WO2007083624A1 - 気液分離器及び該気液分離器を備えた冷凍装置 - Google Patents
気液分離器及び該気液分離器を備えた冷凍装置 Download PDFInfo
- Publication number
- WO2007083624A1 WO2007083624A1 PCT/JP2007/050492 JP2007050492W WO2007083624A1 WO 2007083624 A1 WO2007083624 A1 WO 2007083624A1 JP 2007050492 W JP2007050492 W JP 2007050492W WO 2007083624 A1 WO2007083624 A1 WO 2007083624A1
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- WIPO (PCT)
- Prior art keywords
- gas
- liquid
- container body
- liquid separator
- refrigerant
- Prior art date
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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
- the present invention relates to a gas-liquid separator that separates a gas-liquid two-phase fluid into a liquid fluid and a gas fluid, and a refrigeration apparatus that includes a refrigerant circuit having the gas-liquid separator.
- some refrigeration apparatuses include a refrigerant circuit that performs a two-stage compression and a two-stage expansion refrigeration cycle. And this refrigeration apparatus has what has a gas-liquid separator which isolate
- the refrigeration apparatus described in Patent Document 1 is an air conditioner including a refrigerant circuit that performs two-stage compression and two-stage expansion refrigeration cycles during heating operation.
- the refrigerant circuit is provided with a gas-liquid separator that separates the gas-liquid two-phase refrigerant into a gas refrigerant and a liquid refrigerant.
- Two-stage compression Two-stage expansion In the heating operation of the refrigeration cycle, the refrigerant discharged from the high-stage compressor is condensed by the indoor heat exchanger to heat the indoor air.
- the condensed refrigerant passes through the intermediate expansion valve to be in an intermediate-pressure gas-liquid two-phase state, is introduced into the gas-liquid separator, and is separated into a gas refrigerant and a liquid refrigerant.
- the liquid refrigerant flows out of the gas-liquid separator, is decompressed to a low pressure by the outdoor expansion valve, expands, and then evaporates in the outdoor heat exchanger.
- the evaporated refrigerant is sucked into the low-stage compressor and compressed to become an intermediate-pressure discharge refrigerant.
- the gas refrigerant of the gas-liquid separator joins the discharged refrigerant at the intermediate pressure and is sucked into the high stage compressor and compressed to a high pressure.
- the gas-liquid separator has a cylindrical container body (a) as shown in FIG.
- An inflow pipe (b), a liquid outflow pipe (c), and a gas outflow pipe (d) are connected through the top of the container body (a).
- the lower liquid refrigerant reservoir (and the upper gas refrigerant reservoir (f) are separated.
- the open end of the liquid outlet pipe (C) is the liquid refrigerant reservoir.
- the open end of the gas outflow pipe (d) is located in the gas refrigerant storage section (f), and the open end of the inflow pipe (b) is connected to the liquid outflow pipe (c). It is located between the open end and the open end of the gas outflow pipe (d).
- the gas-liquid separator is shown in FIG.
- the gas-liquid separator is a vertically long
- a gas outflow pipe (d) is connected through the top of the container body ( a ).
- An inflow pipe passes through and is connected to the upper part of the body of the container body ⁇ .
- a liquid outflow pipe penetrates and is connected to the lower part of the body portion of the container body ⁇ .
- Patent Document 1 Japanese Patent Laid-Open No. 2001-235245
- the container body (a) is vertically long, and the opening end of the inflow pipe (b) and the inner wall of the container body (a) facing each other are close to each other.
- the gas-liquid two-phase refrigerant force flowing in from the inflow pipe (b) shows the container body (a) as shown by the arrow in Fig. 9. It collides with the inner wall of and scatters.
- the scattered refrigerant flowed out directly from the gas outflow pipe (d).
- the scattered refrigerant falls into the liquid refrigerant reservoir (e), resulting in a problem that the liquid level is disturbed or bubbles are mixed.
- the present invention has been made in view of such a point, and improves the separation performance in a gas-liquid separator that separates a gas-liquid two-phase fluid into a gas fluid and a liquid fluid, and this gas-liquid Separation
- An object of the present invention is to stabilize the operation of a refrigeration apparatus equipped with a refrigerator.
- a first invention includes a container body (16) for separating a gas-liquid two-phase fluid into a liquid fluid and a gas fluid, and an inflow pipe for allowing the gas-liquid two-phase fluid to flow into the container body (16).
- (20) a liquid outflow pipe (30) for allowing the liquid fluid in the container body (16) to flow out by the container body (16), and the gas fluid in the container body (16) 16) Force
- the target is a gas-liquid separator equipped with a gas outlet pipe (40) for outlet.
- the inflow pipe (20) is provided with subdividing means (50) for subdividing the bubbles in the gas-liquid two-phase fluid.
- the subdividing means (50) is provided in the inflow pipe (20)
- the gas-liquid two-phase fluid flowing through the inflow pipe (20) becomes a slag flow. Even so, the gas-liquid two-phase fluid is made uniform by subdividing the bubbles made of the gas fluid. Therefore, the gas-liquid two-phase fluid is introduced into the container body (16) in a regular and stable flow state.
- the gas-liquid two-phase fluid is separated into the liquid fluid and the gas fluid, the liquid fluid reservoir (23) is formed in the lower part, and the gas fluid in the upper part.
- a reservoir (24) is formed. Since the gas-liquid two-phase fluid in a regular flow state is introduced into the container body (16), the liquid surface of the liquid fluid reservoir (23) is disturbed, the liquid fluid is scattered by the disturbance, and the liquid fluid Bubbles in the storage part (23) are reduced.
- the subdividing means (50) comprises a mesh member (50).
- the subdividing means (50) is constituted by the mesh member (50), the bubbles are surely subdivided and the gas-liquid two-phase fluid is divided by the subdividing means (50).
- the resistance received is relatively small.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are connected to the container body (16). It is arranged at the upper part and opposed to the opposite side of the container body (16), while the opening end (31) force of the liquid outflow pipe (30) is placed at the lower part of the container body (16). Arranged.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are disposed at the upper part of the container main body (16).
- the opposing forces on the opposite sides Are arranged as follows. Therefore, the open end (21) of the inflow pipe (20) is not immersed in the liquid fluid storage part (23) at the lower part of the container body (16).
- the gas-liquid two-phase fluid is directly introduced into the liquid fluid reservoir (23) and bubbles are mixed into the liquid fluid reservoir (23), or the liquid fluid reservoir (23) The liquid level is prevented from being disturbed.
- the inflow pipe (20) since the open end (21) of the inflow pipe (20) and the inner wall of the container body (16) facing the open end (21) are prevented from approaching, the inflow pipe (20 ), The gas-liquid two-phase fluid flowing in from the container) collides with the inner wall of the container body (16) and is scattered.
- the open end (41) of the gas outflow pipe (40) is disposed in the container body (16) at a predetermined distance from the open end (21) of the inflow pipe (20). From the above-mentioned inflow pipe (20) force, the open end (41) force of the gas-liquid two-phase fluid force gas outflow pipe (40) flowing into the container body (16) does not flow out directly. Further, the open end (31) of the liquid outflow pipe (30) is disposed in the liquid fluid storage section (23) in the lower part of the container body (16).
- a ninth invention includes a container body (16) for separating a gas-liquid two-phase fluid into a liquid fluid and a gas fluid, and an inflow pipe for allowing the gas-liquid two-phase fluid to flow into the container body (16).
- (20) a liquid outflow pipe (30) for allowing the liquid fluid in the container body (16) to flow out by the container body (16), and the gas fluid in the container body (16) 16) Force
- the target is a gas-liquid separator equipped with a gas outlet pipe (40) for outlet.
- the container body (16) is formed such that the length in the horizontal direction is longer than the length in the vertical direction.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are arranged at the upper part of the container body (16) and the container body (16). It is arranged so as to face opposite sides in the longitudinal direction. Furthermore, the open end (31) of the liquid outflow pipe (30) is disposed at the lower part of the container body (16).
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are arranged in the upper part of the container body (16).
- the container main body (16) is disposed so as to face opposite sides in the longitudinal direction. Therefore, the distance between the opening end (21) of the inflow pipe (20) and the inner wall of the container body (16) facing the opening end (21) becomes longer. This reliably prevents the gas-liquid two-phase fluid flowing from the inflow pipe (20) from colliding with the inner wall of the container body (16) and scattering. As a result, the liquid fluid in the lower part of the container body (16) is stored. The fluid level of the retainer (23) is prevented from being disturbed and air bubbles are mixed in, and the fluid scattered by the collision
- the bottom surface (16d) of the container body (16) corresponds to the open end (31) of the liquid outflow pipe (30). It is installed in such a way that it tilts downward with the direction of force.
- the container body (16) is formed of the container body (
- the lower surface (16d) of 16) is installed so as to incline downward by directing to a position corresponding to the open end (31) of the liquid outflow pipe (30).
- the lower surface (16d) of the container body (16) is the container body (
- the inflow pipe (20) is introduced into the container body (16) in the horizontal direction, while the open end (21) is inclined downward. It is open.
- An eleventh invention is the ninth invention, wherein the inflow pipe (20) is introduced into the container body (16) in the horizontal direction, while the open end (21) is directed obliquely downward. It is open.
- the open end (21) of the inflow pipe (20) is opened obliquely downward, so that the gas-liquid two-phase fluid is supplied to the container body (16). It will not collide with the inner wall and scatter.
- the liquid level in the liquid fluid reservoir (23) Bubbles are reduced.
- the inflow pipe (20) is installed so as to extend in the horizontal direction.
- the inflow pipe (20) extends in the horizontal direction. Is installed.
- the open end (41) of the gas outflow pipe (40) is disposed above the open end (21) of the inflow pipe (20).
- the open end (41) of the gas outflow pipe (40) is disposed above the open end (21) of the inflow pipe (20).
- the open end (41) of the gas outflow pipe (40) is disposed above the open end (21) of the inflow pipe (20).
- Inflow pipe (20) force The gas-liquid two-phase fluid that flows in does not fall and flow out directly from the open end (41) of the gas outflow pipe (40).
- An eighth invention is a refrigeration apparatus comprising a refrigerant circuit (10) having the gas-liquid separator (18) according to the first invention.
- the fourteenth invention is a refrigeration apparatus including a refrigerant circuit (10) having the gas-liquid separator (18) described in the ninth invention.
- the refrigerant circuit (10) includes the first expansion mechanism (17), the evaporator (13), the low-stage compressor (11), and the high-stage compressor (12). And a condenser (14) and a second expansion mechanism (15) are connected in order to perform a two-stage compression two-stage expansion refrigeration cycle. Then, after flowing through the condenser (14), the intermediate-pressure gas-liquid two-phase refrigerant depressurized by the second expansion mechanism (15) enters the container body (16) of the gas-liquid separator (18). The inflow pipe (20) of the gas-liquid separator (18) is connected to the downstream side of the second expansion mechanism (15) so as to flow in.
- liquid outflow pipe (30) of the gas-liquid separator (18) is connected to the first expansion mechanism (17) so that the liquid refrigerant separated by the gas-liquid separator (18) is supplied to the first expansion mechanism (17).
- the gas refrigerant separated by the gas-liquid separator (18) is supplied to the suction side of the high-stage compressor (12), and the gas outflow pipe (40) of the gas-liquid separator (18). Is connected to the suction side of the high-stage compressor (12).
- the refrigerant circuit (10) having the gas-liquid separator (18) according to the first or ninth invention performs a two-stage compression two-stage expansion refrigeration cycle.
- the second expander The gas-liquid two-phase refrigerant depressurized to an intermediate pressure by the structure (15) is reliably separated into a liquid refrigerant and a gas refrigerant by the gas-liquid separator (18).
- the liquid refrigerant is prevented from entering the gas refrigerant supplied to the suction side of the high-stage compressor (12), and supplied to the evaporator (13) via the first expansion mechanism (17).
- the gas refrigerant is prevented from being mixed into the liquid refrigerant. This stabilizes the evaporation capacity in the evaporator (13) and the condensation capacity in the condenser (14), thereby stabilizing the operation.
- the subdividing means (50) is provided in the inflow pipe (20)
- the gas-liquid two-phase fluid flowing through the inflow pipe (20) becomes a slag flow. Even so, the gas-liquid two-phase fluid can be made uniform by subdividing the large bubbles having gas fluid force. As a result, the gas-liquid two-phase fluid can be introduced into the container body (16) in a regular and stable flow state.
- the gas-liquid two-phase fluid is separated into the liquid fluid and the gas fluid, the liquid fluid reservoir (23) is formed in the lower part, and the gas fluid in the upper part is formed.
- a reservoir (24) is formed. Since the gas-liquid two-phase fluid is introduced into the container body (16) in a regular flow state, the liquid surface of the liquid fluid reservoir (23) is disturbed, the liquid fluid is scattered by the disturbance, and the liquid fluid It is possible to reduce the mixing of bubbles in the reservoir (23).
- the subdividing means (50) is constituted by the mesh member (50), it is possible to reliably subdivide the bubbles, and to achieve a gas-liquid two-phase fluid.
- the resistance received by the subdivision means (50) can be made relatively small. As a result, the gas-liquid two-phase fluid flowing into the container body (16) becomes a more regular and stable flow state.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are connected to the upper part of the container body (16).
- the container body (16) is arranged so that the opposite forces of the container body (16) face each other, so that the container can be opened from the open end (21) of the inflow pipe (20). It is possible to prevent the gas-liquid two-phase fluid from being directly introduced into the liquid fluid reservoir (23) at the lower part of the main body (16). Furthermore, it is possible to prevent the gas-liquid two-phase fluid flowing into the opening end (21) of the inlet pipe (20) from colliding with the inner wall of the container body (16) and scattering. As a result, it is possible to reliably prevent bubbles from being mixed into the liquid fluid reservoir (23) and the liquid surface of the liquid fluid reservoir (23) from being disturbed.
- the open end (41) of the gas outflow pipe (40) can be arranged in the container body (16) with a predetermined distance from the open end (21) of the inflow pipe (20). Therefore, it is possible to prevent direct outflow from the open end (41) of the gas-liquid two-phase fluid force gas outflow pipe (40) flowing into the container body (16) from the inflow pipe (20). In this way, it is possible to reliably prevent the gas fluid from being mixed into the liquid fluid flowing from the liquid fluid reservoir (23) to the liquid outflow pipe (30), and the gas fluid reservoir (24). The force can also reliably prevent liquid fluid from mixing into the gas fluid flowing to the gas outflow pipe.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are connected to the upper part of the container body (16).
- the container main body (16) is disposed so as to face the opposite sides in the longitudinal direction, so that the open end (21) of the inflow pipe (20) and the open end (21) face each other.
- the distance to the inner wall of (16) can be increased. Therefore, the gas-liquid two-phase fluid flowing from the inflow pipe (20) can be surely prevented from colliding with the inner wall of the container body (16) and being scattered. It is possible to prevent the liquid level in the lower liquid fluid storage part (23) from being disturbed and air bubbles from being mixed. Furthermore, it is possible to prevent the fluid scattered by the collision from flowing out the gas outflow pipe (40) force.
- the open end (41) of the gas outflow pipe (40) can be disposed with a certain distance from the open end (21) of the inflow pipe (20). Therefore, the gas-liquid two-phase fluid flowing from the inflow pipe (20) into the container body (16) can be prevented from directly flowing out from the open end (41) of the gas outflow pipe (40). In this way, it is possible to reliably prevent the gas fluid from being mixed into the liquid fluid flowing from the liquid fluid reservoir (23) to the liquid outflow pipe (30). Furthermore, liquid fluid can be reliably prevented from entering the gas fluid flowing from the gas fluid reservoir (24) to the gas outflow pipe. As a result, gas-liquid separation performance can be improved.
- the lower surface (16d) of the container body (16) is inclined to a position corresponding to the open end (31) of the liquid outflow pipe (30). Even if the liquid fluid in the container body (16) is small, the liquid fluid can be reliably stored around the open end (31) of the liquid outflow pipe (30). As a result, the liquid fluid can be surely flowed out with the force of the liquid outflow pipe (30), and the gas fluid can be prevented from being mixed when the liquid fluid is flowed out.
- the inlet pipe (20) is introduced into the container body (16) in the horizontal direction, and the open end (21) is directed obliquely downward. Due to the opening, the gas-liquid two-phase fluid can be prevented from colliding with the inner wall of the container body (21) and scattering. Further, since the gas-liquid two-phase fluid can be dropped more slowly than falling perpendicular to the liquid fluid level of the container body (16), the liquid level of the liquid fluid reservoir (23) can be reduced. Disturbances and air bubbles can be reduced.
- the inflow pipe (20) is installed so as to extend in the horizontal direction, even when the gas-liquid two-phase fluid becomes a slag flow, A large lump of bubbles composed of the gas fluid of the slag flow is easily broken. As a result, the generation of slag flow can be suppressed.
- the open end (41) of the gas outflow pipe (40) is disposed above the open end (21) of the inflow pipe (20).
- the open end (41) of the gas outflow pipe (40) is disposed above the open end (21) of the inflow pipe (20).
- the refrigerant circuit (10) having the gas-liquid separator (18) according to the first or ninth invention is compressed in two stages.
- the gas-liquid two-phase refrigerant depressurized to an intermediate pressure by the second expansion mechanism (15) is surely converted into a liquid refrigerant and a gas refrigerant by the gas-liquid separator (18).
- liquid refrigerant can be prevented from entering the gas refrigerant supplied to the suction side of the high-stage compressor (12), and the evaporator (13) can be connected via the first expansion mechanism (17). It is possible to prevent the gas refrigerant from being mixed into the liquid refrigerant supplied to. This stabilizes the evaporation capacity in the evaporator (13) and stabilizes the condensation capacity in the condenser (14).
- the power that can be achieved can improve the reliability of the apparatus.
- FIG. 1 is a piping system diagram of a refrigerant circuit of a refrigeration apparatus according to Embodiment 1.
- FIG. 2 is a longitudinal sectional view of the gas-liquid separator according to the first embodiment.
- FIG. 3 is a longitudinal sectional view of a gas-liquid separator according to Modification 1 of Embodiment 1.
- FIG. 4 is a longitudinal sectional view of a gas-liquid separator according to Modification 2 of Embodiment 1.
- FIG. 5 is a longitudinal sectional view of a gas-liquid separator according to Embodiment 2.
- FIG. 6 is a longitudinal sectional view of a gas-liquid separator according to Modification 1 of Embodiment 2.
- FIG. 7 is a longitudinal sectional view of a gas-liquid separator according to Modification 2 of Embodiment 2.
- FIG. 8 is a longitudinal sectional view of a conventional gas-liquid separator.
- FIG. 9 is a longitudinal sectional view of a conventional gas-liquid separator.
- the refrigeration apparatus (1) of the present embodiment performs a freezing operation in the warehouse.
- the refrigeration apparatus (1) includes a refrigerant circuit (10) that performs a two-stage compression and a two-stage expansion refrigeration cycle.
- the refrigerant circuit (10) consists of a low-stage compressor (11) and a high-stage compressor (12) and a refrigeration heat exchanger (
- the discharge side of the low-stage compressor (11) is connected to the suction side of the high-stage compressor (12).
- the low-stage compressor (11) and the high-stage compressor (12) are composed of, for example, a scroll compressor.
- the refrigeration heat exchanger (13) is installed in a warehouse, and is configured as an evaporator that cools the interior by evaporating the refrigerant.
- the refrigeration heat exchanger (13) has an outlet side connected to the suction side of the low-stage compressor (11).
- the refrigeration heat exchanger (13) is composed of, for example, a fin “and” tube heat exchanger.
- the inlet side of the refrigeration heat exchanger (13) is connected to the outlet side of the main expansion valve (17).
- the main expansion valve (17) is an electronic expansion valve whose opening degree can be adjusted, and is configured as a first expansion mechanism.
- the outdoor heat exchanger (14) is configured as a condenser that is installed outdoors and condenses the refrigerant.
- the outdoor heat exchanger (14) is connected to the discharge side of the high stage compressor (12) at the inlet side. Further, the outdoor heat exchange (14) is also configured, for example, as a fin 'and' tube heat exchange force.
- the outlet side of the outdoor heat exchanger (14) is connected to the inlet side of the intermediate expansion valve (15).
- the intermediate expansion valve (15) is an electronic expansion valve whose opening can be adjusted, and is configured as a second expansion mechanism.
- the gas-liquid separator (18) includes a container body (16), an inflow pipe (20), a liquid outflow pipe (30), and a gas outflow. With a tube (40).
- the container body (16) is connected to the outlet side downstream of the intermediate expansion valve (15) via the inflow pipe (20) and upstream of the main expansion valve (17) via the liquid outflow pipe (30). Is connected to the suction side of the high-stage compressor (12) through the gas outflow pipe (40).
- the outlet side of the intermediate expansion valve (15) is connected to the inlet side upstream of the main expansion valve (17) via the gas-liquid separator (18) and the high-stage compressor ( It is connected to the suction side of 12).
- the container body (16) of the gas-liquid separator (18) is formed in a substantially cylindrical shape that is long in the axial direction, and is arranged so that the axial direction is the vertical direction.
- the container main body (16) includes a first through hole (16a), a second through hole (16b), and a third through hole (16c) in a body portion that is a side surface of a cylinder.
- the first through hole (16a) is provided in an upper portion of the body portion of the container body (16), and the second through hole (16b) is formed in the first through hole (in the body portion of the container body (16)).
- 16a) is provided at a position higher than the first through hole (16a), and the third through hole (16c) is provided at the lower part of the body of the container body (16).
- a liquid refrigerant reservoir (23) is formed in the lower part, while a gas refrigerant reservoir (24) is formed in the upper part.
- the inflow pipe (20) is arranged so as to extend in the horizontal direction throughout.
- the inflow pipe (20) is introduced into the container body (16) through the first through hole (16a) of the container body (16), and is connected to the body portion of the container body (16).
- the open end (21) of the inflow pipe (20) is located closer to the body side having the first through hole (16a) than the horizontal center of the container body (16) in the container body (16). Has been placed.
- the opening end (21) of the inflow pipe (20) opens obliquely downward at an angle of about 45 ° with respect to the vertical direction.
- the inflow pipe (20) is provided with a mesh member (50) which is a feature of the present invention.
- the penetration part of the first through hole (16a) of the container body (16) is brazed to the container body (16), and the mesh member (16 50) is arranged.
- the mesh member (50) is formed in a hollow cone shape, and the bottom surface of the cone opens.
- the side surface of the cone is made of a net material knitted from a metal wire.
- the mesh member (50) is arranged such that the apex of the cone is on the open end (21) side. That is, in the inflow pipe (20), the refrigerant that has flowed through the intermediate expansion valve (15) flows toward the apex of the cone through the bottom opening of the mesh member (50), and at that time, passes through the side net material. It is configured to
- the gas outflow pipe (40) passes through the second through hole (16b) of the container body (16) and is introduced into the container body (16), and is inserted into the body portion of the container body (16). In contrast, it is provided substantially vertically. Further, the open end (41) of the gas outflow pipe (40) is located on the side of the body having the second through hole (16b) from the horizontal center of the container body (16) in the container body (16). Arranged.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are the gas refrigerant reservoir that is the upper part of the container body (16). (24) and so as to face opposite sides of the container body (16).
- the open end (41) of the gas outflow pipe (40) is arranged above the open end (21) of the inflow pipe (20).
- the liquid outflow pipe (30) passes through the third through hole (16c) of the container main body (16) and is provided substantially perpendicular to the trunk of the container main body (16).
- the open end (31) of the liquid outflow pipe (30) is disposed in the liquid refrigerant storage section (23) below the container body (16).
- High-pressure side compressor (12) The high-pressure refrigerant that has also discharged force flows through the outdoor heat exchange (14), dissipates heat to the outdoor air, and condenses.
- the condensed refrigerant flows through the intermediate expansion valve (15) and is reduced to an intermediate pressure, and becomes a gas-liquid two-phase refrigerant.
- the gas-liquid two-phase refrigerant flows through the inlet pipe (20) of the gas-liquid separator (18) and passes through the mesh member (50). At this time, the bubbles in the gas-liquid two-phase refrigerant are subdivided. That is, as shown in FIG. 2, the gas-liquid two-phase refrigerant in the inflow pipe (20) becomes a slag flow, and the bubbles (80) that have a large mass force of the gas refrigerant flow. Even in this case, bubbles (80) It passes through the mesh member (50) and is subdivided into fine bubbles (81). As a result, the gas-liquid two-phase refrigerant is in a uniform state in which minute bubbles (81) are dispersed in the liquid refrigerant.
- the mesh member (50) Since the mesh member (50) is provided in the vicinity of the open end (21), the gas-liquid two-phase refrigerant is maintained in a uniform state in the container body (16). It is introduced inside. In particular, the gas-liquid two-phase refrigerant is gradually dropped from the opening end (21) opened downward by 45 ° in the vertical direction toward the liquid refrigerant storage part (23). It is introduced inside the container body (16).
- the liquid refrigerant reservoir (23) generates bubbles and bubbles are generated. It is reduced that the liquid surface of the reservoir (23) is disturbed and the liquid refrigerant is scattered.
- the gas-liquid two-phase refrigerant introduced into the container body (16) is separated into a liquid refrigerant and a gas refrigerant, and the gas refrigerant is stored in the gas refrigerant reservoir (24) at the upper part of the container body (16).
- the liquid refrigerant is stored and stored in the liquid refrigerant storage section (23) below the container body (16).
- the liquid refrigerant in the container body (16) flows through the liquid outflow pipe (30), passes through the main expansion valve (17), is decompressed to a low pressure, and expands.
- the expanded refrigerant flows through the freezing heat exchanger (13), the refrigerant absorbs heat from the internal air and evaporates to cool the internal air.
- the evaporated refrigerant is sucked into the low-stage compressor (11), compressed to an intermediate pressure, and discharged. And the gas refrigerant in the container main body (16) of the gas-liquid separator (18) is supplied to the intermediate-pressure discharge refrigerant through the gas outlet pipe (40), and is supplied to the high-stage compressor (11). Inhaled.
- the mesh member (50) is provided in the inflow pipe (20) of the gas-liquid separator (18), the gas refrigerant in the gas-liquid two-phase refrigerant flowing through the inflow pipe (20). Therefore, the gas-liquid two-phase refrigerant can be made uniform. As a result, the gas-liquid two-phase refrigerant is introduced into the container body (16) in a regular and stable flow state, so that the liquid surface of the liquid refrigerant reservoir (23) is disturbed, and the liquid refrigerant caused by the disturbance is disturbed. Spattering and mixing of bubbles due to bubbling of the liquid refrigerant reservoir (23) can be reduced.
- the inflow pipe (20) is installed so as to extend in the horizontal direction over the whole! Therefore, a large lump of bubbles made of gas refrigerant in the gas-liquid two-phase fluid is easily broken. And Generation of large bubbles (80) before passing through the mesh member (50) can be suppressed.
- the open end (21) of the inflow pipe (20) and the open end (41) of the gas outflow pipe (40) are connected to the container main body (16). It is arranged in the gas refrigerant reservoir (24), which is the upper part, and is arranged so as to face the opposite sides of the container body (16).
- the gas refrigerant reservoir (24) which is the upper part, and is arranged so as to face the opposite sides of the container body (16).
- the open end (21) of the inflow pipe (20) is bent at about 45 ° and opens obliquely downward, so that the gas-liquid two-phase refrigerant is transferred to the container body (16). It is possible to more reliably prevent a collision with the body of the body. Further, since the gas-liquid two-phase refrigerant falls more slowly than falling perpendicular to the liquid level of the liquid refrigerant reservoir (23) in the container body (16), the liquid refrigerant reservoir (23) Disturbance of liquid level and foaming can be reduced.
- the open end (41) of the gas outflow pipe (40) is disposed on the container body (16) on the side facing the open end (21) of the inflow pipe (20), and further, It is arranged above the open end (21) of the inflow pipe (20). Therefore, it is possible to prevent the gas-liquid two-phase refrigerant flowing into the container body (16) from the inflow pipe (20) from directly flowing out through the gas outflow pipe (40).
- the liquid outflow pipe (30) is also capable of receiving liquid. It is possible to prevent gas refrigerant from entering when the refrigerant flows out.
- the gas-liquid separation of the gas-liquid separator (18) of the refrigerant circuit (10) is performed. Since the performance is improved, the evaporation capacity in the refrigeration heat exchanger (13) and the condensation capacity in the outdoor heat exchanger (14) are stabilized, so that the operation can be stabilized. As a result, the reliability of the refrigeration apparatus (1) can be improved.
- the inflow pipe (20) of the gas-liquid separator (1) of the first embodiment instead of configuring the inflow pipe (20) of the gas-liquid separator (1) of the first embodiment from a single pipe, as shown in FIG. It consists of a main piping section (20a), a mesh piping section (20b), and a brazed piping section (20c).
- the brazed pipe part (20c) is brazed to the first through hole (16a) of the casing (10).
- the mesh pipe part (20b) has a pipe diameter larger than the pipe diameters of the brazed pipe part (20c) and the main pipe (20a), and has a conical shape as in the first embodiment.
- a member (50) is arranged.
- the said main piping part (20a) is connected with the said brazing piping part (20c) via the mesh piping part (2 Ob).
- main pipe part (20a), the mesh pipe part (20b), and the brazed pipe part (20c) are connected in order.
- the mesh pipe (50) can be easily maintained and replaced by configuring the inflow pipe (20) with three piping portions (20a, 20b, 20c). Further, in the mesh piping section (20b), when the gas-liquid two-phase refrigerant flows, the mesh member (50) becomes a resistance, but the resistance can be reduced by forming it to have a slightly larger diameter.
- the lower surface (16d ) Is inclined downward toward a position corresponding to the open end (31) of the liquid outflow pipe (30).
- the container body (16) since the lower surface (16d) of the container body (16) is inclined downward toward the position corresponding to the open end (31) of the liquid outflow pipe (30), the container body Even if the amount of liquid refrigerant in (16) is small, the liquid refrigerant can be reliably stored around the open end (31) of the liquid outflow pipe (30). As a result, the liquid refrigerant can be surely flowed out with the force of the liquid outflow pipe (30). Further, the open end (31) of the liquid outflow pipe (30) may be exposed to the gas refrigerant reservoir (24). Therefore, the liquid outflow pipe (30) can prevent the gas refrigerant from flowing out.
- This embodiment is a refrigeration apparatus that includes a refrigerant circuit that performs a two-stage compression and two-stage expansion refrigeration cycle as in the first embodiment, and that performs a refrigeration operation in the refrigerator. Only the configuration of the liquid separator (18) is different.
- the gas-liquid separator (18) of the present embodiment is formed such that the longitudinal length in the horizontal direction of the container body (16) is longer than the length in the vertical direction.
- the inflow pipe (20) of the gas-liquid separator (18) may be provided with a mesh member (50) as a subdividing means.
- the container body (16) of the gas-liquid separator (18) is the same as the cylindrical container body (16) of Embodiment 1 so that the axial direction of the cylinder is horizontal. Installed horizontally! . As a result, the container body (16) is formed such that the length in the horizontal direction is longer than the length in the vertical direction.
- one of the two bottom surfaces of the cylinder of the container body (16) has a first through hole in the upper part.
- the third through hole (16c) is formed in the lower part of the force.
- the inflow pipe (20) and the liquid outflow pipe (30) are formed so that the first through hole (16a) and the third through hole (16c) are substantially perpendicular to the bottom surface of the container body (16), respectively. Is connected to the container body (16).
- a second through hole (16b) is formed at the upper portion of the position corresponding to the first through hole (16a).
- the gas outflow pipe (40) is connected through (16b).
- the open end (21) of the inflow pipe (20) and the open end (31) of the liquid outflow pipe (30) are connected to the first through hole (16a) from the horizontal center of the container body (16). It is arranged on the bottom side having the third through hole (16b).
- the open end (41) of the gas outflow pipe (40) is disposed on the bottom side having the second through hole (16b) from the horizontal center of the container body (16).
- the open end (21) of the liquid outflow pipe (20) and the open end (41) of the gas outflow pipe (40) form a gas refrigerant reservoir ( 24) and so as to face opposite sides of the container body (16) in the longitudinal direction. Gas spill The open end (41) of the pipe (40) is disposed above the open end (21) of the inflow pipe (20). On the other hand, the open end (31) of the liquid outflow pipe (30) is disposed in the liquid refrigerant reservoir (24) below the container body (16).
- the container body (16) having the same shape as that of the first embodiment is used.
- the horizontal direction of the container body (16) is set to be the longitudinal direction, the following Has an effect.
- the distance from the inner wall of (16) (the bottom surface having the second through hole (16b)) can be increased. Therefore, even if the gas-liquid two-phase refrigerant flowing in the inflow pipe (20) becomes a slag flow and the flow velocity temporarily increases, the gas-liquid two-phase refrigerant flowing in from the inflow pipe (20) It is possible to prevent the refrigerant from colliding with the inner wall of the container body (16).
- the inflow pipe (20) Force The gas-liquid two-phase refrigerant that flows in can be surely prevented from directly flowing out of the gas outflow pipe (40) force.
- the gas-liquid separator (18) it is possible to prevent the liquid refrigerant from being mixed into the gas refrigerant flowing out of the gas outflow pipe (40), and the liquid outflow pipe (30 The gas refrigerant can be mixed into the liquid refrigerant flowing out from). As a result, the gas-liquid separation performance of the gas-liquid separator (18) can be improved.
- the longitudinal direction of the container body (16) is set to the horizontal direction, so that the gas-liquid two-phase refrigerant that has also flowed in the inflow pipe (20) collides with the inner wall of the container body (16). Is prevented.
- the gas-liquid two-phase refrigerant flowing from the inflow pipe (20) is opened so that the opening end (21) of the inflow pipe (20) opens obliquely downward. Let's more surely prevent collision with the inner wall of the container body (16).
- Other configurations, operations, and effects are the same as those in the first embodiment.
- a mesh member (50) is provided in the inflow pipe (20) of the gas-liquid separator (18) of the second embodiment.
- the gas-liquid two-phase refrigerant introduced into the inflow pipe (20) force vessel body (50) is made uniform, and the gas-liquid two-phase refrigerant is made uniform.
- the flow state of the phase refrigerant becomes regular and stable.
- the liquid level of the liquid refrigerant reservoir (23) is disturbed, the liquid refrigerant is scattered to the gas refrigerant reservoir (24) due to the disturbance of the liquid level, and the liquid refrigerant reservoir (23) is bubbled. It is possible to prevent air bubbles from being mixed. Thereby, the gas-liquid separation performance of the gas-liquid separator (18) is further improved.
- the liquid main pipe (16) of the gas-liquid separator (18) of the second embodiment is passed through the liquid outflow pipe (30) from the bottom surface through which the gas outflow pipe (40) passes. It is installed by tilting downward by directing in the direction of the bottom surface through which it penetrates.
- the lower part (16d) of the cylindrical side surface of the container body (16) is inclined downward toward the position corresponding to the open end (31) of the liquid outflow pipe (30), and the side surface
- the lower part (16d) is formed on the lower surface of the container body (16).
- only the container main body (16) is inclined and the pipes (20, 30, 40) are horizontally arranged on the container main body (16).
- the liquid refrigerant in the container body (16) is small, the liquid refrigerant can be reliably stored around the open end (31) of the liquid outflow pipe (30).
- the liquid refrigerant can surely flow out from the liquid outflow pipe (30).
- the open end (31) of the liquid outflow pipe (30) can be prevented from being exposed to the gas refrigerant storage section (24), the liquid outflow pipe (30) can prevent the gas refrigerant from flowing out. Can be prevented.
- each pipe (20, 30, 40) is introduced so as to be substantially perpendicular to the bottom surface of the container body (16) and arranged so as to be inclined in the same direction as the container body (16).
- the refrigeration apparatus (1) of each of the above embodiments is a refrigeration apparatus that performs a freezing operation in a warehouse, but includes a refrigerant circuit that includes a gas-liquid separator and performs a two-stage compression and a two-stage expansion refrigeration cycle. Any other refrigeration device may be used. That is, the refrigeration apparatus (1) may be, for example, a refrigeration apparatus that performs indoor cooling operation or heating operation, a refrigeration apparatus that can be switched between cooling and heating operations, and single-stage compression and single-stage expansion operation. It may be a refrigeration apparatus capable of switching the compression two-stage expansion operation. Also, the configuration of the compressor (11, 12) and the heat exchanger m ⁇ (13, 14) of the refrigerant circuit is not particularly limited.
- the shape and the like of the mesh member (50) are not particularly limited.
- the mesh member (50) may be arranged in the inflow pipe (20) by stacking one or more plate-like mesh members.
- the container body (16) of the gas-liquid separator (18) has a cylindrical shape, but the shape of the container body (16) is not particularly limited, and may be, for example, a rectangular parallelepiped. There may be.
- the present invention is useful for a gas-liquid separator and a refrigeration apparatus including a refrigerant circuit having the gas-liquid separator.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007206437A AU2007206437A1 (en) | 2006-01-17 | 2007-01-16 | Gas-liquid separator and refrigeration system with gas-liquid separator |
US12/087,873 US20100154467A1 (en) | 2006-01-17 | 2007-01-16 | Gas-Liquid Separator and Refrigeration System With Gas-Liquid Seperator |
EP07706819A EP1975526A1 (en) | 2006-01-17 | 2007-01-16 | Gas-liquid separator and refrigeration device with the gas-liquid separator |
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 |
JP2006-008897 | 2006-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007083624A1 true WO2007083624A1 (ja) | 2007-07-26 |
Family
ID=38287577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
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 (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2205910A1 (en) * | 2007-11-05 | 2010-07-14 | Alfa Laval Corporate AB | Liquid separator for an evaporator system |
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CN103003640B (zh) * | 2010-07-23 | 2016-02-24 | 开利公司 | 喷射器循环制冷剂分离器 |
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 |
CN105928270B (zh) * | 2016-06-06 | 2018-12-28 | 大连冷冻机股份有限公司 | 汽液分离型分液器 |
CN107945892A (zh) * | 2017-09-29 | 2018-04-20 | 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 |
JP7361907B2 (ja) * | 2020-05-11 | 2023-10-16 | 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 |
WO2023053513A1 (ja) * | 2021-09-30 | 2023-04-06 | 株式会社島津製作所 | 気液分離器、全有機体炭素計および分析システム |
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- 2007-01-16 KR KR1020087019756A patent/KR20080089478A/ko not_active Application Discontinuation
- 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
- 2007-01-16 CN CNA2007800021792A patent/CN101371085A/zh active Pending
- 2007-01-16 AU AU2007206437A patent/AU2007206437A1/en not_active Abandoned
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EP2205910A4 (en) * | 2007-11-05 | 2013-03-20 | Alfa Laval Corp Ab | LIQUID SEPARATOR FOR AN EVAPORATOR SYSTEM |
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Also Published As
Publication number | Publication date |
---|---|
AU2007206437A1 (en) | 2007-07-26 |
JP2007192433A (ja) | 2007-08-02 |
EP1975526A1 (en) | 2008-10-01 |
CN101371085A (zh) | 2009-02-18 |
US20100154467A1 (en) | 2010-06-24 |
KR20080089478A (ko) | 2008-10-06 |
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