WO2023275936A1 - 冷媒分配器、熱交換器及び冷凍サイクル装置 - Google Patents
冷媒分配器、熱交換器及び冷凍サイクル装置 Download PDFInfo
- Publication number
- WO2023275936A1 WO2023275936A1 PCT/JP2021/024368 JP2021024368W WO2023275936A1 WO 2023275936 A1 WO2023275936 A1 WO 2023275936A1 JP 2021024368 W JP2021024368 W JP 2021024368W WO 2023275936 A1 WO2023275936 A1 WO 2023275936A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- refrigerant
- shaped member
- protrusions
- branch
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 217
- 238000005057 refrigeration Methods 0.000 title claims description 13
- 238000004891 communication Methods 0.000 claims description 79
- 238000003780 insertion Methods 0.000 claims description 64
- 230000037431 insertion Effects 0.000 claims description 64
- 238000012546 transfer Methods 0.000 claims description 53
- 239000002826 coolant Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 22
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- 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
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
Definitions
- the present disclosure relates to a refrigerant distributor that distributes refrigerant to a plurality of heat transfer tubes, a heat exchanger that includes the refrigerant distributor, and a refrigeration cycle device that includes the heat exchanger.
- a heat exchanger is provided with a multi-branch refrigerant distributor that distributes and supplies the refrigerant flowing from one inlet channel to multiple paths in order to increase the number of paths.
- the heat exchanger is required to have a compact refrigerant distributor capable of suppressing drift of the refrigerant to each path in order to maintain the heat exchange performance.
- a plate-shaped member having a through-groove for branching the refrigerant into two and a plate-shaped member having a through-hole for circulating the refrigerant in the through-groove are used. Laminated construction is disclosed.
- the plate-shaped member having the through-groove formed thereon is sandwiched between other plate-shaped members in order to establish the through-groove formed in the plate-shaped member as a flow path. Further, in the refrigerant distributor of Patent Document 1, there are two plate-like members formed with only openings into which the flat tubes are inserted in order to secure the insertion space for the flat tubes. As described above, the refrigerant distributor of Patent Document 1 has a large number of plate-like members that do not have a function of distributing the refrigerant, and is large.
- the present disclosure has been made to solve the above problems, and provides a downsized refrigerant distributor, a heat exchanger, and a refrigeration cycle apparatus including the heat exchanger.
- a refrigerant distributor is a refrigerant distributor in which a refrigerant pipe and a plurality of heat transfer pipes are connected, and the refrigerant flowing from the refrigerant pipe is distributed to the plurality of heat transfer pipes by circulating it through a channel formed inside.
- the first plate-shaped member is formed to penetrate in the first direction, and has an inflow path through which the refrigerant flows from the refrigerant pipe, and the refrigerant flowing from the second plate-shaped member side is folded back toward the second plate-shaped member side.
- the second plate member has a plurality of through passages penetrating in the first direction; and the third plate member and the second plate member. a plurality of protrusions protruding in opposite directions, each of the plurality of through passages communicating with one of the inflow passages or the plurality of turn-around passages; A space communicating with the road is formed.
- part of the flow path is formed in the projecting portion of the third plate-shaped member to which the flat tube is connected. Therefore, the refrigerant distributor of the present disclosure is miniaturized by reducing the number of plate members required to form part of the flow path.
- FIG. 1 is a circuit diagram showing refrigeration cycle apparatus 1 according to Embodiment 1.
- FIG. Fig. 2 is a perspective view showing an indoor heat exchanger 7 according to Embodiment 1; 4 is a schematic diagram showing a refrigerant distributor 7b according to Embodiment 1.
- FIG. 2 is a perspective view showing first plate member 10 according to Embodiment 1.
- FIG. 4 is a rear view showing the third plate member 30 according to Embodiment 1.
- FIG. 4 is a perspective view showing a third plate member 30 according to Embodiment 1.
- FIG. FIG. 4 is a cross-sectional view showing a third plate member 30 according to Embodiment 1; 4 is a diagram for explaining a channel according to Embodiment 1;
- FIG. 4 is a diagram for explaining a channel according to Embodiment 1;
- FIG. FIG. 10 is a cross-sectional view showing a third plate member 30A according to Modification 1 of Embodiment 1;
- FIG. 11 is a cross-sectional view showing a third plate member 30B according to Modification 2 of Embodiment 1;
- FIG. 7 is a schematic diagram showing a refrigerant distributor 7Ab according to Embodiment 2;
- FIG. 11 is a perspective view showing a third plate member 30 according to Embodiment 2;
- FIG. 11 is a cross-sectional view showing a third plate member 30 according to Embodiment 2;
- FIG. 10 is a diagram for explaining a channel according to Embodiment 2;
- FIG. 11 is a schematic diagram showing a refrigerant distributor 7Bb according to Embodiment 3;
- FIG. 11 is a perspective view showing a third plate member 30 according to Embodiment 3;
- FIG. 11 is a cross-sectional view showing a third plate member 30 according to Embodiment 3;
- FIG. 11 is a diagram for explaining a flow path according to Embodiment 3;
- FIG. 11 is a schematic diagram showing a refrigerant distributor 7Cb according to Embodiment 4;
- FIG. 11 is a perspective view showing a third plate member 30 according to Embodiment 4;
- FIG. 11 is a cross-sectional view showing a third plate member 30 according to Embodiment 4;
- FIG. 11 is a diagram for explaining a flow path according to Embodiment 4;
- FIG. 11 is a diagram for explaining a flow path according to Embodiment 4;
- Embodiment 1 A refrigeration cycle apparatus 1 including a refrigerant distributor according to Embodiment 1 will be described below with reference to the drawings and the like.
- the same reference numerals denote the same or equivalent parts, and are common throughout the embodiments described below.
- the size relationship of each component may differ from the actual size.
- detailed structures are simplified or omitted as appropriate.
- the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to the forms described in the specification.
- FIG. 1 is a circuit diagram showing a refrigeration cycle device 1 according to Embodiment 1.
- the refrigeration cycle device 1 has an outdoor unit 2 , an indoor unit 3 and refrigerant pipes 4 .
- the outdoor unit 2 has a compressor 5, a channel switching valve 6, an expansion valve 8, an outdoor heat exchanger 9, and an outdoor fan 9a.
- the indoor unit 3 has an indoor heat exchanger 7 and an indoor fan 7a.
- the refrigerant pipe 4 is a pipe that connects the compressor 5, the flow path switching valve 6, the indoor heat exchanger 7, the expansion valve 8, and the outdoor heat exchanger 9, and through which the refrigerant flows.
- the refrigerant pipe 4 and each device connected to the refrigerant pipe 4 constitute a refrigerant circuit.
- the compressor 5 sucks in low-temperature and low-pressure refrigerant, compresses the sucked-in refrigerant, converts it into high-temperature and high-pressure refrigerant, and discharges it.
- the channel switching valve 6 switches the flow direction of the refrigerant in the refrigerant circuit, and is, for example, a four-way valve.
- the expansion valve 8 reduces the pressure of the refrigerant to expand it, and is, for example, an electronic expansion valve.
- the outdoor heat exchanger 9 exchanges heat between refrigerant and outdoor air, and is, for example, a fin-and-tube heat exchanger.
- the outdoor heat exchanger 9 acts as a condenser during cooling operation, and acts as an evaporator during heating operation.
- the outdoor blower 9 a is a device that sends outdoor air to the outdoor heat exchanger 9 .
- the indoor heat exchanger 7 exchanges heat between the indoor air and the refrigerant.
- the indoor heat exchanger 7 acts as an evaporator during cooling operation, and acts as a condenser during heating operation.
- the indoor air blower 7a is a device for sending indoor air to the indoor heat exchanger 7, and is, for example, a cross-flow fan.
- the indoor heat exchanger 7 has a refrigerant distributor 7b.
- the refrigerant distributor 7b is provided on the inflow side through which the liquid-rich refrigerant flows when the indoor heat exchanger 7 functions as an evaporator.
- the outdoor heat exchanger 9 has a refrigerant distributor 9b.
- the refrigerant distributor 9b is provided on the inflow side when the outdoor heat exchanger 9 acts as an evaporator. The description of the refrigerant distributor 7b and the refrigerant distributor 9b will be given later.
- the refrigeration cycle device 1 performs cooling operation by switching the flow path switching valve 6 so that the discharge side of the compressor 5 and the outdoor heat exchanger 9 are connected.
- the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high-temperature and high-pressure gas state.
- the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the outdoor heat exchanger 9 acting as a condenser.
- the refrigerant that has flowed into the outdoor heat exchanger 9 exchanges heat with the outdoor air sent by the outdoor fan 9a, condenses, and liquefies.
- the liquid refrigerant flows into the expansion valve 8 and is decompressed and expanded to become a low-temperature, low-pressure gas-liquid two-phase refrigerant.
- the gas-liquid two-phase refrigerant flows into the indoor heat exchanger 7 acting as an evaporator.
- the refrigerant that has flowed into the indoor heat exchanger 7 exchanges heat with the indoor air sent by the indoor fan 7a, evaporates, and gasifies. At that time, the room air is cooled to cool the room. Thereafter, the vaporized low-temperature, low-pressure gaseous refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5 .
- the refrigeration cycle device 1 performs heating operation by switching the flow path switching valve 6 so that the discharge side of the compressor 5 and the indoor heat exchanger 7 are connected.
- the refrigerant sucked into the compressor 5 is compressed by the compressor 5 and discharged in a high-temperature and high-pressure gas state.
- the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 5 passes through the flow path switching valve 6 and flows into the indoor heat exchanger 7 acting as a condenser.
- the refrigerant that has flowed into the indoor heat exchanger 7 exchanges heat with the indoor air sent by the indoor fan 7a, condenses, and liquefies.
- the room air is warmed, and the room is heated.
- the liquid refrigerant flows into the expansion valve 8 and is decompressed and expanded to become a low-temperature, low-pressure gas-liquid two-phase refrigerant.
- the gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 9 acting as an evaporator.
- the refrigerant that has flowed into the outdoor heat exchanger 9 exchanges heat with the outdoor air sent by the outdoor fan 9a, evaporates, and gasifies. Thereafter, the vaporized low-temperature, low-pressure gaseous refrigerant passes through the flow path switching valve 6 and is sucked into the compressor 5 .
- FIG. 2 is a perspective view showing the indoor heat exchanger 7 according to Embodiment 1.
- FIG. 2 the refrigerant distributor 7b side of the indoor heat exchanger 7 is shown enlarged.
- the indoor heat exchanger 7 includes a refrigerant distributor 7b, multiple heat transfer tubes 50, and a gas header (not shown). As shown in FIG. 2, the refrigerant pipe 4 of the refrigeration cycle device 1 and a plurality of heat transfer tubes 50 are connected to the refrigerant distributor 7b.
- the refrigerant distributor 7 b circulates the refrigerant that has flowed from the refrigerant pipe 4 through channels formed therein, and distributes the refrigerant to the plurality of heat transfer tubes 50 .
- the heat transfer tube 50 is, for example, a flat tube or circular tube in which a plurality of flow paths are formed.
- the heat transfer tubes 50 are made of copper or aluminum, for example.
- the end of the heat transfer tube 50 on the side of the refrigerant distributor 7b is inserted into the refrigerant distributor 7b.
- FIG. 2 shows the case where the number of heat transfer tubes 50 is eight, the number is not limited to this.
- the flow of refrigerant in the indoor heat exchanger 7 according to Embodiment 1 will be described.
- the indoor heat exchanger 7 functions as an evaporator
- the refrigerant flowing through the refrigerant pipes 4 flows into the refrigerant distributor 7 b and is distributed, and then flows out to the plurality of heat transfer tubes 50 .
- the refrigerant exchanges heat with the air or the like supplied by the indoor fan 7a in the plurality of heat transfer tubes 50 .
- the refrigerant flowing through the plurality of heat transfer tubes 50 flows into the gas header, merges, and flows out to the refrigerant pipe 4 .
- the indoor heat exchanger 7 functions as a condenser
- the refrigerant flows in a direction opposite to this flow.
- FIG. 3 is a schematic diagram showing the refrigerant distributor 7b according to the first embodiment.
- FIG. 3 shows a state in which the refrigerant distributors 7b are deployed and arranged.
- the refrigerant distributor 7b is formed by stacking, for example, a rectangular first plate member 10, a second plate member 20, a third plate member 30, and a fourth plate member 40. It is The first plate-like member 10, the second plate-like member 20, the fourth plate-like member 40, and the third plate-like member 30 are arranged in this order in the X-axis direction of FIG. In the following description, the X-axis direction will be referred to as the stacking direction. Note that the stacking direction corresponds to the first direction.
- the width direction of the refrigerant distributor 7b corresponding to the Y-axis direction in FIG. 3 is simply referred to as the width direction.
- the arrangement direction of the plurality of heat transfer tubes 50 corresponding to the Z-axis direction in FIG. 3 is simply referred to as the arrangement direction.
- the first plate-like member 10, the second plate-like member 20, the fourth plate-like member 40, and the third plate-like member 30 are integrally joined by, for example, brazing.
- the first plate-like member 10, the second plate-like member 20, the fourth plate-like member 40, and the third plate-like member 30 are processed by, for example, press working or cutting.
- FIG. 4 is a perspective view showing the first plate member 10 according to Embodiment 1.
- FIG. The viewpoint in FIG. 4 is located on the opposite side of FIG. 3 in the stacking direction.
- the first plate member 10 has two step-spanning protrusions 12a and four step-spanning protrusions 12b.
- the step-spanning projecting portion 12a and the step-spanning projecting portion 12b protrude in the direction opposite to the second plate member 20 in the stacking direction.
- the step-spanning projecting portion 12a is formed so as to straddle two heat transfer tubes 50 inserted into the refrigerant distributor 7b when viewed from the stacking direction.
- the step-spanning projecting portion 12b is formed so as to straddle one heat transfer tube 50 inserted into the refrigerant distributor 7b when viewed from the stacking direction.
- a turn-back flow path 13a is formed inside each of the step-spanning protrusions 12a.
- the return flow path 13 a is a flow path that causes the coolant that has flowed from a through path 21 b of the second plate-shaped member 20 to be described later to flow back to the through path 21 c of the second plate-shaped member 20 .
- a turn-back flow path 13b is formed inside each of the step-spanning protrusions 12b.
- the return flow path 13b is a flow path in which the coolant that has flowed from a through-path 21d of the second plate-shaped member 20 described later is turned back to the through-path 21e of the second plate-shaped member 20 to flow.
- An inflow passage 11 is formed in the first plate member 10 .
- the inflow path 11 is formed through the first plate member 10 in the stacking direction.
- a refrigerant pipe 4 is connected to the first plate member 10 , and an internal space of the refrigerant pipe 4 communicates with an inflow passage 11 .
- the inflow channel 11, the turn-back flow channel 13a, and the turn-back flow channel 13b constitute the flow channel of the refrigerant distributor 7b.
- the second plate-shaped member 20 has a through-passage 21a, two through-passages 21b, two through-passages 21c, four through-passages 21d, and four through-passages 21e formed through in the stacking direction.
- the through passage 21a has a substantially circular shape when viewed from the stacking direction, and is formed substantially in the center of the second plate-shaped member 20 .
- the through passage 21a communicates with the inflow passage 11 of the first plate member 10 and a first communication passage 41a of the fourth plate member 40, which will be described later.
- Each through path 21b has a substantially circular shape when viewed from the stacking direction, and is formed adjacent to the through path 21a in the width direction.
- Each through-passage 21b communicates with the turn-back flow path 13a of the first plate-shaped member 10 and the first communication passage 41b of the fourth plate-shaped member 40, which will be described later.
- Each through-path 21c has a substantially circular shape when viewed in the stacking direction, and is formed at an equal interval from the through-path 21a and substantially at the center in the width direction.
- Each through path 21c communicates with the turn-back flow path 13a of the first plate member 10 and the first communication path 41c of the fourth plate member 40, which will be described later.
- Each through path 21d has a substantially circular shape when viewed from the stacking direction, and is formed adjacent to the through path 21c in the width direction.
- Each of the through passages 21d communicates with the turn-back passage 13b of the first plate-shaped member 10 and the first communication passage 41d of the fourth plate-shaped member 40, which will be described later.
- Each through-passage 21e has a substantially circular shape when viewed from the stacking direction, and the through-passages 21a and two through-passages 21c are alternately formed in the arrangement direction.
- Each through path 21e is formed at regular intervals in the arrangement direction.
- Each of the through passages 21e communicates with the turn-back passage 13b and the second communication passage 42 of the fourth plate member 40, which will be described later.
- the through passages 21a, the two through passages 21b, the two through passages 21c, the four through passages 21d, and the four through passages 21e form flow paths of the refrigerant distributor 7b.
- FIG. 5 is a rear view showing the third plate member 30 according to Embodiment 1.
- FIG. FIG. 6 is a perspective view showing the third plate member 30 according to Embodiment 1.
- FIG. 5 and 6 are located on the opposite side of FIG. 3 in the stacking direction.
- the third plate member 30 has fifteen protrusions 31 that protrude in the opposite direction to the second plate member 20.
- Each protruding portion 31 protrudes substantially perpendicularly from the surface of the third plate-like member 30 opposite to the second plate-like member 20 .
- Insertion openings 32 into which the heat transfer tubes 50 are inserted are formed at respective ends of the eight protrusions 31 among them. Further, as shown in FIG.
- a branch path 34a is formed inside the other projecting portion 31. As shown in FIG. A branch path 34b is formed inside the other two protrusions 31 . Branch paths 34c are formed inside the remaining four protrusions 31 .
- the protruding portions 31 formed with the insertion openings 32 are alternately provided with the protruding portions 31 formed with any of the branched passages 34a, 34b, or 34c.
- the protruding portion 31 having the branched path 34a is provided substantially in the center of the third plate member 30 in the arrangement direction.
- the branch passage 34a communicates the first communication passage 41a and the first communication passage 41b of the fourth plate member 40 with each other.
- Each projecting portion 31 having the branched path 34b is provided at equal intervals from the projecting portion 31 having the branched path 34a in the arrangement direction.
- the branch passage 34b communicates the first communication passage 41c and the first communication passage 41d of the fourth plate member 40 with each other.
- Each protruding portion 31 having a branched path 34c is alternately provided with two protruding portions 31 having a branched path 34a and a branched path 34b in the arrangement direction.
- the protrusions 31 having the branch paths 34c formed thereon are formed at regular intervals in the arrangement direction.
- Each branch path 34c communicates a first communication path 41e and a second communication path 42 of the fourth plate member 40, which will be described later.
- FIG. 7 is a cross-sectional view showing the third plate member 30 according to Embodiment 1.
- FIG. FIG. 7 is a cross section taken along the arrangement direction of the center of the refrigerant distributor 7b in the width direction, that is, from the AA cross section of FIG.
- the projecting portion 31 is shown enlarged.
- an insertion space 33 is formed inside each projection 31 having an insertion opening 32 formed therein.
- the insertion space 33 also includes a space corresponding to the plate thickness of the third plate member 30 .
- the insertion space 33 extends from the surface of the third plate-like member 30 on the side of the second plate-like member 20 to the downstream end surface inside the projecting portion 31 in the stacking direction.
- a tip portion of the corresponding heat transfer tube 50 is positioned in the insertion space 33 .
- the branch path 34a, the branch path 34b, and the branch path 34c also include a space corresponding to the plate thickness of the third plate member 30.
- the branch path 34a, the branch path 34b, and the branch path 34c extend from the surface of the third plate-like member 30 on the side of the second plate-like member 20 to the downstream end surface inside the projecting portion 31 in the stacking direction. It is reaching The insertion space 33, the branch passages 34a, the branch passages 34b, and the branch passages 34c form flow paths of the refrigerant distributor 7b.
- the fourth plate member 40 includes a first communication path 41a, two first communication paths 41b, two first communication paths 41c, four first communication paths 41c, and four first communication paths 41a, 41b, 41b, and 41c. It has one communication path 41 d , four first communication paths 41 e and eight second communication paths 42 .
- the first communication path 41 a has a substantially circular shape when viewed in the stacking direction, and is formed substantially in the center of the second plate member 20 .
- the first communication path 41 a communicates with the through path 21 a of the second plate member 20 and the branch path 34 a of the third plate member 30 . That is, the through passage 21a of the second plate member 20 and the branch passage 34a of the third plate member 30 communicate with each other through the first communication passage 41a.
- Each first communication path 41b has a substantially circular shape when viewed from the stacking direction, and is formed adjacent to the first communication path 41a in the width direction.
- Each first communication path 41 b communicates with the through path 21 b of the second plate member 20 and the branch path 34 a of the third plate member 30 . That is, the through passage 21b of the second plate member 20 and the branch passage 34a of the third plate member 30 communicate with each other through the first communication passage 41b.
- Each of the first communication paths 41c has a substantially circular shape when viewed in the stacking direction, and is formed at equal intervals from the first communication path 41a and substantially at the center in the width direction.
- Each first communication path 41 c communicates with the through path 21 c of the second plate member 20 and the branch path 34 b of the third plate member 30 . That is, the through passage 21c of the second plate member 20 and the branch passage 34b of the third plate member 30 communicate with each other through the first communication passage 41c.
- Each first communication path 41d has a substantially circular shape when viewed from the stacking direction, and is formed adjacent to the first communication path 41c in the width direction.
- Each first communication path 41 d communicates with the through path 21 d of the second plate member 20 and the branch path 34 b of the third plate member 30 . That is, the through passage 21d of the second plate member 20 and the branch passage 34b of the third plate member 30 communicate with each other through the first communication passage 41d.
- Each first communication path 41e has a substantially circular shape when viewed from the stacking direction, and is formed alternately with the first communication path 41a and two first communication paths 41c in the arrangement direction. The respective first communication paths 41e are formed at regular intervals in the arrangement direction.
- Each first communication path 41 e communicates with the through path 21 e of the second plate member 20 and the branch path 34 c of the third plate member 30 . That is, the through passage 21e of the second plate member 20 and the branch passage 34c of the third plate member 30 communicate with each other through the first communication passage 41e.
- Each second communication path 42 is substantially L-shaped when viewed from the stacking direction, and is formed so as to surround the first communication path 41e.
- Each second communication path 42 communicates with the branch path 34 c of the third plate member 30 and the insertion space 33 .
- the branch path 34 c of the third plate-shaped member 30 and the insertion space 33 of the third plate-shaped member 30 communicate with each other via the second communication path 42 . Therefore, the through passage 21e of the second plate member 20 and the insertion space 33 of the third plate member 30 are defined by the first communication passage 41e, the branch passage 34c of the third plate member 30, and the second communication passage 42.
- the first communication passages 41a, the two first communication passages 41b, the two first communication passages 41c, the four first communication passages 41d, the four first communication passages 41e, and the eight second communication passages 42 distribute the refrigerant. It constitutes the flow path of the vessel 7b.
- FIG. 8 is a diagram for explaining a channel according to Embodiment 1.
- FIG. FIG. 9 is a diagram for explaining a channel according to Embodiment 1.
- FIG. The flow path shown in FIG. 9 is a continuation of the flow path shown in FIG.
- the flow path according to Embodiment 1 will be described with reference to FIGS. 8 and 9.
- FIG. Note that all the branches of the flow path are not explained here, and one of the plurality of branches of the flow path is representative until the refrigerant flowing from the refrigerant pipe 4 flows out to one of the heat transfer tubes 50. and explain. First, as shown in FIG.
- the refrigerant that has flowed in from the refrigerant pipe 4 flows through the inflow passage 11 of the first plate-shaped member 10, the through passage 21a of the second plate-shaped member 20, and the first through-hole of the fourth plate-shaped member 40. It goes straight through the communication path 41a and reaches the branch path 34a of the third plate-like member 30 .
- the coolant that has reached the branch passage 34a of the third plate member 30 is split and folded back toward the fourth plate member 40 side.
- One of the branched refrigerants passes through the first communication path 41b of the fourth plate-shaped member 40 and the through-path 21b of the second plate-shaped member 20, and reaches the turn-back flow path 13a of the first plate-shaped member 10. , is folded back toward the second plate member 20 .
- the folded refrigerant passes through the through passage 21c of the second plate-shaped member 20 and the first communication passage 41c of the fourth plate-shaped member 40 to the third plate-shaped member 30. reaches the fork 34b.
- the coolant that has reached the branch path 34b of the third plate-like member 30 is split and folded back toward the fourth plate-like member 40 side.
- One of the branched refrigerants passes through the first communication path 41d of the fourth plate-shaped member 40 and the through-path 21d of the second plate-shaped member 20, and reaches the turn-back flow path 13b of the first plate-shaped member 10. , is folded back toward the second plate member 20 .
- the folded-back refrigerant passes through the through passage 21 e of the second plate-shaped member 20 and the first communication passage 41 e of the fourth plate-shaped member 40 to reach the branch passage 34 c of the third plate-shaped member 30 .
- the coolant that has reached the branch path 34c of the third plate-like member 30 is split and folded back toward the fourth plate-like member 40 side.
- One of the branched refrigerants passes through the second communication passage 42 of the fourth plate-shaped member 40 and is turned back toward the third plate-shaped member 30 .
- the folded refrigerant reaches the insertion space 33 of the third plate member 30 and flows out to one of the heat transfer tubes 50 .
- Embodiment 1 the insertion space 33, the branch passages 34a, the branch passages 34b, and the branch passages 34c, that is, part of the flow passages, are formed in the projecting portion 31 of the third plate member 30 to which the heat transfer tubes 50 are connected. It is Therefore, the refrigerant distributor 7b of Embodiment 1 is miniaturized by eliminating the plate-like member required to form part of the flow path.
- the insertion space 33 is required to have a predetermined width so that the refrigerant does not stagnate in order to allow the refrigerant to smoothly flow out to the heat transfer tubes 50 .
- the insertion space 33 is formed in a plate-like member, it is necessary to increase the thickness or width of the entire plate-like member in order to satisfy the required width.
- the insertion space 33 is formed in the projecting portion 31 of the third plate member. Therefore, when securing the width of the insertion space 33, there is no need to enlarge the portion that does not contribute to the formation of the insertion space 33. FIG. Therefore, the refrigerant distributor 7b of Embodiment 1 can be made smaller.
- the branch passages 34a, 34b, and 34c are also required to have a predetermined width that prevents the refrigerant from stagnation in order to smoothly divide the refrigerant.
- the branch path 34a, the branch path 34b, and the branch path 34c are formed in the projecting portion 31 of the third plate member. Therefore, when securing the width of the branch passages 34a, 34b, and 34c, it is not necessary to enlarge the portions that do not contribute to the formation of the insertion space 33. FIG. Therefore, the refrigerant distributor 7b of Embodiment 1 can be made smaller.
- the refrigerant distributor 7b by reducing the size of the refrigerant distributor 7b, the mounting area of the heat transfer tubes 50 can be secured in the indoor heat exchanger 7, and the heat exchange performance can be improved. Moreover, the refrigerant distributor 7b and the indoor heat exchanger 7 can be made lighter.
- the refrigerant distributor 7b can simplify the manufacturing process and reduce the manufacturing cost by reducing the number of plate-shaped members required to form part of the flow path.
- the turn-back flow paths 13a and turn-back flow paths 13b that is, part of the flow paths are formed in the step-spanning projecting portions 12a and 12b of the first plate member 10, respectively. Therefore, the refrigerant distributor 7b of Embodiment 1 is miniaturized by eliminating the plate-like member required to form part of the flow path.
- the refrigerant that has reciprocated between the first plate-like member 10 and the third plate-like member 30 is 3 It can be circulated to the plate member 30 side.
- the same plate-shaped member can be circulated a plurality of times, so the required number of plate-shaped members is reduced.
- FIG. 10 is a cross-sectional view showing a third plate member 30A according to Modification 1 of Embodiment 1.
- FIG. FIG. 10 is an enlarged view of three projecting portions 31 located on the + side end in the arrangement direction of the third plate member 30A from a cross section corresponding to the AA cross section of FIG. 5 in the third plate member 30A. is shown.
- the inside of each projecting portion 31 is formed in an arc shape on the downstream side.
- the projecting portion 31 is formed so that the dimension in the arrangement direction becomes smaller toward the tip portion. It should be noted that the projecting portion 31 may project substantially perpendicularly from the surface of the third plate-like member 30A opposite to the second plate-like member 20, as in the first embodiment.
- FIG. 11 is a cross-sectional view showing a third plate member 30B according to Modification 2 of Embodiment 1. As shown in FIG. FIG. 11 is an enlarged view of three projecting portions 31 located on the + side end in the arrangement direction of the third plate member 30B from a cross section corresponding to the AA cross section of FIG. 5 in the third plate member 30B.
- the third plate-like member 30B has a tapered portion facing the projecting portion 31 on the surface on the second plate-like member 20 side. Moreover, the projecting portion 31 is formed so that the dimension in the arrangement direction becomes smaller toward the tip portion.
- the tapered shape of the third plate-shaped member 30B suppresses rapid expansion of the flow path just before it flows into the heat transfer tube 50 . Therefore, the pressure loss is reduced, and the heat exchange performance of the indoor heat exchanger 7 can be improved.
- FIG. 12 is a schematic diagram showing a refrigerant distributor 7Ab according to the second embodiment.
- Embodiment 2 differs from Embodiment 1 in that the fourth plate member 40 is omitted and the insertion space 33 of the third plate member 30 and the branch path 34c are formed to communicate with each other.
- the first plate-like member 10 and the second plate-like member 20 have the same shape as the first plate-like member 10 and the second plate-like member 20 of the first embodiment.
- the same reference numerals are given to the parts that are common to the first embodiment, and detailed description thereof will be omitted.
- Each through passage 21 a communicates with the inflow passage 11 of the first plate member 10 and the branch passage 34 a of the third plate member 30 .
- Each through passage 21 b communicates with the return passage 13 a of the first plate member 10 and the branch passage 34 a of the third plate member 30 .
- Each through passage 21 c communicates with the return passage 13 a of the first plate member 10 and the branch passage 34 b of the third plate member 30 .
- Each through passage 21 d communicates with the return passage 13 b of the first plate member 10 and the branch passage 34 b of the third plate member 30 .
- Each through passage 21 e communicates with the turn-back passage 13 b of the first plate member 10 and the branch passage 34 c of the third plate member 30 .
- FIG. 13 is a perspective view showing the third plate member 30 according to Embodiment 2.
- FIG. The viewpoint in FIG. 13 is located on the opposite side of FIG. 12 in the stacking direction.
- the two projecting portions 31 having the insertion space 33 and the projecting portion 31 having the branch path 34c are integrally formed.
- the two insertion spaces 33 and the branch path 34c are in communication.
- FIG. 14 is a cross-sectional view showing the third plate member 30 according to Embodiment 2.
- FIG. 14 is a cross section obtained by cutting the center of the refrigerant distributor 7Ab in the width direction in the arrangement direction, that is, a cross section corresponding to the AA cross section in FIG.
- the three projections 31 located at the side ends are shown enlarged.
- the insertion space 33 and the branch path 34c extend from the surface of the third plate member 30 on the side of the second plate member 20 to the inside of the projecting portion 31 in the stacking direction, as in the first embodiment. It extends to the downstream end face of the .
- the insertion space 33, the branch passage 34a, the branch passage 34b, and the branch passage 34c constitute the flow path of the refrigerant distributor 7Ab.
- FIG. 15 is a diagram for explaining a flow path according to Embodiment 2.
- FIG. A flow path according to Embodiment 2 will be described with reference to FIG. 15 .
- the refrigerant flowing from the refrigerant pipe 4 passes through the inflow passage 11 of the first plate-shaped member 10 and the through passage 21a of the second plate-shaped member 20, and passes through the third plate-shaped member 30. reaches the fork 34a.
- the coolant that has reached the branch path 34a of the third plate-like member 30 is split and folded back toward the second plate-like member 20 side.
- One of the branched refrigerants passes through the through passage 21b of the second plate-shaped member 20, reaches the turn-back flow path 13a of the first plate-shaped member 10, and is turned back toward the second plate-shaped member 20 side.
- the folded refrigerant passes through the through passage 21c of the second plate-shaped member 20 and reaches the branch passage 34b of the third plate-shaped member 30.
- the coolant that has reached the branch path 34b of the third plate-like member 30 is split and folded back toward the second plate-like member 20 side.
- One of the branched refrigerants passes through the through passage 21d of the second plate-shaped member 20, reaches the turn-back flow path 13b of the first plate-shaped member 10, and is turned back toward the second plate-shaped member 20 side.
- the folded refrigerant passes through the through passage 21e of the second plate-shaped member 20 and reaches the branch passage 34c of the third plate-shaped member 30 .
- the coolant that has reached the branch path 34 c of the third plate-like member 30 is branched to the insertion space 33 of the third plate-like member 30 .
- One of the split refrigerant flows out to one of the heat transfer tubes 50 .
- the insertion space 33, the branch passages 34a, the branch passages 34b, and the branch passages 34c, that is, part of the passages are formed in the projecting portion 31 of the third plate member 30 to which the heat transfer tubes 50 are connected. It is Therefore, the refrigerant distributor 7Ab of Embodiment 2 is reduced in size by eliminating the plate-like member required to form part of the flow path.
- the two projecting portions 31 having the insertion space 33 and the projecting portion 31 having the branch path 34c are integrally formed.
- the function of branching the refrigerant is concentrated in the third plate member 30 . Therefore, the refrigerant distributor 7Ab can be made smaller by omitting another plate-like member for dividing the refrigerant.
- FIG. 16 is a schematic diagram showing a refrigerant distributor 7Bb according to the third embodiment.
- the protrusions 31 having the branch paths 34a, 34b, or 34c are omitted, and the insertion spaces 33 are formed inside all the protrusions 31.
- the first plate-like member 10 and the second plate-like member 20 have the same shape as the first plate-like member 10 and the second plate-like member 20 of the first embodiment.
- the same reference numerals are given to the parts that are common to the first embodiment, and detailed description thereof will be omitted.
- Each through passage 21a communicates with the inflow passage 11 of the first plate-shaped member 10 and a first sub-branch passage 43a of the fourth plate-shaped member 40, which will be described later.
- Each through passage 21 b communicates with the turn-back flow path 13 a of the first plate-shaped member 10 and the first sub-branch passage 43 a of the fourth plate-shaped member 40 .
- Each through passage 21c communicates with the turn-back flow path 13a of the first plate member 10 and the first sub-branch passage 43b of the fourth plate member 40, which will be described later.
- Each through passage 21 d communicates with the turn-back passage 13 b of the first plate member 10 and the first sub-branch passage 43 b of the fourth plate member 40 .
- Each through passage 21e communicates with the turn-back flow path 13b of the first plate-like member 10 and the second sub-branch passage 44 of the fourth plate-like member 40, which will be described later.
- FIG. 17 is a perspective view showing the third plate member 30 according to Embodiment 3.
- FIG. The viewpoint in FIG. 17 is located on the opposite side in the stacking direction from that in FIG.
- the third plate-like member 30 has eight protrusions 31 that protrude in the opposite direction to the second plate-like member 20 . Insertion openings 32 into which the heat transfer tubes 50 are inserted are formed at the ends of the eight protrusions 31 .
- FIG. 18 is a cross-sectional view showing the third plate member 30 according to Embodiment 3.
- FIG. 18 is a cross section obtained by cutting the center of the refrigerant distributor 7Bb in the width direction in the arrangement direction, that is, a cross section corresponding to the AA cross section in FIG.
- the two projections 31 located at the side ends are shown enlarged.
- an insertion space 33 is formed inside each protrusion 31 having an insertion opening 32 formed therein.
- the insertion space 33 also includes a space corresponding to the plate thickness of the third plate member 30 .
- the insertion space 33 extends from the surface of the third plate-like member 30 on the side of the second plate-like member 20 to the downstream end surface inside the projecting portion 31 in the stacking direction.
- a tip portion of the corresponding heat transfer tube 50 is positioned in the insertion space 33 .
- the inside of the projecting portion 31 is formed in an arc shape on the downstream side.
- the projecting portion 31 is formed so that the dimension in the arrangement direction becomes smaller toward the end portion.
- the insertion space 33 constitutes the flow path of the refrigerant distributor 7Bb.
- the fourth plate member 40 includes a first sub-branch path 43a, two second sub-branch paths 44, and four second sub-branch paths 44, which are formed to penetrate in the stacking direction.
- the first sub-branch path 43 a has a linear shape when viewed from the stacking direction, and is formed substantially in the center of the second plate member 20 .
- the first secondary branch passage 43 a communicates with the through passage 21 a of the second plate member 20 and the two through passages 21 b of the second plate member 20 .
- Each of the first sub-branch paths 43b has a linear shape when viewed from the stacking direction, and is formed at positions equidistant from the first sub-branch paths 43a.
- Each first sub-branch passage 43 b communicates with the through passage 21 c of the second plate member 20 and the two through passages 21 d of the second plate member 20 .
- Each of the second sub-branch paths 44 has a substantially S-shape when viewed from the - side to the + side in the stacking direction. formed alternately.
- the respective second sub-branch paths 44 are formed at regular intervals in the arrangement direction.
- Each of the second sub-branch paths 44 communicates with the through path 21 e of the second plate-shaped member 20 and the two insertion spaces 33 of the third plate-shaped member 30 .
- the first sub-branch passage 43a, the two second sub-branch passages 44, and the four second sub-branch passages 44 constitute the flow path of the refrigerant distributor 7Bb.
- FIG. 19 is a diagram for explaining a channel according to Embodiment 3.
- the refrigerant flowing from the refrigerant pipe 4 passes through the inflow passage 11 of the first plate-shaped member 10 and the through passage 21a of the second plate-shaped member 20 to the fourth plate-shaped member 40. reaches the first sub-branch 43a.
- the refrigerant reaching the first sub-branch passage 43a of the fourth plate-shaped member 40 is branched and folded back toward the second plate-shaped member 20 side.
- One of the branched refrigerants passes through the through passage 21b of the second plate-shaped member 20, reaches the turn-back flow path 13a of the first plate-shaped member 10, and is turned back toward the second plate-shaped member 20 side.
- the folded refrigerant passes through the through passage 21 c of the second plate-shaped member 20 and reaches the first sub-branch passage 43 b of the fourth plate-shaped member 40 .
- the refrigerant reaching the first sub-branch passage 43b of the fourth plate-shaped member 40 is split and folded back toward the second plate-shaped member 20 side.
- One of the branched refrigerants passes through the through passage 21d of the second plate-shaped member 20, reaches the turn-back flow path 13b of the first plate-shaped member 10, and is turned back toward the second plate-shaped member 20 side.
- the folded refrigerant passes through the through passage 21e of the second plate-shaped member 20 and reaches the second sub-branch passage 44 of the fourth plate-shaped member 40 .
- the coolant that has reached the second sub-branch passage 44 of the fourth plate-like member 40 is divided into two insertion spaces 33 of the third plate-like member 30 .
- One of the split refrigerant flows out to one of the heat transfer tubes 50 .
- the insertion space 33 that is, part of the flow path is formed in the projecting portion 31 of the third plate member 30 to which the heat transfer tube 50 is connected. Therefore, in the third embodiment as well, the refrigerant distributor 7Bb is reduced in size by eliminating the plate-like member required to form part of the flow path.
- FIG. 20 is a schematic diagram showing a refrigerant distributor 7Cb according to the fourth embodiment.
- the protruding portion 31 having the insertion space 33 formed therein is omitted, and all the protruding portions 31 have a branch passage 34a, a branch passage 34b, or a branch passage 34c. is formed, which is different from the first embodiment.
- the first plate-like member 10, the second plate-like member 20 and the fourth plate-like member 40 are the same as the first plate-like member 10, the second plate-like member 20 and the fourth plate-like member 40 of the first embodiment. Shape.
- the same reference numerals are given to the parts that are common to the first embodiment, and detailed description thereof will be omitted.
- FIG. 21 is a perspective view showing the third plate member 30 according to Embodiment 4.
- FIG. The viewpoint in FIG. 21 is located on the opposite side in the stacking direction from that in FIG.
- the third plate member 30 has seven projecting portions 31 projecting in the direction opposite to the direction of the second plate member 20 .
- a branch path 34a is formed inside one protrusion 31 among them.
- a branch path 34b is formed inside the other two protrusions 31 .
- Branch paths 34c are formed inside the remaining four protrusions 31 .
- Eight insertion openings 32 are formed alternately with the protruding portions 31 in which any of the branched passages 34a, 34b, and 34c are formed.
- the formation positions of the protruding portions 31 in which the branch passages 34a, 34b, or 34c are formed are the same as in the first embodiment. Further, the flow path from the inflow path 11 of the first plate-like member 10 to the second communication path 42 of the fourth plate-like member 40 is also the same as in the first embodiment. Also in Embodiment 4, the branch passage 34a, the branch passage 34b, and the branch passage 34c constitute the flow path of the refrigerant distributor 7Cb.
- the insertion opening 32 is formed in the planar portion of the third plate-shaped member 30 . Therefore, the second communication path 42 of the fourth plate member 40 communicates with the branch path 34 c of the third plate member 30 and the insertion opening 32 of the third plate member 30 .
- FIG. 22 is a cross-sectional view showing the third plate member 30 according to Embodiment 4.
- FIG. 22 is a cross section obtained by cutting the center of the refrigerant distributor 7Cb in the width direction in the arrangement direction, that is, a cross section corresponding to the AA cross section in FIG.
- the three projections 31 located at the side ends are shown enlarged.
- the inside of the projecting portion 31 is formed in an arc shape on the downstream side.
- the projecting portion 31 is formed so that the dimension in the arrangement direction becomes smaller toward the end portion.
- the fourth plate member 40 is omitted in FIG. 22, the tip of the heat transfer tube 50 inserted into the refrigerant distributor 7Cb passes through the insertion opening 32 and is positioned in the second communication path 42. .
- FIG. 23 is a diagram for explaining a channel according to Embodiment 4.
- FIG. FIG. 24 is a diagram for explaining a channel according to Embodiment 1.
- FIG. The flow path shown in FIG. 24 is a continuation of the flow path shown in FIG. A channel according to Embodiment 4 will be described with reference to FIGS. 23 and 24.
- FIG. 24 the flow path from the inflow path 11 of the first plate-like member 10 to the second communication path 42 of the fourth plate-like member 40 is the same as in Embodiment 1, and therefore will be omitted.
- the refrigerant that has passed through the second communication passage 42 of the fourth plate member 40 flows out to one of the heat transfer tubes 50 inserted into the insertion opening 32 .
- the branch passages 34a, 34b, and 34c that is, part of the flow passages, are formed in the projecting portion 31 of the third plate member 30 to which the heat transfer tubes 50 are connected. Therefore, in the fourth embodiment as well, the refrigerant distributor 7Cb is reduced in size by eliminating the plate-like member necessary for forming part of the flow path.
- the indoor heat exchanger 7 or the outdoor heat exchanger 9 may have multiple fins joined to the heat transfer tubes 50 .
- the fins are made of aluminum, for example.
- the number of branches is not limited to this, and the number of branches can be changed by changing the number of branched paths. .
- the turn-back flow path 13a is provided inside the step-spanning protrusion 12a, and the turn-back flow path 13b is provided inside the step-straddling protrusion 12b.
- the turn-back channel 13a and the turn-back channel 13b may be formed as grooves penetrating the first plate-shaped member 10 and blocked by another plate-shaped member to form a channel.
- the turn-back flow path 13 a and turn-up flow path 13 b may be formed as grooves having a depth less than the plate thickness of the first plate member 10 . Even in these cases, the size of the refrigerant distributor 7b can be reduced if a part of the flow path is formed in the projecting portion 31 of the third plate member 30 .
- the modification 1 of the first embodiment may be combined to form the inside of the protruding portion 31 so that the downstream side has an arc shape.
- the surface on the side of the second plate-like member 20 may be tapered.
Abstract
Description
以下、実施の形態1に係る冷媒分配器を備える冷凍サイクル装置1について、図面等を参照しながら説明する。以下の説明において、同一の符号を付したものは、同一またはこれに相当するものであり、以下に記載する実施の形態の全文において共通することとする。さらに、図面では、各構成部材の大きさの関係が実際のものと異なる場合がある。また、細かい構造については、適宜図示を簡略化または省略する。そして、明細書全文に表されている構成要素の形態は、あくまでも例示であって、明細書に記載された形態に限定するものではない。
ここで、冷凍サイクル装置1の動作について説明する。先ず、冷房運転について説明する。冷凍サイクル装置1は、圧縮機5の吐出側と室外熱交換器9とが接続されるように流路切替弁6を切り替えることで、冷房運転を行う。冷房運転において、圧縮機5に吸入された冷媒は、圧縮機5によって圧縮されて高温且つ高圧のガス状態で吐出される。圧縮機5から吐出された高温且つ高圧のガス状態の冷媒は、流路切替弁6を通過して、凝縮器として作用する室外熱交換器9に流入する。室外熱交換器9に流入した冷媒は、室外送風機9aによって送られる室外空気と熱交換されて凝縮し、液化する。液状態の冷媒は、膨張弁8に流入し、減圧及び膨張されて、低温且つ低圧の気液二相状態の冷媒となる。気液二相状態の冷媒は、蒸発器として作用する室内熱交換器7に流入する。室内熱交換器7に流入した冷媒は、室内送風機7aによって送られる室内空気と熱交換されて蒸発し、ガス化する。その際、室内空気が冷却されて室内における冷房が実施される。その後、蒸発した低温且つ低圧のガス状態の冷媒は、流路切替弁6を通過して、圧縮機5に吸入される。
次に、暖房運転について説明する。冷凍サイクル装置1は、圧縮機5の吐出側と室内熱交換器7とが接続されるように流路切替弁6を切り替えることで、暖房運転を行う。暖房運転において、圧縮機5に吸入された冷媒は、圧縮機5によって圧縮されて高温且つ高圧のガス状態で吐出される。圧縮機5から吐出された高温且つ高圧のガス状態の冷媒は、流路切替弁6を通過して、凝縮器として作用する室内熱交換器7に流入する。室内熱交換器7に流入した冷媒は、室内送風機7aによって送られる室内空気と熱交換されて凝縮し、液化する。その際、室内空気が温められて、室内における暖房が実施される。液状態の冷媒は、膨張弁8に流入し、減圧及び膨張されて、低温且つ低圧の気液二相状態の冷媒となる。気液二相状態の冷媒は、蒸発器として作用する室外熱交換器9に流入する。室外熱交換器9に流入した冷媒は、室外送風機9aによって送られる室外空気と熱交換されて蒸発し、ガス化する。その後、蒸発した低温且つ低圧のガス状態の冷媒は、流路切替弁6を通過して、圧縮機5に吸入される。
以下では、室内熱交換器7を例にして、熱交換器の構成を説明する。室外熱交換器9及び室外熱交換器9の冷媒分配器9bは、室内熱交換器7及び室内熱交換器7の冷媒分配器9bと同様の構成であるため、説明を省略する。なお、本開示の内容は、室内熱交換器7及び冷媒分配器9bと室外熱交換器9及び冷媒分配器9bの何れか一方にのみ適用されていてもよい。図2は、実施の形態1に係る室内熱交換器7を示す斜視図である。図2では、室内熱交換器7の冷媒分配器7b側を拡大して示している。室内熱交換器7は、冷媒分配器7b、複数の伝熱管50、及びガスヘッダ(図示せず)を備えている。図2に示すように、冷媒分配器7bには、冷凍サイクル装置1の冷媒配管4と複数の伝熱管50が接続される。冷媒分配器7bは、冷媒配管4から流入した冷媒を内部に形成された流路に流通させて、複数の伝熱管50に分配する。
図3は、実施の形態1に係る冷媒分配器7bを示す概略図である。図3では、冷媒分配器7bを展開して並べた状態が示されている。図3に示すように、冷媒分配器7bは、例えば矩形形状の第1板状部材10、第2板状部材20、第3板状部材30、及び第4板状部材40が積層されて形成されている。第1板状部材10、第2板状部材20、第4板状部材40、及び第3板状部材30は、図3のX軸方向において、この順番に並んで配置されている。以下の説明では、X軸方向を積層方向と称する。なお、積層方向は、第1方向に相当する。また、図3のY軸方向に相当する冷媒分配器7bの幅方向を、単に幅方向と称する。図3のZ軸方向に相当する複数の伝熱管50の配列方向を、単に配列方向と称する。第1板状部材10、第2板状部材20、第4板状部材40、及び第3板状部材30は、例えば、ろう付けにより一体に接合される。第1板状部材10、第2板状部材20、第4板状部材40、及び第3板状部材30は、例えば、プレス加工、又は切削加工等によって加工される。
図8は、実施の形態1に係る流路を説明するための図である。図9は、実施の形態1に係る流路を説明するための図である。図9で示す流路は、図8で示す流路の続きである。図8及び図9を用いて、実施の形態1に係る流路について説明する。なお、ここでは、流路の全ての分岐は説明せず、流路の複数の分岐のうち、冷媒配管4から流入した冷媒が、伝熱管50の1つに流出されるまでの1つを代表して説明する。先ず、図8に示すように、冷媒配管4から流入した冷媒は、第1板状部材10の流入路11、第2板状部材20の貫通路21a、及び第4板状部材40の第1連通路41aを直進して、第3板状部材30の分岐路34aに到達する。第3板状部材30の分岐路34aに到達した冷媒は、分流され、第4板状部材40側に折り返される。分流された一方の冷媒は、第4板状部材40の第1連通路41b、及び第2板状部材20の貫通路21bを通って、第1板状部材10の折り返し流路13aに到達し、第2板状部材20側に折り返される。
図10は、実施の形態1の変形例1に係る第3板状部材30Aを示す断面図である。図10は、第3板状部材30Aにおいて、図5のA-A断面に相当する断面から第3板状部材30Aの配列方向における+側の端部に位置する3つの突出部31を拡大して示している。図10に示すように、それぞれの突出部31の内部は、下流側が円弧形状に形成されている。また、突出部31は、先端部に向かって、配列方向の寸法が小さくなるように形成されている。なお、突出部31は、実施の形態1と同様に、第3板状部材30Aにおける第2板状部材20と反対側の面から略垂直に突出するものであってもよい。
(変形例2)
図11は、実施の形態1の変形例2に係る第3板状部材30Bを示す断面図である。図11は、第3板状部材30Bにおいて、図5のA-A断面に相当する断面から第3板状部材30Bの配列方向における+側の端部に位置する3つの突出部31を拡大して示している。図11に示すように、第3板状部材30Bは、第2板状部材20側の面において、突出部31に対向する部分がテーパー形状に形成されている。また、突出部31は、先端部に向かって、配列方向の寸法が小さくなるように形成されている。
図12は、実施の形態2に係る冷媒分配器7Abを示す概略図である。実施の形態2は、第4板状部材40が省略され、第3板状部材30の挿入空間33と分岐路34cとが連通するように形成されている点で、実施の形態1と相違する。第1板状部材10及び第2板状部材20は、実施の形態1の第1板状部材10及び第2板状部材20と同一の形状である。なお、以下の説明において、実施の形態1と共通する部分には同一の符号を付し、詳細な説明を省略する。
図15は、実施の形態2に係る流路を説明するための図である。図15を用いて、実施の形態2に係る流路について説明する。なお、ここでは、流路の全ての分岐は説明せず、流路の複数の分岐のうち、冷媒配管4から流入した冷媒が、伝熱管50の1つに流出されるまでの1つを代表して説明する。先ず、図15に示すように、冷媒配管4から流入した冷媒は、第1板状部材10の流入路11、及び第2板状部材20の貫通路21aを通って、第3板状部材30の分岐路34aに到達する。第3板状部材30の分岐路34aに到達した冷媒は、分流され、第2板状部材20側に折り返される。分流された一方の冷媒は、第2板状部材20の貫通路21bを通って、第1板状部材10の折り返し流路13aに到達し、第2板状部材20側に折り返される。
図16は、実施の形態3に係る冷媒分配器7Bbを示す概略図である。図16に示すように、実施の形態3は、分岐路34a、分岐路34b、又は分岐路34cが形成された突出部31が省略され、全ての突出部31の内部に挿入空間33が形成されている点で、実施の形態1と相違する。第1板状部材10及び第2板状部材20は、実施の形態1の第1板状部材10及び第2板状部材20と同一の形状である。なお、以下の説明において、実施の形態1と共通する部分には同一の符号を付し、詳細な説明を省略する。
図19は、実施の形態3に係る流路を説明するための図である。なお、ここでは、流路の全ての分岐は説明せず、流路の複数の分岐のうち、冷媒配管4から流入した冷媒が、伝熱管50の1つに流出されるまでの1つを代表して説明する。先ず、図19に示すように、冷媒配管4から流入した冷媒は、第1板状部材10の流入路11、及び第2板状部材20の貫通路21aを通って、第4板状部材40の第1副分岐路43aに到達する。第4板状部材40の第1副分岐路43aに到達した冷媒は、分流され、第2板状部材20側に折り返される。分流された一方の冷媒は、第2板状部材20の貫通路21bを通って、第1板状部材10の折り返し流路13aに到達し、第2板状部材20側に折り返される。
図20は、実施の形態4に係る冷媒分配器7Cbを示す概略図である。図20に示すように、実施の形態4は、挿入空間33が形成された突出部31が省略され、全ての突出部31の内部に分岐路34a、分岐路34b、又は分岐路34cの何れかが形成されている点で、実施の形態1と相違する。第1板状部材10、第2板状部材20及び第4板状部材40は、実施の形態1の第1板状部材10、第2板状部材20及び第4板状部材40と同一の形状である。なお、以下の説明において、実施の形態1と共通する部分には同一の符号を付し、詳細な説明を省略する。
図23は、実施の形態4に係る流路を説明するための図である。図24は、実施の形態1に係る流路を説明するための図である。図24で示す流路は、図23で示す流路の続きである。図23及び図24を用いて、実施の形態4に係る流路について説明する。上述したように、第1板状部材10の流入路11から第4板状部材40の第2連通路42までの流路については、実施の形態1と同様であるため、省略する。図24で示すように、第4板状部材40の第2連通路42を通った冷媒は、挿入開口32に挿入された伝熱管50の1つに流出する。
Claims (10)
- 冷媒配管と複数の伝熱管とが接続され、前記冷媒配管から流入した冷媒を内部に形成された流路に流通させて、前記複数の伝熱管に分配する冷媒分配器であって、
第1方向に並んで設けられた、前記冷媒配管が接続される第1板状部材と、第2板状部材と、前記複数の伝熱管が接続される第3板状部材と、を備え、
前記第1板状部材は、
前記第1方向に貫通して形成され、前記冷媒配管から冷媒が流入する流入路と、
前記第2板状部材側から流れた冷媒を前記第2板状部材側に折り返して流す複数の折り返し流路と、を有し、
前記第2板状部材は、
前記第1方向に貫通して形成された複数の貫通路を有し、
前記第3板状部材は、
前記第2板状部材と反対の方向に突出する複数の突出部を有し、
前記複数の貫通路のそれぞれは、前記流入路又は前記複数の折り返し流路の1つと連通し、
前記複数の突出部のそれぞれの内部には、前記複数の貫通路に連通する空間が形成されている
冷媒分配器。 - 前記第2板状部材と前記第3板状部材との間に設けられた第4板状部材を更に備え、
前記複数の突出部のうち、少なくとも2つの突出部のそれぞれには、前記複数の伝熱管のうちの1つが挿入される挿入開口が形成され、
前記複数の突出部のうち、前記挿入開口が形成された前記少なくとも2つの突出部のそれぞれの内部に形成された前記空間は、前記複数の伝熱管のうちの1つの先端部が位置する挿入空間であり、前記挿入空間が形成された前記少なくとも2つの突出部を除いた突出部の内部に形成された前記空間は、前記複数の貫通路のうちの1つから流入した冷媒を分流させる分岐路であり、
前記第4板状部材は、
前記第1方向に貫通して形成された、複数の第1連通路と、複数の第2連通路と、を有し、
前記複数の第1連通路のそれぞれは、前記複数の貫通路のうちの1つと、前記複数の分岐路のうちの1つとを連通させ、
前記複数の第2連通路のそれぞれは、前記複数の分岐路のうちの1つと、前記挿入空間とを連通させる
請求項1に記載の冷媒分配器。 - 前記複数の突出部のうち、少なくとも2つの突出部のそれぞれには、前記複数の伝熱管のうちの1つが挿入される挿入開口が形成され、
前記複数の突出部のうち、前記挿入開口が形成された前記少なくとも2つの突出部のそれぞれの内部に形成された前記空間は、前記複数の伝熱管のうちの1つの先端部が位置する挿入空間であり、前記挿入空間が形成された前記少なくとも2つの突出部を除いた突出部の内部に形成された前記空間は、前記複数の貫通路のうちの1つから流入した冷媒を分流させる分岐路であり、
前記複数の突出部のうち、前記挿入空間が形成された前記少なくとも2つの突出部と、前記分岐路が形成された前記突出部とが一体的に形成され、少なくとも2つの前記挿入空間と前記分岐路とが連通している
請求項1に記載の冷媒分配器。 - 前記第2板状部材と前記第3板状部材との間に設けられた第4板状部材を更に備え、
前記複数の突出部のそれぞれには、前記複数の伝熱管のうちの1つが挿入される挿入開口が形成され、
前記複数の突出部のそれぞれの内部に形成された前記空間は、前記複数の伝熱管のうちの1つの先端部が位置する挿入空間であり、
前記第4板状部材は、
前記第1方向に貫通して形成された、複数の第1副分岐路と、複数の第2副分岐路と、を有し、
前記複数の第1副分岐路のそれぞれは、前記複数の貫通路のうちの1つと、当該貫通路とは異なる別の2つの貫通路とを連通させ、
前記複数の第2副分岐路のそれぞれは、前記複数の貫通路のうちの1つと、2つの前記挿入空間とを連通させる
請求項1に記載の冷媒分配器。 - 前記第2板状部材と前記第3板状部材との間に設けられた第4板状部材を更に備え、
前記複数の突出部のそれぞれの内部に形成された前記空間は、前記複数の貫通路のうちの1つから流入した冷媒を分流させる分岐路であり、
前記第3板状部材は、
前記第1方向に貫通して形成された、複数の挿入開口を有し、
前記複数の挿入開口のそれぞれには、前記複数の伝熱管のうちの1つが挿入され、
前記第4板状部材は、
前記第1方向に貫通して形成された、複数の第1連通路と、複数の第2連通路と、を有し、
前記複数の第1連通路のそれぞれは、前記複数の貫通路のうちの1つと、前記複数の分岐路のうちの1つとを連通させ、
前記複数の第2連通路のそれぞれは、前記複数の分岐路のうちの1つと、前記複数の挿入開口のうちの1つとを連通させる
請求項1に記載の冷媒分配器。 - 前記複数の突出部のそれぞれの内部は、下流側が円弧形状に形成されている
請求項1~5の何れか1項に記載の冷媒分配器。 - 前記第3板状部材は、前記第2板状部材側の面において、前記複数の突出部に対向する部分がテーパー形状に形成されている
請求項1~6の何れか1項に記載の冷媒分配器。 - 前記第1板状部材は、
前記第2板状部材と反対の方向に突出する複数の段跨ぎ突出部を有し、
前記複数の段跨ぎ突出部は、
前記第1方向から見た際に、前記複数の伝熱管の少なくとも1つを跨ぐように形成され、前記複数の段跨ぎ突出部のそれぞれの内部には、前記折り返し流路が形成されている
請求項1~7の何れか1項に記載の冷媒分配器。 - 請求項1~8の何れか1項に記載の冷媒分配器と、
前記冷媒分配器に挿入される複数の伝熱管と、を備える
熱交換器。 - 請求項9に記載の熱交換器を備えた冷凍サイクル装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180099717.4A CN117545971A (zh) | 2021-06-28 | 2021-06-28 | 制冷剂分配器、热交换器和制冷循环装置 |
PCT/JP2021/024368 WO2023275936A1 (ja) | 2021-06-28 | 2021-06-28 | 冷媒分配器、熱交換器及び冷凍サイクル装置 |
EP21948248.6A EP4365511A1 (en) | 2021-06-28 | 2021-06-28 | Refrigerant distributor, heat exchanger, and refrigeration cycle device |
JP2023531153A JP7486671B2 (ja) | 2021-06-28 | 冷媒分配器、熱交換器及び冷凍サイクル装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2021/024368 WO2023275936A1 (ja) | 2021-06-28 | 2021-06-28 | 冷媒分配器、熱交換器及び冷凍サイクル装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023275936A1 true WO2023275936A1 (ja) | 2023-01-05 |
Family
ID=84689791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/024368 WO2023275936A1 (ja) | 2021-06-28 | 2021-06-28 | 冷媒分配器、熱交換器及び冷凍サイクル装置 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4365511A1 (ja) |
CN (1) | CN117545971A (ja) |
WO (1) | WO2023275936A1 (ja) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0894285A (ja) * | 1994-09-29 | 1996-04-12 | Zexel Corp | 熱交換器 |
JPH11118295A (ja) * | 1997-10-17 | 1999-04-30 | Hitachi Ltd | プレート型分流器およびその製造方法 |
WO2014184913A1 (ja) * | 2013-05-15 | 2014-11-20 | 三菱電機株式会社 | 積層型ヘッダー、熱交換器、及び、空気調和装置 |
WO2016071946A1 (ja) * | 2014-11-04 | 2016-05-12 | 三菱電機株式会社 | 積層型ヘッダ、熱交換器、及び、空気調和装置 |
WO2017103965A1 (ja) * | 2015-12-14 | 2017-06-22 | 三菱電機株式会社 | 分配器、熱交換器、空気調和装置、及び、分配器の製造方法 |
WO2019073610A1 (ja) * | 2017-10-13 | 2019-04-18 | 三菱電機株式会社 | 積層型ヘッダー、熱交換器、及び、冷凍サイクル装置 |
WO2020090015A1 (ja) * | 2018-10-30 | 2020-05-07 | 三菱電機株式会社 | 冷媒分配器、熱交換器および空気調和装置 |
JP6782792B2 (ja) | 2016-12-21 | 2020-11-11 | 三菱電機株式会社 | 分配器、熱交換器、及び、冷凍サイクル装置 |
WO2020262699A1 (ja) * | 2019-06-28 | 2020-12-30 | ダイキン工業株式会社 | 熱交換器およびヒートポンプ装置 |
-
2021
- 2021-06-28 WO PCT/JP2021/024368 patent/WO2023275936A1/ja active Application Filing
- 2021-06-28 EP EP21948248.6A patent/EP4365511A1/en active Pending
- 2021-06-28 CN CN202180099717.4A patent/CN117545971A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0894285A (ja) * | 1994-09-29 | 1996-04-12 | Zexel Corp | 熱交換器 |
JPH11118295A (ja) * | 1997-10-17 | 1999-04-30 | Hitachi Ltd | プレート型分流器およびその製造方法 |
WO2014184913A1 (ja) * | 2013-05-15 | 2014-11-20 | 三菱電機株式会社 | 積層型ヘッダー、熱交換器、及び、空気調和装置 |
WO2016071946A1 (ja) * | 2014-11-04 | 2016-05-12 | 三菱電機株式会社 | 積層型ヘッダ、熱交換器、及び、空気調和装置 |
WO2017103965A1 (ja) * | 2015-12-14 | 2017-06-22 | 三菱電機株式会社 | 分配器、熱交換器、空気調和装置、及び、分配器の製造方法 |
JP6782792B2 (ja) | 2016-12-21 | 2020-11-11 | 三菱電機株式会社 | 分配器、熱交換器、及び、冷凍サイクル装置 |
WO2019073610A1 (ja) * | 2017-10-13 | 2019-04-18 | 三菱電機株式会社 | 積層型ヘッダー、熱交換器、及び、冷凍サイクル装置 |
WO2020090015A1 (ja) * | 2018-10-30 | 2020-05-07 | 三菱電機株式会社 | 冷媒分配器、熱交換器および空気調和装置 |
WO2020262699A1 (ja) * | 2019-06-28 | 2020-12-30 | ダイキン工業株式会社 | 熱交換器およびヒートポンプ装置 |
Also Published As
Publication number | Publication date |
---|---|
CN117545971A (zh) | 2024-02-09 |
JPWO2023275936A1 (ja) | 2023-01-05 |
EP4365511A1 (en) | 2024-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2005326711B2 (en) | Parallel flow heat exchangers incorporating porous inserts | |
US8235101B2 (en) | Parallel flow heat exchanger for heat pump applications | |
JP6012857B2 (ja) | 積層型ヘッダー、熱交換器、及び、空気調和装置 | |
JP6116683B2 (ja) | 積層型ヘッダー、熱交換器、及び、空気調和装置 | |
WO2013160954A1 (ja) | 熱交換器及びこの熱交換器を備えた冷凍サイクル装置 | |
CN109844439B (zh) | 热交换器和使用该热交换器的制冷系统 | |
WO2018189892A1 (ja) | 分配器、熱交換器、及び、冷凍サイクル装置 | |
WO2018116413A1 (ja) | 分配器、熱交換器、及び、冷凍サイクル装置 | |
CN109564070B (zh) | 热交换器和使用它的制冷系统 | |
JPWO2015004719A1 (ja) | 積層型ヘッダー、熱交換器、空気調和装置、及び、積層型ヘッダーの板状体と管とを接合する方法 | |
JP6005268B2 (ja) | 積層型ヘッダー、熱交換器、及び、空気調和装置 | |
EP3088831A1 (en) | Stacked header, heat exchanger, and air conditioner | |
JPWO2019087235A1 (ja) | 冷媒分配器および冷凍サイクル装置 | |
WO2023275936A1 (ja) | 冷媒分配器、熱交換器及び冷凍サイクル装置 | |
JP7486671B2 (ja) | 冷媒分配器、熱交換器及び冷凍サイクル装置 | |
WO2020090015A1 (ja) | 冷媒分配器、熱交換器および空気調和装置 | |
WO2021245901A1 (ja) | 冷媒分配器、熱交換器および空気調和装置 | |
WO2023166612A1 (ja) | 熱交換器および熱交換器の製造方法 | |
WO2022208733A1 (ja) | 熱交換器 | |
JP6934608B2 (ja) | プレートフィン積層型熱交換器およびそれを用いた冷凍システム | |
US20220316812A1 (en) | Heat exchanger, heat exchange unit, refrigeration cycle apparatus, and method for manufacturing heat exchange member | |
WO2022259288A1 (ja) | 熱交換器及び室外機 | |
WO2023030508A1 (zh) | 换热器和多系统空调机组 | |
WO2023281656A1 (ja) | 熱交換器および冷凍サイクル装置 | |
US20220373264A1 (en) | Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21948248 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023531153 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2301007198 Country of ref document: TH |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2021948248 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021948248 Country of ref document: EP Effective date: 20240129 |