EP4379291A1 - Refrigerant storage container, and refrigeration cycle device provided with said refrigerant storage container - Google Patents
Refrigerant storage container, and refrigeration cycle device provided with said refrigerant storage container Download PDFInfo
- Publication number
- EP4379291A1 EP4379291A1 EP21951826.3A EP21951826A EP4379291A1 EP 4379291 A1 EP4379291 A1 EP 4379291A1 EP 21951826 A EP21951826 A EP 21951826A EP 4379291 A1 EP4379291 A1 EP 4379291A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container body
- refrigerant
- region
- container
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 242
- 238000005057 refrigeration Methods 0.000 title claims description 30
- 238000005192 partition Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 description 126
- 238000010586 diagram Methods 0.000 description 16
- 239000012071 phase Substances 0.000 description 11
- 239000000470 constituent Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- ZJJXGWJIGJFDTL-UHFFFAOYSA-N glipizide Chemical compound C1=NC(C)=CN=C1C(=O)NCCC1=CC=C(S(=O)(=O)NC(=O)NC2CCCCC2)C=C1 ZJJXGWJIGJFDTL-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
Definitions
- the present disclosure relates to a refrigerant reservoir container reserving refrigerant therein, and also relates to a refrigeration cycle device including the refrigerant reservoir container.
- a configuration of a refrigeration cycle device in which a refrigerant reservoir container is provided upstream of a suction port through which a compressor suctions refrigerant.
- the refrigerant reservoir container is configured to separate two-phase gas-liquid refrigerant into gas refrigerant and liquid refrigerant and reserve the liquid refrigerant in the container.
- Patent Literature 1 discloses a gas-liquid separator located in a refrigeration cycle to separate refrigerant into liquid refrigerant and gas refrigerant.
- the gas-liquid separator has a function of the refrigerant reservoir container, and includes a gas-phase refrigerant outflow pipe provided in an upper portion of the container to allow the gas refrigerant to flow out from the gas-liquid separator, a liquid-phase refrigerant outflow pipe provided in a lower portion of the container to allow the liquid refrigerant to flow out from the gas-liquid separator, a first plate configured to partition a refrigerant inflow chamber from a liquid-phase refrigerant accumulation chamber, and a second plate configured to partition the refrigerant inflow chamber from a gas-phase refrigerant collection chamber.
- Patent Literature 1 Japanese Unexamined Patent Application Publication No. 2015-172469
- the plates are used to simply partition a region into which refrigerant flows, a region in which liquid refrigerant is reserved, and a region in which gas refrigerant is reserved, from each other.
- This cannot always suppress roll-up of the accumulating liquid refrigerant, or restrain scattering liquid droplets from entering the refrigerant outflow pipe.
- the reserved liquid refrigerant may ripple and scatter, and the scattering liquid droplets may reach the refrigerant outflow pipe and flow into the compressor along with gas refrigerant.
- the present disclosure has been made in view of the above problems, and it is an object of the present disclosure to provide a refrigerant reservoir container that restrains liquid refrigerant from flowing out along with gas refrigerant from the refrigerant reservoir container, and a refrigeration cycle device including the refrigerant reservoir container.
- a refrigerant reservoir container includes: a container body reserving refrigerant; an inflow pipe inserted into an upper space of the container body, the inflow pipe having an inlet through which the refrigerant flows into the container body; and an outflow pipe inserted into the upper space of the container body, the outflow pipe having an outlet through which the refrigerant flows out from the container body, wherein a cross-sectional area of an inner space of the container body where the outlet of the outflow pipe is located is larger towards a bottom of the container body and away from the outlet.
- a refrigeration cycle device includes: the refrigerant reservoir container described above; and a compressor connected to the refrigerant reservoir container through the outflow pipe.
- the cross-sectional area of the inner space where the outlet of the outflow pipe is located increases towards the bottom of the container body.
- the outflow pipe is inserted into the upper space of the container body, and thus the cross-sectional area of the inner space near the outlet is smaller than the cross-sectional area of the inner space near the bottom of the container body.
- a refrigerant reservoir container according to the present embodiment and a refrigeration cycle device including the refrigerant reservoir container will be described with reference to the drawings.
- the present disclosure is not limited to the embodiments described below, and can be variously modified without departing from the gist of the present disclosure.
- the present disclosure includes all combinations of configurations that can be combined among the configurations shown in the embodiments described below.
- the configurations of the refrigerant reservoir container and the refrigeration cycle device are illustrated in the drawings merely as examples.
- the refrigerant reservoir container and the refrigeration cycle device illustrated in the drawings are not intended to limit the configurations of the present disclosure.
- the same reference signs denote the same or equivalent components, which are common throughout the entire specification. Note that the relative relationship of sizes of the constituent components, the shapes of the constituent components, and the like in the drawings may differ from those of actual ones.
- the X-direction shows a left-right direction of the refrigerant reservoir container, and is illustrated with the arrow pointing to the leftward direction from the rightward side.
- the Y-direction shows a front-rear direction of the refrigerant reservoir container, and is illustrated with the arrow pointing to the rearward direction from the forward side.
- the Z-direction shows an up-down direction of the refrigerant reservoir container, and is illustrated with the arrow pointing to the upward direction from the downward side.
- Fig. 1 is a refrigerant circuit diagram of the refrigeration cycle device 100 including the refrigerant reservoir container 101 according to Embodiment 1.
- the refrigeration cycle device 100 according to Embodiment 1 includes a compressor 10, a flow switching device 11, an outdoor heat exchanger 12, an expansion mechanism 13, an indoor heat exchanger 14, and the refrigerant reservoir container 101.
- the compressor 10, the flow switching device 11, the outdoor heat exchanger 12, the expansion mechanism 13, the indoor heat exchanger 14, and the refrigerant reservoir container 101 are connected by a refrigerant pipe 15. With this connection, a refrigerant circuit 200 is formed in which refrigerant circulates through the refrigerant pipe 15.
- the refrigerant reservoir container 101 is connected to the compressor 10 through an outflow pipe 3 that is a portion of the refrigerant pipe 15.
- the compressor 10 suctions refrigerant, compresses the suctioned refrigerant into a high-temperature high-pressure state, and discharges the compressed refrigerant.
- the compressor 10 is, for example, an inverter compressor. Refrigerant discharged from the compressor 10 flows into the outdoor heat exchanger 12 or the indoor heat exchanger 14 via the flow switching device 11.
- the flow switching device 11 has a function of switching between refrigerant flow passages.
- the flow switching device 11 switches operation between cooling and heating.
- refrigerant discharged from the compressor 10 flows through the outdoor heat exchanger 12, the expansion mechanism 13, the indoor heat exchanger 14, and the refrigerant reservoir container 101 in this order, and flows back to the compressor 10.
- refrigerant discharged from the compressor 10 flows through the indoor heat exchanger 14, the expansion mechanism 13, the outdoor heat exchanger 12, and the refrigerant reservoir container 101 in this order, and flows back to the compressor 10. That is, during the cooling operation in a room, the outdoor heat exchanger 12 serves as a condenser, while the indoor heat exchanger 14 serves as an evaporator.
- the indoor heat exchanger 14 serves as a condenser, while the outdoor heat exchanger 12 serves as an evaporator.
- the flow switching device 11 is, for example, a four-way valve.
- the flow switching device 11 may be made up of a combination of two-way valves or three-way valves.
- the expansion mechanism 13 is a pressure-reducing device configured to reduce the pressure of refrigerant flowing in the refrigerant circuit 200 to expand the refrigerant.
- the expansion mechanism 13 is constituted by, for example, an electronic expansion valve whose opening degree is variably controlled.
- the refrigeration cycle device 100 it is optimal that superheated gas is suctioned into the compressor 10 as refrigerant.
- the state of refrigerant to be suctioned into the compressor 10 depends on a refrigerant distribution in the refrigerant circuit 200.
- refrigerant containing liquid refrigerant may sometimes be suctioned into the compressor 10.
- refrigerating machine oil in a shell of the compressor 10 is diluted with the liquid refrigerant. This may cause seizure of sliding parts of the compressor 10.
- the refrigerant reservoir container 101 is installed upstream of the compressor 10 in the refrigerant flow direction.
- the two-phase gas-liquid refrigerant flowing into the refrigerant reservoir container 101 is separated into gas refrigerant and liquid refrigerant.
- the liquid refrigerant accumulates in the refrigerant reservoir container 101.
- the gas refrigerant passes through the outflow pipe 3, flows out from the refrigerant reservoir container 101, and is suctioned into the compressor 10.
- liquid refrigerant is separated from the two-phase gas-liquid refrigerant and reserved in the refrigerant reservoir container 101, so that the liquid refrigerant can be restrained from being suctioned into the compressor 10.
- the refrigeration cycle device 100 is not limited to being an air-conditioning apparatus capable of switching operation between cooling and heating as described above.
- the refrigerant reservoir container 101 may be applied to a refrigeration cycle device such as a dehumidifier or a refrigerator-freezer.
- Fig. 2 is a front view of the refrigerant reservoir container 101 according to Embodiment 1.
- the arrows in Fig. 2 conceptually illustrate a refrigerant flow.
- Fig. 3 is a plan view of the refrigerant reservoir container 101 according to Embodiment 1.
- the refrigerant reservoir container 101 includes a container body 1, the inflow pipe 2, and the outflow pipe 3.
- the container body 1 has a substantially truncated conical shape with its inner space having a cross-sectional area that gradually increases from the upper end towards the bottom. Refrigerant accumulates in the inner space of the container body 1.
- the inflow pipe 2 and the outflow pipe 3 are inserted into the upper space of the container body 1.
- the inflow pipe 2 and the outflow pipe 3 may be inserted from the upper end portion of the container body 1.
- the inflow pipe 2 and the outflow pipe 3 may be inserted from a lateral surface of the container body 1 such that the inflow pipe 2 and the outflow pipe 3 are located in the upper space of the container body 1.
- Refrigerant in a two-phase gas-liquid state passes through the inflow pipe 2, and flows into the container body 1 from an inlet 2a of the inflow pipe 2.
- Liquid refrigerant flowing into the container body 1 from the inlet 2a drops to the bottom of the container body 1 due to gravity and accumulates in the container body 1.
- the level of a gas-liquid interface GLI rises.
- the gas-liquid interface GLI moves towards the upper portion of the container body 1. Accordingly, as the volume of accumulating liquid refrigerant increases, the gas-liquid interface GLI becomes closer to the inflow pipe 2 and the outflow pipe 3 in distance.
- Gas refrigerant entering the container body 1 from the inlet 2a flows into the outflow pipe 3 from an outlet 3a.
- the gas refrigerant flowing into the outflow pipe 3 passes through the outflow pipe 3, flows out from the container body 1, and is suctioned into the compressor 10.
- an end portion of the inflow pipe 2 is located in the container body 1 and has a bent portion 2b that is bent in the X-direction.
- the inlet 2a is provided at the bent portion 2b to be opposite to the lateral surface of the container body 1.
- the inlet 2a is provided to be opposite to the lateral surface of the container body 1, so that the distance between the inlet 2a and the outlet 3a can be increased. Therefore, this can reduce the likelihood that liquid refrigerant flows into the outlet 3a from the inlet 2a. Also.
- the velocity of liquid refrigerant flowing through the inflow pipe 2 is reduced by the bent portion 2b.
- the liquid refrigerant flowing out from the inlet 2a reduces its momentum, so that when the liquid refrigerant drops to the gas-liquid interface GLI, ripples over the gas-liquid interface GLI can be suppressed.
- the inlet 2a it is desirable for the inlet 2a to be provided at a location where the inlet 2a does not overlap the outflow pipe 3 in the up-down direction of the container body 1.
- Fig. 4 illustrates a relationship between a height and a cross-sectional area of the container body 1 of the refrigerant reservoir container 101 according to Embodiment 1.
- Fig. 5 illustrates a relationship between the height and an inner volume of the container body 1 of the refrigerant reservoir container 101 according to Embodiment 1.
- the container body 1 has a substantially truncated conical shape with its inner space having a cross-sectional area that gradually increases from the upper end towards the bottom.
- Figs. 4 and 5 illustrate a virtual container body VC with a cylindrical shape by the dotted line in the container body 1 for the purpose of comparison with the container body 1 with a substantially truncated conical shape.
- Fig. 4 illustrates, on the right side of the drawing, a cross-sectional area relationship diagram showing the relationship between the height of the container body and the cross-sectional area of the container body.
- Fig. 4 illustrates, on the left side of the drawing, the container body 1 of the refrigerant reservoir container 101 and the virtual container body VC.
- a first height position HPt1 and a second height position Hpt2 are illustrated, each of which shows a height position.
- the height corresponding to the first height position HPt1 is illustrated as a first reference line L1
- the height corresponding to the second height position Hpt2 is illustrated as a second reference line.
- the vertical axis represents the height of the container body 1 and the virtual container body VC
- the horizontal axis represents the cross-sectional area of the container body 1 and the virtual container body VC.
- the height increases towards the upper side of the drawing
- the cross-sectional area increases towards the right side of the drawing.
- the relationship between the height and the cross-sectional area of the container body 1 is illustrated by the solid line
- the relationship between the height and the cross-sectional area of the virtual container body VC is illustrated by the thick dotted line.
- the container body 1 has a substantially truncated conical shape with its cross-sectional area increasing towards the bottom, and thus the cross-sectional area of the container body 1 decreases towards the upper portion.
- the virtual container body VC has a cylindrical shape, and thus the cross-sectional area of the virtual container body VC is constant regardless of its height.
- the cross-sectional area of the container body 1 is equal to the cross-sectional area of the virtual container body VC. Accordingly, in the cross-sectional area relationship diagram, the point showing the cross-sectional area of the container body 1 at the first height position HPt1 coincides, at a first point XPt1, with the point showing the cross-sectional area of the virtual container body VC at the first height position HPt1. In the cross-sectional area relationship diagram, the point showing the cross-sectional area of the container body 1 at the second height position HPt2 is illustrated as a third point XPt3.
- the point showing the cross-sectional area of the virtual container body VC at the second height position HPt2 is illustrated as a second point XPt2.
- the cross-sectional area of the container body 1 is larger than the cross-sectional area of the virtual container body VC. Accordingly, the third point XPt3 is located on the right side relative to the second point XPt2.
- Fig. 5 illustrates, on the right side of the drawing, an inner volume relationship diagram showing the relationship between the height of the container body and the inner volume of the container body. Similar to Fig. 4 , Fig. 5 illustrates, on the left side of the drawing, the container body 1 and the virtual container body VC along with the first height position HPt1 and the second height position Hpt2. Fig. 5 also illustrates a third height position HPt3 showing the upper end portion of the container body 1 and the virtual container body VC. In the inner volume relationship diagram, the height corresponding to the third height position HPt3 is illustrated as a third reference line L3.
- the vertical axis represents the height of the container body 1 and the virtual container body VC
- the horizontal axis represents the inner volume of the container body 1 and the virtual container body VC.
- the height increases towards the upper side of the drawing
- the inner volume increases towards the right side of the drawing.
- the relationship between the height and the inner volume of the container body 1 is illustrated by the solid line
- the relationship between the height and the inner volume of the virtual container body VC is illustrated by the thick dotted line.
- the container body 1 Since the container body 1 has a substantially truncated conical shape with its cross-sectional area increasing towards the bottom, the inner volume of the container body 1 increases at a greater rate closer to the bottom. In contrast, since the virtual container body VC has a cylindrical shape, the inner volume of the virtual container body VC increases at a constant rate regardless of its height.
- the container body 1 has the same shape as the shape of the virtual container body VC, and thus their shapes overlap each other.
- the inner volume of the container body 1 increases between the first height position HPt1 and the third height position HPt3 at the same rate as the increase in the inner volume of the virtual container body VC between the first height position HPt1 and the third height position HPt3. Accordingly, between the first reference line L1 and the third reference line L3 in the inner volume relationship diagram, the difference in inner volume between the container body 1 and the virtual container body VC remains unchanged.
- the point showing the inner volume of the container body 1 at the second height position HPt2 is illustrated as a fifth point XPt5.
- the point showing the inner volume of the virtual container body VC at the second height position HPt2 is illustrated as a fourth point XPt4.
- the inner volume of the container body 1 is larger than the inner volume of the virtual container body VC. Accordingly, the fifth point XPt5 is located on the right side relative to the fourth point XPt4.
- the container body 1 has a substantially truncated conical shape.
- the inner volume of the container body 1 is larger than that of the virtual container body VC with a cylindrical shape, provided that the container body 1 and the virtual container body VC with a cylindrical shape both have the same height and the same shape of the upper end portion. Accordingly, the container body 1 can reserve a greater volume of liquid refrigerant than the volume of liquid refrigerant that can be reserved in the virtual container body VC.
- the container body 1 since the container body 1 has a substantially truncated conical shape, the volume of liquid refrigerant per unit height is larger closer to the bottom.
- liquid refrigerant can be kept reserved for a longer time with an adequate distance kept between the outlet 3a and the gas-liquid interface GLI.
- ripples may be generated on the gas-liquid interface GLI due to an inertial force of the two-phase gas-liquid refrigerant flowing into the container body 1.
- the liquid refrigerant scatters as liquid droplets in the container body 1.
- the liquid refrigerant can be restrained from flowing out from the container body 1.
- the volume of scattering liquid droplets increases in proportion to the area of the gas-liquid interface GLI.
- the cross-sectional area on the gas-liquid interface GLI is smaller compared to the cross-sectional area at the bottom of the container body 1. Accordingly, the volume of scattering liquid droplets can be reduced, so that the liquid droplets are less likely to reach the outlet 3a.
- the container body 1 can reserve a relatively large volume of liquid refrigerant at a location away from the outlet 3a, and can reduce the likelihood that the liquid droplets reach the outlet 3a when the gas-liquid interface GLI becomes close to the outlet 3a in distance.
- the refrigerant reservoir container 101 includes the container body 1 reserving refrigerant, the inflow pipe 2 inserted into the upper space of the container body 1 and having the inlet 2a through which the refrigerant flows into the container body 1, and the outflow pipe 3 inserted into the upper space of the container body 1 and having the outlet 3a through which the refrigerant flows out from the container body 1.
- the cross-sectional area of the inner space of the container body 1 where the outlet 3a of the outflow pipe 3 is located is larger towards the bottom of the container body 1 and away from the outlet 3a.
- the cross-sectional area of the inner space of the container body 1 is smaller closer to the outlet 3a. That is, even when liquid refrigerant accumulates in the container body 1, and the gas-liquid interface GLI becomes close to the outlet 3a in distance, the volume of liquid droplets that scatter due to ripples of the liquid refrigerant over the gas-liquid interface GLI is still reduced. Accordingly, the liquid refrigerant can be restrained from flowing out from the container body 1.
- the inflow pipe 2 and the outflow pipe 3 are inserted from the upper end portion of the container body 1, and the inlet 2a of the inflow pipe 2 is located on the lower side relative to the outlet 3a of the outflow pipe 3.
- the inlet 2a is located on the lower side relative to the outlet 3a, so that the liquid refrigerant that drops from the inlet 2a is less likely to flow into the outlet 3a.
- outlet 3a is located on the upper side relative to the inlet 2a, even when liquid refrigerant flowing into the container body 1 from the inlet 2a ripples over the gas-liquid interface GLI and thus liquid droplets scatter, the scattering liquid droplets are still less likely to flow into the outlet 3a.
- the refrigeration cycle device 100 includes the refrigerant reservoir container 101 described above, and the compressor 10 connected to the refrigerant reservoir container 101 through the outflow pipe 3.
- the compressor 10 connected to the refrigerant reservoir container 101 through the outflow pipe 3.
- a container body 1A and an inflow pipe 2A of a refrigerant reservoir container 101A according to the present embodiment are different in configuration from the container body 1 and the inflow pipe 2 in Embodiment 1, respectively.
- the refrigerant reservoir container 101A in the present embodiment is described below, mainly focusing on the differences from the refrigerant reservoir container 101 in Embodiment 1. Note that in the refrigeration cycle device 100 in Embodiment 1, the refrigerant reservoir container 101 according to Embodiment 1 can be replaced with the refrigerant reservoir container 101A according to the present embodiment.
- the configuration of the refrigeration cycle device 100, other than the refrigerant reservoir container, is the same as that in Embodiment 1, and therefore descriptions of the configuration are omitted.
- the same constituent elements as those in Embodiment 1 are denoted by the same reference signs, and descriptions thereof are appropriately omitted.
- Fig. 6 is a front view of the refrigerant reservoir container 101A according to Embodiment 2.
- the solid-line arrows in Fig. 6 conceptually illustrate a refrigerant flow.
- Fig. 7 is a sectional view illustrating the A-A cross section of Fig. 6 .
- the container body 1A of the refrigerant reservoir container 101A according to the present embodiment has a cylindrical shape.
- a shielding plate 4 is provided in the container body 1A.
- the inflow pipe 2A and the outflow pipe 3 are inserted into the upper space of the container body 1A.
- the inflow pipe 2A and the outflow pipe 3 may be inserted from the upper end portion of the container body 1A.
- the shielding plate 4 partitions the interior of the container body 1A into a first region SP1 where the outlet 3a of the outflow pipe 3 is located, and a second region SP2 where the inlet 2a of the inflow pipe 2A is located.
- the shielding plate 4 is provided such that the cross-sectional area of the inner space of the container body 1A where the outlet 3a is located is larger towards the bottom of the container body 1A and away from the outlet 3a.
- the inner space where the outlet 3a is located is formed as the first region SP1 with a truncated conical shape by providing the shielding plate 4 in the container body 1A.
- the inner space of the container body 1A is partitioned into the first region SP1 surrounded by the shielding plate 4, the second region SP2 formed between the lateral surface of the container body 1A and the shielding plate 4, and a third region SP3 formed between a lower end portion of the shielding plate 4 and the bottom of the container body 1A.
- the first region SP1 and the second region SP2 both connect to the third region SP3. Accordingly, the first region SP1, the second region SP2, and the third region SP3 communicate with each other.
- the outlet 3a is located in the first region SP1, while the inlet 2a is located in the second region SP2.
- Two-phase gas-liquid refrigerant flows into the second region SP2 from the inlet 2a.
- Gas refrigerant passes through the third region SP3 and flows into the first region SP1.
- Gas refrigerant flowing into the first region SP1 enters the outflow pipe 3 from the outlet 3a and flows out from the container body 1A.
- Liquid refrigerant passes through the second region SP2 and accumulates in the third region SP3.
- the level of the gas-liquid interface GLI rises.
- the volume of accumulating liquid refrigerant exceeds the volume of the third region SP3, the excessive volume of liquid refrigerant accumulates in the first region SP1 and the second region SP2.
- the gas-liquid interface GLI is located in the first region SP1 and the second region SP2.
- the second region SP2 and the third region SP3 serve as a passage through which refrigerant flowing from the inlet 2a reaches the first region SP1 and the outlet 3a.
- the shielding plate 4 is connected to the upper end portion of the container body 1A.
- the shielding plate 4 may be connected to a lateral surface of the container body 1A.
- the shielding plate 4 may be connected to an inner lateral surface of the container body 1A through a hook attached to the inner lateral surface of the container body 1A.
- the shielding plate 4 may be provided with a through hole through which the outflow pipe 3 passes.
- the outflow pipe 3 passes through the through hole and reaches the first region SP1. Accordingly, it is possible to locate the outlet 3a in the first region SP1.
- the inflow pipe 2A may be inserted into the second region SP2 from the upper end portion of the container body 1A, or may be inserted into the second region SP2 from the lateral surface of the container body 1A.
- the shielding plate 4 separates the inflow pipe 2A from the outflow pipe 3.
- liquid refrigerant is prevented from directly flowing into the outlet 3a from the inlet 2a.
- Liquid droplets are generated on the gas-liquid interface GLI in the second region SP2 due to ripples of the liquid refrigerant flowing out from the inlet 2a and dropping to the gas-liquid interface GLI.
- the shielding plate 4 there is no likelihood that the liquid droplets reach the outlet 3a located in the first region SP1 partitioned off by the shielding plate 4.
- the inlet 2a and the outlet 3a are not greatly distanced from each other, or the flow rate of refrigerant flowing into the container body 1A is not decreased. Therefore, as illustrated in Figs. 6 and 7 , it is allowable that the inflow pipe 2A does not have the bent portion 2b.
- the refrigerant reservoir container 101A includes the shielding plate 4 provided in the container body 1A.
- the shielding plate 4 partitions the interior of the container body 1A into the first region SP1 that is an inner space where the outlet 3a of the outflow pipe 3 is located, and the second region SP2 where the inlet 2a of the inflow pipe 2A is located.
- the third region SP3 is formed between the lower end portion of the shielding plate 4 and the bottom of the container body 1A.
- the first region SP1 and the second region SP2 connect to the third region SP3.
- the inlet 2a is separated from the outlet 3a by the shielding plate 4. Accordingly, it is possible to restrain liquid refrigerant flowing out from the inlet 2a from flowing into the outlet 3a.
- the container body 1A has a cylindrical shape, and thus can reserve an increased volume of liquid refrigerant compared to a container body with a truncated conical shape, provided that the container body with the truncated conical shape and the container body 1A both have the same height and the same cross-sectional area of the bottom.
- the shielding plate 4 is provided in the container body 1A with a cylindrical shape.
- the shielding plate 4 has a hollow truncated conical shape widening from the upper end portion of the container body 1A towards the bottom, and being open on a top base and a bottom base.
- the first region SP1 is an inner space surrounded by the shielding plate 4, while the second region SP2 is a space between the lateral surface of the container body 1A and the shielding plate 4.
- This configuration can be obtained by solely connecting the shielding plate 4 with a hollow truncated conical shape to the container body 1A with a cylindrical shape, and thus does not complicate the manufacturing process of the refrigerant reservoir container 101A.
- a shielding plate 4A of a refrigerant reservoir container 101B according to the present embodiment is different in configuration from the shielding plate 4 in Embodiment 2.
- the shielding plate 4A in the present embodiment is described below, mainly focusing on the differences from the shielding plate 4 in Embodiment 2.
- the refrigerant reservoir container 101 according to Embodiment 1 can be replaced with the refrigerant reservoir container 101B according to the present embodiment.
- the configuration of the refrigeration cycle device 100, other than the refrigerant reservoir container, is the same as that in Embodiment 1, and therefore descriptions of the configuration are omitted.
- the same constituent elements as those in Embodiments 1 and 2 are denoted by the same reference signs, and descriptions thereof are appropriately omitted.
- Fig. 8 is a front view of the refrigerant reservoir container 101B according to Embodiment 3.
- the solid-line arrows in Fig. 8 conceptually illustrate a refrigerant flow.
- Fig. 9 is a sectional view illustrating the B-B cross section of Fig. 8 .
- Fig. 10 is a sectional view illustrating the C-C cross section of Fig. 8 .
- the shielding plate 4A has a plurality of through holes 6.
- Each of the through holes 6 has, for example, a round shape.
- Each of the through holes 6 may have an elliptical shape.
- Figs. 7 and 9 illustrate the identical cross-sectional view.
- the plurality of through holes 6 are provided at the same height position in the up-down direction of the container body 1A.
- the plurality of through holes 6 are provided in the circumferential direction of the shielding plate 4A. Note that while Fig. 10 illustrates two through holes 6, it is sufficient that one or more through holes 6 are provided. In the up-down direction of the container body 1A, another through hole 6 may be provided at a different height position in addition to the plurality of through holes 6 provided at the same height position.
- the volume of accumulating liquid refrigerant that exceeds the volume of the third region SP3 accumulates in the first region SP1 and the second region SP2.
- the pressure in the second region SP2 is higher than the pressure in the first region SP1. This causes pulsation of the refrigerant between the first region SP1 and the second region SP2.
- gas refrigerant flows into the first region SP1 from the second region SP2 through the through holes 6. This suppresses an increase in the pressure in the second region SP2. Therefore, pulsation of the refrigerant between the first region SP1 and the second region SP2 is suppressed.
- the shielding plate 4A has the through holes 6, and the first region SP1 and the second region SP2 communicate with each other through the through holes 6.
- gas refrigerant flowing into the second region SP2 passes through the through holes 6 and enters the first region SP1. This reduces variations in the pressure in the container body 1A, and as a consequence, suppresses pulsation of the refrigerant.
- the shielding plate 4A has the plurality of through holes 6. At least two or more of the plurality of through holes 6 are provided at the same height position in the up-down direction of the container body 1A. With this configuration, gas refrigerant flows more efficiently from the second region SP2 to the first region SP1, compared to a configuration in which the through holes 6 are arranged in a line in the up-down direction of the container body 1A.
- the refrigerant reservoir containers 101, 101A, and 101B, and the refrigeration cycle device 100 are not limited to Embodiments 1 to 3 described above.
- the refrigerant reservoir container may employ a configuration in which the container body 1 in Embodiment 1 is provided with the shielding plate 4 in Embodiment 2.
- the refrigerant reservoir container may employ a configuration in which the container body 1A in Embodiment 2 is provided with the inflow pipe 2 in Embodiment 1.
- Embodiments 1 to 3 can be combined with each other within the range not impairing the functions or structures of each of Embodiments 1 to 3.
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Abstract
Description
- The present disclosure relates to a refrigerant reservoir container reserving refrigerant therein, and also relates to a refrigeration cycle device including the refrigerant reservoir container.
- In a refrigeration cycle device, when a compressor suctions liquid refrigerant, refrigerating machine oil in a shell of the compressor is diluted with the liquid refrigerant, which causes seizure of sliding parts of the compressor. In view of that, a configuration of a refrigeration cycle device is proposed, in which a refrigerant reservoir container is provided upstream of a suction port through which a compressor suctions refrigerant. The refrigerant reservoir container is configured to separate two-phase gas-liquid refrigerant into gas refrigerant and liquid refrigerant and reserve the liquid refrigerant in the container. For example,
Patent Literature 1 discloses a gas-liquid separator located in a refrigeration cycle to separate refrigerant into liquid refrigerant and gas refrigerant. The gas-liquid separator has a function of the refrigerant reservoir container, and includes a gas-phase refrigerant outflow pipe provided in an upper portion of the container to allow the gas refrigerant to flow out from the gas-liquid separator, a liquid-phase refrigerant outflow pipe provided in a lower portion of the container to allow the liquid refrigerant to flow out from the gas-liquid separator, a first plate configured to partition a refrigerant inflow chamber from a liquid-phase refrigerant accumulation chamber, and a second plate configured to partition the refrigerant inflow chamber from a gas-phase refrigerant collection chamber. - Patent Literature 1:
Japanese Unexamined Patent Application Publication No. 2015-172469 - In the gas-liquid separator described in
Patent Literature 1, since the first plate partitions the refrigerant inflow chamber from the liquid-phase refrigerant accumulation chamber, the accumulating liquid refrigerant is restrained from rolling up and entering the refrigerant inflow chamber. In addition, since the second plate partitions the refrigerant inflow chamber from the gas-phase refrigerant collection chamber, refrigerant having flowed into the refrigerant inflow chamber and having become liquid droplets is restrained from entering the gas-phase refrigerant collection chamber. As a result, in the gas-liquid separator inPatent Literature 1, the accumulating liquid refrigerant is restrained from entering the refrigerant outflow pipe through which gas refrigerant flows out. - However, as disclosed in
Patent Literature 1, the plates are used to simply partition a region into which refrigerant flows, a region in which liquid refrigerant is reserved, and a region in which gas refrigerant is reserved, from each other. This cannot always suppress roll-up of the accumulating liquid refrigerant, or restrain scattering liquid droplets from entering the refrigerant outflow pipe. For example, when liquid refrigerant is reserved up to the upper portion of the container, the reserved liquid refrigerant may ripple and scatter, and the scattering liquid droplets may reach the refrigerant outflow pipe and flow into the compressor along with gas refrigerant. As the area of gas-liquid interface increases, ripples of the liquid refrigerant spread more widely over the gas-liquid interface in the refrigerant reservoir container. In addition, the volume of scattering liquid droplets increases in proportion to the area of gas-liquid interface. For this reason, even when the volume of liquid refrigerant reserved is below the maximum reservoir volume, the liquid refrigerant that ripples over the gas-liquid interface and thus scatters may still reach the refrigerant outflow pipe and may flow out along with the gas refrigerant from the refrigerant reservoir container. - The present disclosure has been made in view of the above problems, and it is an object of the present disclosure to provide a refrigerant reservoir container that restrains liquid refrigerant from flowing out along with gas refrigerant from the refrigerant reservoir container, and a refrigeration cycle device including the refrigerant reservoir container.
- A refrigerant reservoir container according to one embodiment of the present disclosure includes: a container body reserving refrigerant; an inflow pipe inserted into an upper space of the container body, the inflow pipe having an inlet through which the refrigerant flows into the container body; and an outflow pipe inserted into the upper space of the container body, the outflow pipe having an outlet through which the refrigerant flows out from the container body, wherein a cross-sectional area of an inner space of the container body where the outlet of the outflow pipe is located is larger towards a bottom of the container body and away from the outlet.
- A refrigeration cycle device according to another embodiment of the present disclosure includes: the refrigerant reservoir container described above; and a compressor connected to the refrigerant reservoir container through the outflow pipe. Advantageous Effects of Invention
- According to one embodiment of the present disclosure, in the container body of a gas-liquid reservoir container, the cross-sectional area of the inner space where the outlet of the outflow pipe is located, through which refrigerant flows out from the gas-liquid reservoir container, increases towards the bottom of the container body. The outflow pipe is inserted into the upper space of the container body, and thus the cross-sectional area of the inner space near the outlet is smaller than the cross-sectional area of the inner space near the bottom of the container body. With this configuration, even when liquid refrigerant is reserved up to the vicinity of the outlet, ripples of the liquid refrigerant are generated still on a small area of gas-liquid interface. This can reduce the volume of scattering liquid droplets. Therefore, the liquid droplets scattering from the gas-liquid interface are restrained from reaching the refrigerant outflow pipe and flowing along with gas refrigerant into the compressor. Brief Description of Drawings
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- [
Fig. 1] Fig. 1 is a refrigerant circuit diagram of a refrigeration cycle device including a refrigerant reservoir container according toEmbodiment 1. - [
Fig. 2] Fig. 2 is a front view of the refrigerant reservoir container according toEmbodiment 1. - [
Fig. 3] Fig. 3 is a plan view of the refrigerant reservoir container according toEmbodiment 1. - [
Fig. 4] Fig. 4 illustrates a relationship between a height and a cross-sectional area of a container body of the refrigerant reservoir container according toEmbodiment 1. - [
Fig. 5] Fig. 5 illustrates a relationship between the height and an inner volume of the container body of the refrigerant reservoir container according toEmbodiment 1. - [
Fig. 6] Fig. 6 is a front view of a refrigerant reservoir container according toEmbodiment 2. - [
Fig. 7] Fig. 7 is a sectional view illustrating an A-A cross section ofFig. 6 . - [
Fig. 8] Fig. 8 is a front view of a refrigerant reservoir container according to Embodiment 3. - [
Fig. 9] Fig. 9 is a sectional view illustrating a B-B cross section ofFig. 8 . - [
Fig. 10] Fig. 10 is a sectional view illustrating a C-C cross section ofFig. 8 . Description of Embodiments - Hereinafter, a refrigerant reservoir container according to the present embodiment and a refrigeration cycle device including the refrigerant reservoir container will be described with reference to the drawings. The present disclosure is not limited to the embodiments described below, and can be variously modified without departing from the gist of the present disclosure. In addition, the present disclosure includes all combinations of configurations that can be combined among the configurations shown in the embodiments described below. The configurations of the refrigerant reservoir container and the refrigeration cycle device are illustrated in the drawings merely as examples. The refrigerant reservoir container and the refrigeration cycle device illustrated in the drawings are not intended to limit the configurations of the present disclosure. In the descriptions below, terms that represent directions (for example, "up," "down," "right," "left," "front," and "rear") are appropriately used for the sake of easy understanding. However, these terms are used merely for description purposes, and are not intended to limit the present disclosure.
- In the drawings, the same reference signs denote the same or equivalent components, which are common throughout the entire specification. Note that the relative relationship of sizes of the constituent components, the shapes of the constituent components, and the like in the drawings may differ from those of actual ones. In the drawings, the X-direction shows a left-right direction of the refrigerant reservoir container, and is illustrated with the arrow pointing to the leftward direction from the rightward side. The Y-direction shows a front-rear direction of the refrigerant reservoir container, and is illustrated with the arrow pointing to the rearward direction from the forward side. The Z-direction shows an up-down direction of the refrigerant reservoir container, and is illustrated with the arrow pointing to the upward direction from the downward side.
- With reference to
Fig. 1 , arefrigeration cycle device 100 including arefrigerant reservoir container 101 according toEmbodiment 1 is described below.Fig. 1 is a refrigerant circuit diagram of therefrigeration cycle device 100 including therefrigerant reservoir container 101 according toEmbodiment 1. As illustrated inFig. 1 , therefrigeration cycle device 100 according toEmbodiment 1 includes acompressor 10, aflow switching device 11, anoutdoor heat exchanger 12, anexpansion mechanism 13, anindoor heat exchanger 14, and therefrigerant reservoir container 101. Thecompressor 10, theflow switching device 11, theoutdoor heat exchanger 12, theexpansion mechanism 13, theindoor heat exchanger 14, and therefrigerant reservoir container 101 are connected by arefrigerant pipe 15. With this connection, arefrigerant circuit 200 is formed in which refrigerant circulates through therefrigerant pipe 15. - In the
refrigeration cycle device 100, therefrigerant reservoir container 101 is connected to thecompressor 10 through anoutflow pipe 3 that is a portion of therefrigerant pipe 15. Thecompressor 10 suctions refrigerant, compresses the suctioned refrigerant into a high-temperature high-pressure state, and discharges the compressed refrigerant. Thecompressor 10 is, for example, an inverter compressor. Refrigerant discharged from thecompressor 10 flows into theoutdoor heat exchanger 12 or theindoor heat exchanger 14 via theflow switching device 11. - The
flow switching device 11 has a function of switching between refrigerant flow passages. Theflow switching device 11 switches operation between cooling and heating. In the cooling operation, refrigerant discharged from thecompressor 10 flows through theoutdoor heat exchanger 12, theexpansion mechanism 13, theindoor heat exchanger 14, and therefrigerant reservoir container 101 in this order, and flows back to thecompressor 10. In contrast, in the heating operation, refrigerant discharged from thecompressor 10 flows through theindoor heat exchanger 14, theexpansion mechanism 13, theoutdoor heat exchanger 12, and therefrigerant reservoir container 101 in this order, and flows back to thecompressor 10. That is, during the cooling operation in a room, theoutdoor heat exchanger 12 serves as a condenser, while theindoor heat exchanger 14 serves as an evaporator. During the heating operation in a room, theindoor heat exchanger 14 serves as a condenser, while theoutdoor heat exchanger 12 serves as an evaporator. Theflow switching device 11 is, for example, a four-way valve. Theflow switching device 11 may be made up of a combination of two-way valves or three-way valves. - The
expansion mechanism 13 is a pressure-reducing device configured to reduce the pressure of refrigerant flowing in therefrigerant circuit 200 to expand the refrigerant. Theexpansion mechanism 13 is constituted by, for example, an electronic expansion valve whose opening degree is variably controlled. - In the
refrigeration cycle device 100, it is optimal that superheated gas is suctioned into thecompressor 10 as refrigerant. However, the state of refrigerant to be suctioned into thecompressor 10 depends on a refrigerant distribution in therefrigerant circuit 200. Thus, refrigerant containing liquid refrigerant may sometimes be suctioned into thecompressor 10. When the liquid refrigerant is suctioned into thecompressor 10, refrigerating machine oil in a shell of thecompressor 10 is diluted with the liquid refrigerant. This may cause seizure of sliding parts of thecompressor 10. In view of that, in therefrigeration cycle device 100, therefrigerant reservoir container 101 is installed upstream of thecompressor 10 in the refrigerant flow direction. Two-phase gas-liquid refrigerant flowing out from the evaporator and passing through theflow switching device 11 flows into therefrigerant reservoir container 101 from aninflow pipe 2 that is a portion of therefrigerant pipe 15. The two-phase gas-liquid refrigerant flowing into therefrigerant reservoir container 101 is separated into gas refrigerant and liquid refrigerant. The liquid refrigerant accumulates in therefrigerant reservoir container 101. The gas refrigerant passes through theoutflow pipe 3, flows out from therefrigerant reservoir container 101, and is suctioned into thecompressor 10. Therefore, in therefrigeration cycle device 100 according to the present embodiment, liquid refrigerant is separated from the two-phase gas-liquid refrigerant and reserved in therefrigerant reservoir container 101, so that the liquid refrigerant can be restrained from being suctioned into thecompressor 10. - Note that the
refrigeration cycle device 100 is not limited to being an air-conditioning apparatus capable of switching operation between cooling and heating as described above. Therefrigerant reservoir container 101 may be applied to a refrigeration cycle device such as a dehumidifier or a refrigerator-freezer. - The
refrigerant reservoir container 101 according to the present embodiment is described below with reference toFigs. 2 and3 .Fig. 2 is a front view of therefrigerant reservoir container 101 according toEmbodiment 1. The arrows inFig. 2 conceptually illustrate a refrigerant flow.Fig. 3 is a plan view of therefrigerant reservoir container 101 according toEmbodiment 1. - As illustrated in
Fig. 2 , therefrigerant reservoir container 101 includes acontainer body 1, theinflow pipe 2, and theoutflow pipe 3. Thecontainer body 1 has a substantially truncated conical shape with its inner space having a cross-sectional area that gradually increases from the upper end towards the bottom. Refrigerant accumulates in the inner space of thecontainer body 1. Theinflow pipe 2 and theoutflow pipe 3 are inserted into the upper space of thecontainer body 1. As illustrated inFig. 2 , theinflow pipe 2 and theoutflow pipe 3 may be inserted from the upper end portion of thecontainer body 1. Although not illustrated, theinflow pipe 2 and theoutflow pipe 3 may be inserted from a lateral surface of thecontainer body 1 such that theinflow pipe 2 and theoutflow pipe 3 are located in the upper space of thecontainer body 1. - Refrigerant in a two-phase gas-liquid state passes through the
inflow pipe 2, and flows into thecontainer body 1 from aninlet 2a of theinflow pipe 2. Liquid refrigerant flowing into thecontainer body 1 from theinlet 2a drops to the bottom of thecontainer body 1 due to gravity and accumulates in thecontainer body 1. As the volume of liquid refrigerant that accumulates in thecontainer body 1 increases, the level of a gas-liquid interface GLI rises. In other words, as the volume of liquid refrigerant that accumulates in thecontainer body 1 increases, the gas-liquid interface GLI moves towards the upper portion of thecontainer body 1. Accordingly, as the volume of accumulating liquid refrigerant increases, the gas-liquid interface GLI becomes closer to theinflow pipe 2 and theoutflow pipe 3 in distance. - Gas refrigerant entering the
container body 1 from theinlet 2a flows into theoutflow pipe 3 from anoutlet 3a. The gas refrigerant flowing into theoutflow pipe 3 passes through theoutflow pipe 3, flows out from thecontainer body 1, and is suctioned into thecompressor 10. - As illustrated in
Figs. 2 and3 , an end portion of theinflow pipe 2 is located in thecontainer body 1 and has abent portion 2b that is bent in the X-direction. Theinlet 2a is provided at thebent portion 2b to be opposite to the lateral surface of thecontainer body 1. Theinlet 2a is provided to be opposite to the lateral surface of thecontainer body 1, so that the distance between theinlet 2a and theoutlet 3a can be increased. Therefore, this can reduce the likelihood that liquid refrigerant flows into theoutlet 3a from theinlet 2a. Also. The velocity of liquid refrigerant flowing through theinflow pipe 2 is reduced by thebent portion 2b. Consequently, the liquid refrigerant flowing out from theinlet 2a reduces its momentum, so that when the liquid refrigerant drops to the gas-liquid interface GLI, ripples over the gas-liquid interface GLI can be suppressed. Note that it is desirable for theinlet 2a to be provided at a location where theinlet 2a does not overlap theoutflow pipe 3 in the up-down direction of thecontainer body 1. - Next, the
container body 1 is described with reference toFigs. 4 and5 .Fig. 4 illustrates a relationship between a height and a cross-sectional area of thecontainer body 1 of therefrigerant reservoir container 101 according toEmbodiment 1.Fig. 5 illustrates a relationship between the height and an inner volume of thecontainer body 1 of therefrigerant reservoir container 101 according toEmbodiment 1. As described above, thecontainer body 1 has a substantially truncated conical shape with its inner space having a cross-sectional area that gradually increases from the upper end towards the bottom.Figs. 4 and5 illustrate a virtual container body VC with a cylindrical shape by the dotted line in thecontainer body 1 for the purpose of comparison with thecontainer body 1 with a substantially truncated conical shape. -
Fig. 4 illustrates, on the right side of the drawing, a cross-sectional area relationship diagram showing the relationship between the height of the container body and the cross-sectional area of the container body.Fig. 4 illustrates, on the left side of the drawing, thecontainer body 1 of therefrigerant reservoir container 101 and the virtual container body VC. In thecontainer body 1, a first height position HPt1 and a second height position Hpt2 are illustrated, each of which shows a height position. In the cross-sectional area relationship diagram, the height corresponding to the first height position HPt1 is illustrated as a first reference line L1, while the height corresponding to the second height position Hpt2 is illustrated as a second reference line. - In the cross-sectional area relationship diagram, the vertical axis represents the height of the
container body 1 and the virtual container body VC, while the horizontal axis represents the cross-sectional area of thecontainer body 1 and the virtual container body VC. On the vertical axis, the height increases towards the upper side of the drawing, while on the horizontal axis, the cross-sectional area increases towards the right side of the drawing. In the cross-sectional area relationship diagram, the relationship between the height and the cross-sectional area of thecontainer body 1 is illustrated by the solid line, while the relationship between the height and the cross-sectional area of the virtual container body VC is illustrated by the thick dotted line. Thecontainer body 1 has a substantially truncated conical shape with its cross-sectional area increasing towards the bottom, and thus the cross-sectional area of thecontainer body 1 decreases towards the upper portion. In contrast, the virtual container body VC has a cylindrical shape, and thus the cross-sectional area of the virtual container body VC is constant regardless of its height. - As illustrated in
Fig. 4 , at the first height position HPt1, the cross-sectional area of thecontainer body 1 is equal to the cross-sectional area of the virtual container body VC. Accordingly, in the cross-sectional area relationship diagram, the point showing the cross-sectional area of thecontainer body 1 at the first height position HPt1 coincides, at a first point XPt1, with the point showing the cross-sectional area of the virtual container body VC at the first height position HPt1. In the cross-sectional area relationship diagram, the point showing the cross-sectional area of thecontainer body 1 at the second height position HPt2 is illustrated as a third point XPt3. Further, in the cross-sectional area relationship diagram, the point showing the cross-sectional area of the virtual container body VC at the second height position HPt2 is illustrated as a second point XPt2. At the second height position HPt2, the cross-sectional area of thecontainer body 1 is larger than the cross-sectional area of the virtual container body VC. Accordingly, the third point XPt3 is located on the right side relative to the second point XPt2. -
Fig. 5 illustrates, on the right side of the drawing, an inner volume relationship diagram showing the relationship between the height of the container body and the inner volume of the container body. Similar toFig. 4 ,Fig. 5 illustrates, on the left side of the drawing, thecontainer body 1 and the virtual container body VC along with the first height position HPt1 and the second height position Hpt2.Fig. 5 also illustrates a third height position HPt3 showing the upper end portion of thecontainer body 1 and the virtual container body VC. In the inner volume relationship diagram, the height corresponding to the third height position HPt3 is illustrated as a third reference line L3. - In the inner volume relationship diagram in
Fig. 5 , the vertical axis represents the height of thecontainer body 1 and the virtual container body VC, while the horizontal axis represents the inner volume of thecontainer body 1 and the virtual container body VC. On the vertical axis, the height increases towards the upper side of the drawing, while on the horizontal axis, the inner volume increases towards the right side of the drawing. In the inner volume relationship diagram, the relationship between the height and the inner volume of thecontainer body 1 is illustrated by the solid line, while the relationship between the height and the inner volume of the virtual container body VC is illustrated by the thick dotted line. Since thecontainer body 1 has a substantially truncated conical shape with its cross-sectional area increasing towards the bottom, the inner volume of thecontainer body 1 increases at a greater rate closer to the bottom. In contrast, since the virtual container body VC has a cylindrical shape, the inner volume of the virtual container body VC increases at a constant rate regardless of its height. - As illustrated in
Fig. 5 , between the first height position HPt1 and the third height position HPt3, thecontainer body 1 has the same shape as the shape of the virtual container body VC, and thus their shapes overlap each other. In other words, the inner volume of thecontainer body 1 increases between the first height position HPt1 and the third height position HPt3 at the same rate as the increase in the inner volume of the virtual container body VC between the first height position HPt1 and the third height position HPt3. Accordingly, between the first reference line L1 and the third reference line L3 in the inner volume relationship diagram, the difference in inner volume between thecontainer body 1 and the virtual container body VC remains unchanged. In the inner volume relationship diagram, the point showing the inner volume of thecontainer body 1 at the second height position HPt2 is illustrated as a fifth point XPt5. Further, in the cross-sectional area relationship diagram, the point showing the inner volume of the virtual container body VC at the second height position HPt2 is illustrated as a fourth point XPt4. At the second height position HPt2, the inner volume of thecontainer body 1 is larger than the inner volume of the virtual container body VC. Accordingly, the fifth point XPt5 is located on the right side relative to the fourth point XPt4. - As described above, the
container body 1 has a substantially truncated conical shape. Thus, the inner volume of thecontainer body 1 is larger than that of the virtual container body VC with a cylindrical shape, provided that thecontainer body 1 and the virtual container body VC with a cylindrical shape both have the same height and the same shape of the upper end portion. Accordingly, thecontainer body 1 can reserve a greater volume of liquid refrigerant than the volume of liquid refrigerant that can be reserved in the virtual container body VC. In addition, since thecontainer body 1 has a substantially truncated conical shape, the volume of liquid refrigerant per unit height is larger closer to the bottom. Consequently, a longer time is spent for the gas-liquid interface GLI to become close to theoutlet 3a in distance, compared to the virtual container body VC. In other words, in thecontainer body 1, liquid refrigerant can be kept reserved for a longer time with an adequate distance kept between theoutlet 3a and the gas-liquid interface GLI. In thecontainer body 1, ripples may be generated on the gas-liquid interface GLI due to an inertial force of the two-phase gas-liquid refrigerant flowing into thecontainer body 1. When ripples are generated on the gas-liquid interface GLI, the liquid refrigerant scatters as liquid droplets in thecontainer body 1. In a case where theoutlet 3a and the gas-liquid interface GLI are adequately distanced from each other, even when the liquid droplets scatter from the gas-liquid interface GLI, the liquid droplets are still less likely to reach theoutlet 3a. Accordingly, the liquid refrigerant can be restrained from flowing out from thecontainer body 1. - As the area of the gas-liquid interface GLI increases, ripples spread more widely over the gas-liquid interface GLI. Further, the volume of scattering liquid droplets increases in proportion to the area of the gas-liquid interface GLI. In the
container body 1, when the gas-liquid interface GLI becomes close to theoutlet 3a in distance, the cross-sectional area on the gas-liquid interface GLI is smaller compared to the cross-sectional area at the bottom of thecontainer body 1. Accordingly, the volume of scattering liquid droplets can be reduced, so that the liquid droplets are less likely to reach theoutlet 3a. With this configuration, thecontainer body 1 can reserve a relatively large volume of liquid refrigerant at a location away from theoutlet 3a, and can reduce the likelihood that the liquid droplets reach theoutlet 3a when the gas-liquid interface GLI becomes close to theoutlet 3a in distance. - As described above, the
refrigerant reservoir container 101 according to the present embodiment includes thecontainer body 1 reserving refrigerant, theinflow pipe 2 inserted into the upper space of thecontainer body 1 and having theinlet 2a through which the refrigerant flows into thecontainer body 1, and theoutflow pipe 3 inserted into the upper space of thecontainer body 1 and having theoutlet 3a through which the refrigerant flows out from thecontainer body 1. The cross-sectional area of the inner space of thecontainer body 1 where theoutlet 3a of theoutflow pipe 3 is located is larger towards the bottom of thecontainer body 1 and away from theoutlet 3a. - In this configuration, the cross-sectional area of the inner space of the
container body 1 is smaller closer to theoutlet 3a. That is, even when liquid refrigerant accumulates in thecontainer body 1, and the gas-liquid interface GLI becomes close to theoutlet 3a in distance, the volume of liquid droplets that scatter due to ripples of the liquid refrigerant over the gas-liquid interface GLI is still reduced. Accordingly, the liquid refrigerant can be restrained from flowing out from thecontainer body 1. - In the configuration of the
refrigerant reservoir container 101 according to the present embodiment, theinflow pipe 2 and theoutflow pipe 3 are inserted from the upper end portion of thecontainer body 1, and theinlet 2a of theinflow pipe 2 is located on the lower side relative to theoutlet 3a of theoutflow pipe 3. With this configuration, theinlet 2a is located on the lower side relative to theoutlet 3a, so that the liquid refrigerant that drops from theinlet 2a is less likely to flow into theoutlet 3a. In addition, since theoutlet 3a is located on the upper side relative to theinlet 2a, even when liquid refrigerant flowing into thecontainer body 1 from theinlet 2a ripples over the gas-liquid interface GLI and thus liquid droplets scatter, the scattering liquid droplets are still less likely to flow into theoutlet 3a. - In the configuration of the
refrigeration cycle device 100 according to the present embodiment, therefrigeration cycle device 100 includes therefrigerant reservoir container 101 described above, and thecompressor 10 connected to therefrigerant reservoir container 101 through theoutflow pipe 3. With this configuration, liquid refrigerant can be restrained from being suctioned into thecompressor 10 from therefrigerant reservoir container 101 through theoutflow pipe 3. Therefore, this configuration can reduce the likelihood that refrigerating machine oil in thecompressor 10 is diluted with the liquid refrigerant, which causes seizure of sliding parts of thecompressor 10. - A
container body 1A and aninflow pipe 2A of arefrigerant reservoir container 101A according to the present embodiment are different in configuration from thecontainer body 1 and theinflow pipe 2 inEmbodiment 1, respectively. Therefrigerant reservoir container 101A in the present embodiment is described below, mainly focusing on the differences from therefrigerant reservoir container 101 inEmbodiment 1. Note that in therefrigeration cycle device 100 inEmbodiment 1, therefrigerant reservoir container 101 according toEmbodiment 1 can be replaced with therefrigerant reservoir container 101A according to the present embodiment. The configuration of therefrigeration cycle device 100, other than the refrigerant reservoir container, is the same as that inEmbodiment 1, and therefore descriptions of the configuration are omitted. The same constituent elements as those inEmbodiment 1 are denoted by the same reference signs, and descriptions thereof are appropriately omitted. - With reference to
Figs. 6 and7 , thecontainer body 1A is described below.Fig. 6 is a front view of therefrigerant reservoir container 101A according toEmbodiment 2. The solid-line arrows inFig. 6 conceptually illustrate a refrigerant flow.Fig. 7 is a sectional view illustrating the A-A cross section ofFig. 6 . As illustrated inFig. 6 , thecontainer body 1A of therefrigerant reservoir container 101A according to the present embodiment has a cylindrical shape. In thecontainer body 1A, ashielding plate 4 is provided. Theinflow pipe 2A and theoutflow pipe 3 are inserted into the upper space of thecontainer body 1A. As illustrated inFig. 6 , theinflow pipe 2A and theoutflow pipe 3 may be inserted from the upper end portion of thecontainer body 1A. - The shielding
plate 4 partitions the interior of thecontainer body 1A into a first region SP1 where theoutlet 3a of theoutflow pipe 3 is located, and a second region SP2 where theinlet 2a of theinflow pipe 2A is located. As illustrated inFig. 6 , the shieldingplate 4 is provided such that the cross-sectional area of the inner space of thecontainer body 1A where theoutlet 3a is located is larger towards the bottom of thecontainer body 1A and away from theoutlet 3a. In other words, in the present embodiment, while thecontainer body 1A has a cylindrical shape, the inner space where theoutlet 3a is located is formed as the first region SP1 with a truncated conical shape by providing theshielding plate 4 in thecontainer body 1A. - The inner space of the
container body 1A is partitioned into the first region SP1 surrounded by the shieldingplate 4, the second region SP2 formed between the lateral surface of thecontainer body 1A and theshielding plate 4, and a third region SP3 formed between a lower end portion of theshielding plate 4 and the bottom of thecontainer body 1A. The first region SP1 and the second region SP2 both connect to the third region SP3. Accordingly, the first region SP1, the second region SP2, and the third region SP3 communicate with each other. Theoutlet 3a is located in the first region SP1, while theinlet 2a is located in the second region SP2. - Two-phase gas-liquid refrigerant flows into the second region SP2 from the
inlet 2a. Gas refrigerant passes through the third region SP3 and flows into the first region SP1. Gas refrigerant flowing into the first region SP1 enters theoutflow pipe 3 from theoutlet 3a and flows out from thecontainer body 1A. Liquid refrigerant passes through the second region SP2 and accumulates in the third region SP3. As the volume of accumulating liquid refrigerant increases, the level of the gas-liquid interface GLI rises. When the volume of accumulating liquid refrigerant exceeds the volume of the third region SP3, the excessive volume of liquid refrigerant accumulates in the first region SP1 and the second region SP2. Consequently, the gas-liquid interface GLI is located in the first region SP1 and the second region SP2. The second region SP2 and the third region SP3 serve as a passage through which refrigerant flowing from theinlet 2a reaches the first region SP1 and theoutlet 3a. - In
Fig. 6 , the shieldingplate 4 is connected to the upper end portion of thecontainer body 1A. However, the shieldingplate 4 may be connected to a lateral surface of thecontainer body 1A. For example, the shieldingplate 4 may be connected to an inner lateral surface of thecontainer body 1A through a hook attached to the inner lateral surface of thecontainer body 1A. - The shielding
plate 4 may be provided with a through hole through which theoutflow pipe 3 passes. When theinflow pipe 2A is inserted from the lateral surface of thecontainer body 1A, theoutflow pipe 3 passes through the through hole and reaches the first region SP1. Accordingly, it is possible to locate theoutlet 3a in the first region SP1. In this case, theinflow pipe 2A may be inserted into the second region SP2 from the upper end portion of thecontainer body 1A, or may be inserted into the second region SP2 from the lateral surface of thecontainer body 1A. - As illustrated in
Fig. 7 , in the configuration of the present embodiment, the shieldingplate 4 separates theinflow pipe 2A from theoutflow pipe 3. With this configuration, liquid refrigerant is prevented from directly flowing into theoutlet 3a from theinlet 2a. Liquid droplets are generated on the gas-liquid interface GLI in the second region SP2 due to ripples of the liquid refrigerant flowing out from theinlet 2a and dropping to the gas-liquid interface GLI. Thus, there is no likelihood that the liquid droplets reach theoutlet 3a located in the first region SP1 partitioned off by the shieldingplate 4. For this reason, in the present embodiment, it is allowable that theinlet 2a and theoutlet 3a are not greatly distanced from each other, or the flow rate of refrigerant flowing into thecontainer body 1A is not decreased. Therefore, as illustrated inFigs. 6 and7 , it is allowable that theinflow pipe 2A does not have thebent portion 2b. - The
refrigerant reservoir container 101A according to the present embodiment includes the shieldingplate 4 provided in thecontainer body 1A. The shieldingplate 4 partitions the interior of thecontainer body 1A into the first region SP1 that is an inner space where theoutlet 3a of theoutflow pipe 3 is located, and the second region SP2 where theinlet 2a of theinflow pipe 2A is located. The third region SP3 is formed between the lower end portion of theshielding plate 4 and the bottom of thecontainer body 1A. The first region SP1 and the second region SP2 connect to the third region SP3. - In this configuration, the
inlet 2a is separated from theoutlet 3a by the shieldingplate 4. Accordingly, it is possible to restrain liquid refrigerant flowing out from theinlet 2a from flowing into theoutlet 3a. Thecontainer body 1A has a cylindrical shape, and thus can reserve an increased volume of liquid refrigerant compared to a container body with a truncated conical shape, provided that the container body with the truncated conical shape and thecontainer body 1A both have the same height and the same cross-sectional area of the bottom. Further, the shieldingplate 4 is provided in thecontainer body 1A with a cylindrical shape. Thus, even when the gas-liquid interface GLI becomes close to theoutlet 3a in distance, the cross-sectional area on the gas-liquid interface GLI near theoutlet 3a is still smaller than the cross-sectional area of the bottom of thecontainer body 1A. Therefore, even when the gas-liquid interface GLI becomes close to theoutlet 3a in distance, ripples are generated still in a small area over the gas-liquid interface GLI. This can reduce the volume of scattering liquid droplets. - In the
refrigerant reservoir container 101A according to the present embodiment, the shieldingplate 4 has a hollow truncated conical shape widening from the upper end portion of thecontainer body 1A towards the bottom, and being open on a top base and a bottom base. The first region SP1 is an inner space surrounded by the shieldingplate 4, while the second region SP2 is a space between the lateral surface of thecontainer body 1A and theshielding plate 4. This configuration can be obtained by solely connecting theshielding plate 4 with a hollow truncated conical shape to thecontainer body 1A with a cylindrical shape, and thus does not complicate the manufacturing process of therefrigerant reservoir container 101A. - A
shielding plate 4A of arefrigerant reservoir container 101B according to the present embodiment is different in configuration from the shieldingplate 4 inEmbodiment 2. Theshielding plate 4A in the present embodiment is described below, mainly focusing on the differences from the shieldingplate 4 inEmbodiment 2. Note that in therefrigeration cycle device 100 inEmbodiment 1, therefrigerant reservoir container 101 according toEmbodiment 1 can be replaced with therefrigerant reservoir container 101B according to the present embodiment. The configuration of therefrigeration cycle device 100, other than the refrigerant reservoir container, is the same as that inEmbodiment 1, and therefore descriptions of the configuration are omitted. The same constituent elements as those inEmbodiments - With reference to
Figs. 8 to 10 , theshielding plate 4A is described below.Fig. 8 is a front view of therefrigerant reservoir container 101B according toEmbodiment 3. The solid-line arrows inFig. 8 conceptually illustrate a refrigerant flow.Fig. 9 is a sectional view illustrating the B-B cross section ofFig. 8 .Fig. 10 is a sectional view illustrating the C-C cross section ofFig. 8 . As illustrated inFigs. 8 and10 , theshielding plate 4A has a plurality of throughholes 6. Each of the throughholes 6 has, for example, a round shape. Each of the throughholes 6 may have an elliptical shape. All of the plurality of throughholes 6 do not necessarily have the same shape or the same size. Note that in thecontainer body 1A in the present embodiment, the B-B cross section illustrated inFig. 8 , in which the throughholes 6 are not provided, is identical to the A-A cross section of thecontainer body 1A illustrated inFig. 6 inEmbodiment 2. Therefore,Figs. 7 and9 illustrate the identical cross-sectional view. - As illustrated in
Fig. 8 , the plurality of throughholes 6 are provided at the same height position in the up-down direction of thecontainer body 1A. As illustrated inFig. 10 , the plurality of throughholes 6 are provided in the circumferential direction of theshielding plate 4A. Note that whileFig. 10 illustrates two throughholes 6, it is sufficient that one or more throughholes 6 are provided. In the up-down direction of thecontainer body 1A, another throughhole 6 may be provided at a different height position in addition to the plurality of throughholes 6 provided at the same height position. - In the
container body 1A, the volume of accumulating liquid refrigerant that exceeds the volume of the third region SP3 accumulates in the first region SP1 and the second region SP2. When the liquid refrigerant accumulates in the first region SP1, the second region SP2, and the third region SP3, the pressure in the second region SP2 is higher than the pressure in the first region SP1. This causes pulsation of the refrigerant between the first region SP1 and the second region SP2. However, since the shieldingplate 4 is provided with the throughholes 6 in the present embodiment, gas refrigerant flows into the first region SP1 from the second region SP2 through the through holes 6. This suppresses an increase in the pressure in the second region SP2. Therefore, pulsation of the refrigerant between the first region SP1 and the second region SP2 is suppressed. - In the
refrigerant reservoir container 101B according to the present embodiment, theshielding plate 4A has the throughholes 6, and the first region SP1 and the second region SP2 communicate with each other through the through holes 6. With this configuration, gas refrigerant flowing into the second region SP2 passes through the throughholes 6 and enters the first region SP1. This reduces variations in the pressure in thecontainer body 1A, and as a consequence, suppresses pulsation of the refrigerant. - In the
refrigerant reservoir container 101B according to the present embodiment, theshielding plate 4A has the plurality of throughholes 6. At least two or more of the plurality of throughholes 6 are provided at the same height position in the up-down direction of thecontainer body 1A. With this configuration, gas refrigerant flows more efficiently from the second region SP2 to the first region SP1, compared to a configuration in which the throughholes 6 are arranged in a line in the up-down direction of thecontainer body 1A. - While
Embodiments 1 to 3 have been described above, therefrigerant reservoir containers refrigeration cycle device 100 are not limited toEmbodiments 1 to 3 described above. Various modifications and applications can be made without departing from the summary of the present disclosure. For example, the refrigerant reservoir container may employ a configuration in which thecontainer body 1 inEmbodiment 1 is provided with the shieldingplate 4 inEmbodiment 2. For another example, the refrigerant reservoir container may employ a configuration in which thecontainer body 1A inEmbodiment 2 is provided with theinflow pipe 2 inEmbodiment 1.Embodiments 1 to 3 can be combined with each other within the range not impairing the functions or structures of each ofEmbodiments 1 to 3. - 1: container body, 1A: container body, 2: inflow pipe, 2A: inflow pipe, 2a: inlet, : 2b: bent portion, 3: outflow pipe, 3a: outlet, 4: shielding plate, 4A: shielding plate, 6: through hole, 10: compressor, 11: flow switching device, 12: outdoor heat exchanger, 13: expansion mechanism, 14: indoor heat exchanger, 15: refrigerant pipe, 100: refrigeration cycle device, 101: refrigerant reservoir container, 101A: refrigerant reservoir container, 101B: refrigerant reservoir container, 200: refrigerant circuit, GLI: gas-liquid interface, VC: virtual container body, HPt1: first height position, HPt2: second height position, HPt3: third height position, L1: first reference line, L2: second reference line, L3: third reference line, XPt1: first point, XPt2: second point, XPt3: third point, XPt4: fourth point, XPt5: fifth point, SP1: first region, SP2: second region, SP3: third region
Claims (7)
- A refrigerant reservoir container, comprising:a container body reserving refrigerant;an inflow pipe inserted into an upper space of the container body, the inflow pipe having an inlet through which the refrigerant flows into the container body; andan outflow pipe inserted into the upper space of the container body, the outflow pipe having an outlet through which the refrigerant flows out from the container body,wherein a cross-sectional area of an inner space of the container body where the outlet of the outflow pipe is located is larger towards a bottom of the container body and away from the outlet.
- The refrigerant reservoir container of claim 1,wherein the inflow pipe and the outflow pipe are inserted from an upper end portion of the container body, andthe inlet of the inflow pipe is located on a lower side relative to the outlet of the outflow pipe.
- The refrigerant reservoir container of claim 1 or 2, comprising a shielding plate provided in the container body,wherein the shielding plate partitions an interior of the container body into a first region being the inner space where the outlet of the outflow pipe is located, and a second region where the inlet of the inflow pipe is located,a third region is formed between a lower end portion of the shielding plate and the bottom of the container body, andthe first region and the second region connect to the third region.
- The refrigerant reservoir container of claim 3,wherein the shielding plate has a hollow truncated conical shape widening from an upper end portion of the container body towards the bottom, and being open on a top base and a bottom base,the first region is an inner space surrounded by the shielding plate, andthe second region is a space between a lateral surface of the container body and the shielding plate.
- The refrigerant reservoir container of claim 3 or 4,wherein the shielding plate has a through hole, andthe first region and the second region communicate with each other through the through hole.
- The refrigerant reservoir container of claim 5,wherein the shielding plate has a plurality of the through holes, andat least two or more of the plurality of the through holes are provided at a same height position in an up-down direction of the container body.
- A refrigeration cycle device comprising:the refrigerant reservoir container of any one of claims 1 to 6; anda compressor connected to the refrigerant reservoir container through the outflow pipe.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2021/027919 WO2023007620A1 (en) | 2021-07-28 | 2021-07-28 | Refrigerant storage container, and refrigeration cycle device provided with said refrigerant storage container |
Publications (1)
Publication Number | Publication Date |
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EP4379291A1 true EP4379291A1 (en) | 2024-06-05 |
Family
ID=85087649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21951826.3A Withdrawn EP4379291A1 (en) | 2021-07-28 | 2021-07-28 | Refrigerant storage container, and refrigeration cycle device provided with said refrigerant storage container |
Country Status (5)
Country | Link |
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US (1) | US20240247846A1 (en) |
EP (1) | EP4379291A1 (en) |
JP (1) | JPWO2023007620A1 (en) |
CN (1) | CN117677809A (en) |
WO (1) | WO2023007620A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60162172A (en) * | 1984-02-02 | 1985-08-23 | 三菱電機株式会社 | Accumulator |
JPH1062037A (en) * | 1996-08-21 | 1998-03-06 | Mitsubishi Electric Corp | Accumulator |
JP2003222445A (en) * | 2002-01-30 | 2003-08-08 | Denso Corp | Gas liquid separator for ejector cycle and oil separator |
JP4897464B2 (en) * | 2006-12-15 | 2012-03-14 | サンデン株式会社 | Vapor compression refrigeration cycle |
JP2008249242A (en) * | 2007-03-30 | 2008-10-16 | Showa Denko Kk | Accumulator for refrigerating cycle |
JP2015172469A (en) | 2014-03-12 | 2015-10-01 | カルソニックカンセイ株式会社 | gas-liquid separator |
-
2021
- 2021-07-28 JP JP2023537820A patent/JPWO2023007620A1/ja active Pending
- 2021-07-28 US US18/564,131 patent/US20240247846A1/en active Pending
- 2021-07-28 CN CN202180100642.7A patent/CN117677809A/en active Pending
- 2021-07-28 EP EP21951826.3A patent/EP4379291A1/en not_active Withdrawn
- 2021-07-28 WO PCT/JP2021/027919 patent/WO2023007620A1/en active Application Filing
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Publication number | Publication date |
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CN117677809A (en) | 2024-03-08 |
WO2023007620A1 (en) | 2023-02-02 |
US20240247846A1 (en) | 2024-07-25 |
JPWO2023007620A1 (en) | 2023-02-02 |
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