to temporarily reaches a high flow rate, the gas-liquid two-phase refrigerant having flowed through the inflow pipe ( 20 ) into the vessel body ( 16 ) can be prevented from hitting the inside wall of the vessel body ( 16 ).
- the opening end ( 21 ) of the inflow pipe ( 20 ) and the opening end ( 41 ) of the gas outflow pipe ( 40 ) can surely be spaced apart from each other, gas-liquid two-phase refrigerant having flowed through the inflow pipe ( 20 ) into the vessel body ( 16 ) can surely be prevented from directly flowing out through the gas outflow pipe ( 40 ).
- the gas-liquid separator ( 18 ) can prevent gas refrigerant flowing out through the gas outflow pipe ( 40 ) from mixing-in of liquid refrigerant and prevent liquid refrigerant flowing out through the liquid outflow pipe ( 30 ) from mixing-in of gas refrigerant.
- the gas-liquid separation performance of the gas-liquid separator ( 18 ) can be enhanced.
- gas-liquid two-phase refrigerant having flowed through the inflow pipe ( 20 ) into the vessel body ( 16 ) is prevented from hitting the inside wall of the vessel body ( 16 ) by matching the longitudinal direction of the vessel body ( 16 ) with the horizontal direction.
- the gas-liquid two-phase refrigerant having flowed through the inflow pipe ( 20 ) into the vessel body ( 16 ) can be further surely prevented from hitting the inside wall of the vessel body ( 16 ) by configuring the inflow pipe ( 20 ) so that the opening end ( 21 ) thereof opens obliquely downward like Embodiment 1.
- This embodiment is configured, as shown in Figure 6 , by placing a mesh member ( 50 ) in the inflow pipe ( 20 ) of the gas-liquid separator ( 18 ) according to Embodiment 2.
- gas-liquid two-phase refrigerant introduced through the inflow pipe ( 20 ) into the vessel body ( 50 ) is homogenized, whereby the flow condition of the gas-liquid two-phase refrigerant becomes regular and stable.
- the gas-liquid separation performance of the gas-liquid separator ( 18 ) can be further enhanced.
- This embodiment is configured, as shown in Figure 7 , by installing the vessel body ( 16 ) of the gas-liquid separator ( 18 ) according to Embodiment 2 to incline it downward from its one end surface through which the gas outflow pipe ( 40 ) passes towards its other end surface through which the liquid outflow pipe ( 30 ) passes.
- an under part ( 16d ) of the peripheral surface of the cylindrical vessel body ( 16 ) inclines downward towards a point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ) and is thereby constituted as the under surface of the vessel body ( 16 ).
- only the vessel body ( 16 ) is placed at an angle but the pipes ( 20 , 30 , 40 ) are horizontally placed in and around the vessel body ( 16 ).
- the vessel body ( 16 ) can surely have a pool of liquid refrigerant around the opening end ( 31 ) of the liquid outflow pipe ( 30 ) even if the amount of liquid refrigerant therein is small. This ensures that liquid refrigerant flows out through the liquid outflow pipe ( 30 ).
- the opening end ( 31 ) of the liquid outflow pipe ( 30 ) can be prevented from being exposed to the gas refrigerant pool ( 24 ). This prevents gas refrigerant from flowing out through the liquid outflow pipe ( 30 ).
- the under part ( 16d ) of the peripheral surface of the cylindrical vessel body ( 16 ) is inclined downward towards the point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ) by inclining the entire vessel body ( 16 ).
- the vessel body ( 16 ) may have a shape in which only its under part ( 16d ) inclines downward towards the point thereof corresponding to the opening end ( 31 ) of the liquid outflow pipe ( 30 ).
- the pipes ( 20 , 30 , 40 ) may be placed to incline in the same direction as the vessel body ( 16 ) by extending them to the interior of the vessel body ( 16 ) substantially vertically with respect to the end surfaces of the vessel body ( 16 ).
- the above embodiments may have the following configurations.
- the refrigeration system ( 1 ) is a refrigeration system performing an operation of refrigerating the interior of a storage
- the refrigeration system of the present invention is sufficient if it includes a refrigerant circuit including a gas-liquid separator and operating in a two-stage compression and two-stage expansion refrigeration cycle.
- the refrigeration system ( 1 ) may be, for example, a refrigeration system performing either one of cooling and heating operations for a room, or may be a refrigeration system switchable between the cooling and heating operations, or may be a refrigeration system switchable between a single-stage compression and single-stage expansion operation and a two-stage compression and two-stage expansion operation.
- the configurations of the compressors ( 11 , 21 ) and heat exchangers ( 13 , 14 ) in the refrigerant circuit are not particularly limited.
- the mesh member ( 50 ) placed in the inflow pipe ( 20 ) of the gas-liquid separator ( 18 ) is conically shaped
- the shape and configuration of the mesh member ( 50 ) are not particularly limited.
- the mesh member ( 50 ) may comprise a single or a plurality of overlaid mesh plates placed in the inflow pipe ( 20 ).
- the vessel body ( 16 ) of the gas-liquid separator ( 18 ) has a cylindrical shape
- the shape of the vessel body ( 16 ) is not particularly limited and may be a rectangular parallelepiped, for example.
- the present invention is useful for a gas-liquid separator and a refrigeration system including a refrigerant circuit with the gas-liquid separator.
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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)
- Degasification And Air Bubble Elimination (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006008897A JP2007192433A (ja) | 2006-01-17 | 2006-01-17 | 気液分離器及び該気液分離器を備えた冷凍装置 |
PCT/JP2007/050492 WO2007083624A1 (ja) | 2006-01-17 | 2007-01-16 | 気液分離器及び該気液分離器を備えた冷凍装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1975526A1 true EP1975526A1 (en) | 2008-10-01 |
Family
ID=38287577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07706819A Withdrawn EP1975526A1 (en) | 2006-01-17 | 2007-01-16 | Gas-liquid separator and refrigeration device with the gas-liquid separator |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100154467A1 (ja) |
EP (1) | EP1975526A1 (ja) |
JP (1) | JP2007192433A (ja) |
KR (1) | KR20080089478A (ja) |
CN (1) | CN101371085A (ja) |
AU (1) | AU2007206437A1 (ja) |
WO (1) | WO2007083624A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2012012491A3 (en) * | 2010-07-23 | 2012-05-03 | Carrier Corporation | Ejector cycle refrigerant separator |
CN105928270A (zh) * | 2016-06-06 | 2016-09-07 | 大连冷冻机股份有限公司 | 汽液分离型分液器 |
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SE531701C2 (sv) * | 2007-11-05 | 2009-07-14 | Alfa Laval Corp Ab | Vätskeavskiljare till ett förångningssystem |
US10401094B2 (en) | 2011-02-08 | 2019-09-03 | Carrier Corporation | Brazed plate heat exchanger for water-cooled heat rejection in a refrigeration cycle |
JP5240332B2 (ja) * | 2011-09-01 | 2013-07-17 | ダイキン工業株式会社 | 冷凍装置 |
CN103375953B (zh) * | 2012-04-27 | 2016-02-10 | 珠海格力电器股份有限公司 | 气液分离器及具有其的空调系统 |
JP5729359B2 (ja) * | 2012-07-09 | 2015-06-03 | 株式会社デンソー | 冷凍サイクル装置 |
JP6029879B2 (ja) * | 2012-07-10 | 2016-11-24 | シャープ株式会社 | ヒートポンプ式加熱装置 |
WO2014031728A1 (en) * | 2012-08-23 | 2014-02-27 | Shell Oil Company | System and method for separating fluid produced from a wellbore |
CN104697249A (zh) * | 2013-12-09 | 2015-06-10 | 马兴国 | 新型氟冷风机分布器 |
CN107945892B (zh) * | 2017-09-29 | 2024-06-25 | 中广核研究院有限公司 | 一体化气态氧控装置以及铅基快中子反应堆 |
CN109373657B (zh) * | 2018-11-19 | 2023-05-23 | 珠海格力节能环保制冷技术研究中心有限公司 | 空调系统及其控制方法 |
WO2021229649A1 (ja) * | 2020-05-11 | 2021-11-18 | 三菱電機株式会社 | アキュムレータおよび冷凍サイクル装置 |
KR102144916B1 (ko) * | 2020-05-19 | 2020-08-14 | 주식회사 케이. 씨. 이 | 메카니칼씰의 수냉식 냉각 시스템 |
DE102021102107A1 (de) * | 2021-01-29 | 2022-08-04 | Airbus Operations Gmbh | System zum Bereitstellen einer druckbeaufschlagten Flüssigkeit |
CN115218559A (zh) * | 2021-04-20 | 2022-10-21 | 开利公司 | 经济器及空气调节系统 |
CN117999480A (zh) * | 2021-09-30 | 2024-05-07 | 株式会社岛津制作所 | 气液分离器、总有机碳分析仪及分析系统 |
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- 2007-01-16 AU AU2007206437A patent/AU2007206437A1/en not_active Abandoned
- 2007-01-16 KR KR1020087019756A patent/KR20080089478A/ko not_active Application Discontinuation
- 2007-01-16 EP EP07706819A patent/EP1975526A1/en not_active Withdrawn
- 2007-01-16 WO PCT/JP2007/050492 patent/WO2007083624A1/ja active Application Filing
- 2007-01-16 US US12/087,873 patent/US20100154467A1/en not_active Abandoned
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2012012491A3 (en) * | 2010-07-23 | 2012-05-03 | Carrier Corporation | Ejector cycle refrigerant separator |
US9261298B2 (en) | 2010-07-23 | 2016-02-16 | Carrier Corporation | Ejector cycle refrigerant separator |
CN105928270A (zh) * | 2016-06-06 | 2016-09-07 | 大连冷冻机股份有限公司 | 汽液分离型分液器 |
Also Published As
Publication number | Publication date |
---|---|
WO2007083624A1 (ja) | 2007-07-26 |
KR20080089478A (ko) | 2008-10-06 |
US20100154467A1 (en) | 2010-06-24 |
AU2007206437A1 (en) | 2007-07-26 |
JP2007192433A (ja) | 2007-08-02 |
CN101371085A (zh) | 2009-02-18 |
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