WO2022209919A1 - Heat exchanger, and outdoor unit comprising said heat exchanger - Google Patents
Heat exchanger, and outdoor unit comprising said heat exchanger Download PDFInfo
- Publication number
- WO2022209919A1 WO2022209919A1 PCT/JP2022/012064 JP2022012064W WO2022209919A1 WO 2022209919 A1 WO2022209919 A1 WO 2022209919A1 JP 2022012064 W JP2022012064 W JP 2022012064W WO 2022209919 A1 WO2022209919 A1 WO 2022209919A1
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- WIPO (PCT)
- Prior art keywords
- heat exchanger
- header
- refrigerant
- distributor
- branch
- Prior art date
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- 239000003507 refrigerant Substances 0.000 claims abstract description 87
- 238000005192 partition Methods 0.000 claims description 12
- 239000002826 coolant Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 7
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 18
- 238000001816 cooling Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
- F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
- F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
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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
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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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
Definitions
- the present invention relates to, for example, a heat exchanger used in a top-blown outdoor unit in an air conditioner, and an outdoor unit provided with this heat exchanger.
- a top-blown outdoor unit in an air conditioner has a blower fan at the top and a vertically long heat exchanger below the blower fan. It exchanges heat with the refrigerant that flows through the heat exchanger.
- the blower fan since the blower fan is installed at the top, the speed of the air passing through the heat exchanger due to the suction of outside air by the blower fan is faster on the upper side closer to the blower fan and slower on the lower side farther from the fan, resulting in heat.
- the wind speed distribution of the wind passing through the exchanger becomes uneven. As a result, the capacity of the heat exchanger cannot be effectively used, and there is a problem that the amount of heat exchanged is lowered and the air blowing performance is lowered.
- a heat exchanger that flows a refrigerant through a plurality of heat transfer tubes arranged in parallel, is connected to one end of the plurality of heat transfer tubes, and the inside is partitioned by a partition plate.
- the header has a vertically installed header, a distributor for distributing and inflowing the refrigerant to each room in the header partitioned by partition plates, and a capillary tube connected to each room from the distributor.
- An invention is disclosed in which a refrigerant distributor is provided and the length and inner diameter of a capillary tube are set according to the wind speed distribution in a heat exchanger.
- the length and inner diameter of the capillary tube are set according to the wind speed distribution in the heat exchanger. This is effective in that it is possible to suppress a decrease in the amount of heat exchange due to non-uniform wind speed distribution.
- the length and inner diameter of the capillary tube are set according to the air velocity distribution in the heat exchanger.
- a plurality of types of capillary tubes with different sheath inner diameters must be prepared, which causes a problem of increased cost.
- the present invention provides a heat exchanger capable of suppressing a decrease in heat exchange amount due to non-uniform wind speed distribution.
- a first aspect of the present invention includes an inlet header that is positioned on the refrigerant inlet side, an outlet header that is positioned on the refrigerant outlet side, and a partition plate inside either the inlet header or the outlet header. and connected in parallel between each of the plurality of rooms provided in either one of the inlet header and the outlet header and the other of the inlet header and the outlet header.
- a heat exchanger comprising a plurality of flat tubes, a distributor provided in the refrigerant piping, and a plurality of branch pipes connected to each room and the distributor, depending on the wind speed distribution in the heat exchanger,
- a branch pipe is provided between the room and the distributor, and the number of branches of the branch pipe connected to the room where the flat pipe located in the part where the wind speed is high is connected is the flat pipe that passes through the part where the wind speed is low.
- a second aspect of the present invention is a top-blown outdoor unit of an air conditioner having a blower fan at the top and a heat exchanger according to the first aspect of the present invention below the blower fan. .
- the present invention provides a heat exchanger capable of suppressing a decrease in heat exchange amount due to non-uniform wind speed distribution.
- FIG. 1 is a refrigerant circuit diagram of an air conditioner according to an embodiment of the present invention
- FIG. 1 is a longitudinal sectional view of an outdoor unit of an air conditioner according to an embodiment of the present invention
- FIG. 1 is a schematic diagram of a heat exchanger of an air conditioner according to an embodiment of the present invention
- FIG. 1 shows a refrigerant circuit diagram of an air conditioner 1 according to an embodiment of the present invention.
- An air conditioner 1 is capable of cooling operation and heating operation, and includes an outdoor unit 2 arranged outdoors and an indoor unit 3 arranged indoors.
- the outdoor unit 2 includes a compressor 4, a four-way valve 5, an outdoor heat exchanger 9, and an outdoor unit side expansion valve 7 connected by refrigerant piping 10.
- the indoor unit 3 is connected by the refrigerant piping 10 to the indoor unit side.
- An expansion valve 6 and an indoor heat exchanger 8 are provided.
- the outdoor heat exchanger 9 is the heat exchanger in the present invention.
- the outdoor unit 2 includes a blower fan 16 for sending outside air to the outdoor heat exchanger 12
- the indoor unit 3 includes an indoor fan (not shown) for sending indoor air to the indoor heat exchanger 8.
- the four-way valve 5 is connected to the discharge side of the compressor 4 and is a switching valve that changes the direction of flow of the refrigerant circulating in the refrigerant circuit 11 between cooling operation and heating operation.
- the refrigerant discharged from the compressor 4 passes through the four-way valve 5 to the outdoor heat exchanger 9, the outdoor unit side expansion valve 7, the indoor unit side expansion valve 6, the indoor heat exchanger 8, the four-way valve 5, the compression
- the refrigerant discharged from the compressor 4 passes through the four-way valve 5 to the indoor heat exchanger 8, the indoor unit expansion valve 6, the outdoor unit expansion valve 7, and the outdoor heat exchanger. It flows to the exchanger 9 , the four-way valve 5 and the suction side of the compressor 4 .
- the arrows indicated by solid lines indicate the flow of refrigerant during heating operation
- the arrows indicated by broken lines indicate the flow of refrigerant during cooling operation.
- the flow of refrigerant in the refrigerant circuit 11 during heating operation will be described.
- the high-temperature, high-pressure refrigerant compressed by the compressor 4 flows through the indoor heat exchanger 8 via the four-way valve 5 .
- the high-temperature, high-pressure refrigerant flowing through the indoor heat exchanger 8 exchanges heat with the indoor air blown by the indoor fan to radiate heat, and the indoor air that has exchanged heat with the high-temperature, high-pressure refrigerant is warmed.
- the refrigerant After passing through the indoor heat exchanger 8 and radiating heat, the refrigerant passes through the indoor unit side expansion valve 6 and is then decompressed by the outdoor unit side expansion valve 7 to become a two-phase refrigerant in which gas refrigerant and liquid refrigerant are mixed.
- the refrigerant in the state of two-phase refrigerant flows through the outdoor heat exchanger 9 and absorbs heat through heat exchange with the outside air blown by the blower fan 16 when passing through the outdoor heat exchanger 9 to become a gas refrigerant.
- the refrigerant that absorbs heat and becomes a gaseous refrigerant returns to the compressor 4 via the four-way valve 5 and is again compressed to a high temperature and high pressure.
- the outdoor unit side expansion valve 7 After the high-temperature and high-pressure liquid refrigerant passes through the outdoor unit side expansion valve 7, it is decompressed by the indoor unit side expansion valve 6, and becomes a two-phase refrigerant state in which gas refrigerant and liquid refrigerant are mixed.
- the two-phase refrigerant flows through the indoor heat exchanger 8 and absorbs heat through heat exchange with the indoor air blown by the indoor fan when passing through the indoor heat exchanger 8 to become a gaseous refrigerant.
- the refrigerant that absorbs heat and becomes a gaseous refrigerant returns to the compressor 4 via the four-way valve 5 and is again compressed to a high temperature and high pressure.
- FIG. 2 is a vertical cross-sectional view of the outdoor unit 2, the upper side shows the upward direction when the outdoor unit 2 is installed, and the lower side shows the downward direction.
- the outdoor unit 2 is a so-called top-blown type outdoor unit, and has a housing 15 with an opening as a ventilation port 18 at the top and an opening as an intake port 17 at the side.
- a blower fan 16 is provided inside the housing in the vicinity of a ventilation port 18 , and an elongated outdoor heat exchanger 9 is arranged below the blower fan 16 so as to face the suction port 17 .
- the outdoor heat exchanger 9 includes an inlet header 20, an outlet header 21, a plurality of flat tubes 22, a plurality of heat transfer fins 23, a plurality of branch tubes 24a to 24c having the same diameter, and a distributor 25. I have it.
- the inlet header 20 and outlet header 21 are based on the flow of refrigerant in the refrigerant circuit 11 during heating operation. During heating operation, refrigerant flows into the inlet header 20 and flows out from the outlet header 21, During cooling operation, refrigerant flows into the outlet header 21 and flows out from the inlet header 20 .
- the number of flat tubes 22 is 14 for convenience.
- Each of the plurality of flat tubes 22 is formed in a linear belt shape.
- the plurality of flat tubes 22 are arranged between the inlet header 20 and the outlet header 21 and are stacked vertically with a predetermined spacing therebetween.
- One end of the plurality of flat tubes 22 is connected to the inlet header 20 and the other end of the plurality of flat tubes 22 is connected to the outlet header 21 .
- a plurality of through holes are formed in the flat tube 22 from one end to the other end, and the coolant flows through the through holes.
- the higher the flat tubes 22 are located the higher the wind speed received, and the lower the flat tubes 22, the lower the wind speed received. Therefore, the amount of heat exchange between the refrigerant flowing through the flat tubes 22 and the outside air is greater in the upper flat tubes 22 and smaller in the lower areas.
- the plurality of heat transfer fins 23 are plate-like fins stacked with a space between the inlet header 20 and the outlet header 21 and air passes therebetween. passes through and is thermally connected.
- the inlet header 20 and the outlet header 21 are formed in a cylindrical shape, the outlet header 21 is connected to the refrigerant pipe 10, and the inlet header 20 is connected to a plurality of branch pipes 24a to 24c.
- the interior of the inlet header 20 is partitioned by a partition plate 30 to form a plurality of chambers 31a to 31g.
- the partition plate 30 is arranged so that the heights of the rooms 31a to 31g are the same, and the sizes of the rooms 31a to 31g are the same.
- the interior of the inlet header 20 is partitioned by six partition plates 30 to form seven upper and lower chambers 31a to 31g.
- Two flat tubes 22 connected to the inlet header 20 are connected to each of the rooms 31a to 31g.
- the distributor 25 is connected to the refrigerant pipe 10 extending from the outdoor unit side expansion valve 7 and also connected to three branch pipes 24 a to 24 c extending from the inlet header 20 .
- the branch pipe 24a which is one of the three branch pipes 24a to 24c connected to the distributor 25, is connected to the highest room 31a in the height direction of the outdoor heat exchanger 9. ing.
- a branch pipe 24b which is one of the three branch pipes 24a to 24c, is divided into two branch pipes 24b by a branching portion 27, and one of the two branch pipes 24b is located in the second-highest room 31b. and the other is connected to room 31c at the third level.
- one branch pipe 24b connected to the distributor 25 is divided into two by one branch portion 27 and connected to the two chambers 31b and 31c, respectively.
- a branch pipe 24c which is one of the three branch pipes 24a to 24c, is divided into two branch pipes 24c by a branch portion 27, and one of the two branch pipes 24c is further divided into two by the branch portion 27.
- One of the two branch pipes 24c is connected to the fourth level room 31d and the other is connected to the fifth level room 31e.
- the other of the two branch pipes 24c is further divided into two branch pipes 24c by a branching portion 27, one of the two branch pipes 24c is connected to the sixth room 31f, The other is connected to room 31g at the seventh level. Therefore, one branch pipe 24c connected to the distributor 25 is first divided into two by the first branch portion 27, and further divided into two by the second branch portion 27 to divide the rooms 31d to 31g. connected to each other.
- the amount of refrigerant flowing into each of the rooms 31a to 31g of the outdoor heat exchanger 9 is determined by three branch pipes having the same diameter, assuming that the amount of refrigerant flowing into the distributor 25 from the outdoor unit side expansion valve 7 during heating operation is 1.
- 24a to 24c are connected to the distributor 25, and since the branch pipe 24a does not have a branch portion 27, 1/3 of the refrigerant flows into the chamber 31a located at the highest level. Since there is one branch 27 in the middle of the branch pipe 24b, 1 ⁇ 6 of the refrigerant flows into the chambers 31b and 31c located at the second and third heights. Similarly, since there are two branch portions 27 in the middle of the branch pipe 24c, 1/12 of the refrigerant flows into the chambers 31d to 31g.
- a large amount of refrigerant flows into the room 31a connected to the flat tubes 22 located in the high wind velocity range, and flows into the rooms 31b and 31c connected to the flat tubes 22 located in the medium wind velocity range.
- the distribution amount of the refrigerant is moderate, and since the distribution amount of the refrigerant flowing into the rooms 31d to 31g to which the flat tubes 22 located in the range of low wind speed are connected is set to be small, the flow rate of the refrigerant can be adjusted according to the air flow rate. Therefore, the ability of the heat exchanger to make the state of the refrigerant uniform on the outlet side of the flat tube can be sufficiently exhibited.
- the amount of refrigerant flowing to the upper portion where a large amount of heat exchange can be expected is increased, and the amount of refrigerant flowing to the lower portion where the amount of heat exchange is small is reduced, so that the heat exchanger as a whole can function without waste.
- the three branch pipes 24a to 24c connected between the chambers 31a to 31g arranged in the vertical direction of the inlet header 20 and the 25 distributor are provided with the wind speed distribution in the outdoor heat exchanger 9.
- a branch portion 27 is provided in accordance with. That is, in the branch pipe 24a that connects the room 31a located in the range where the wind speed is high and the distributor 25, the branch portion 27 is not provided between the distributor 25 and the room 31a.
- the branch pipe 24b connecting the rooms 31b to 31e located in the medium wind speed range and the distributor 25 one branch portion 27 is provided between the distributor 25 and the rooms 31b to 31e.
- the three branch pipes 24a to 24c connected between the chambers 31a to 31g arranged in the vertical direction of the inlet header 20 and the distributor 25 are provided with the wind speed distribution in the outdoor heat exchanger 9. Since the branching portion 27 is provided according to , the substantial amount of heat exchange is substantially the same in the vertical direction of the outdoor heat exchanger 9, and the refrigerant condition of the outlet header 21 can be uniformed. Compared to the case where the flow rate is adjusted by increasing the flow resistance using a conventional capillary tube, the refrigerant state in the outlet header 21 can be uniformed without increasing the pressure loss of the refrigerant passing through the heat exchanger. A decrease in the cooling/heating capacity of the air conditioner due to an increase in pressure loss can be suppressed. In addition to this effect, the embodiment of the present invention has the following effect.
- the interior of the inlet header 20 is partitioned by a partition plate 30.
- the partition plate 30 is arranged so that the heights of the rooms 31a to 31g are the same. ) are the same. Therefore, it is not necessary to adjust the height of each of the chambers 31a to 31g according to the wind velocity distribution in the outdoor heat exchanger 9 and the specifications of the outdoor heat exchanger, so the manufacturing cost can be reduced.
- the three branch pipes 24a to 24c connected between the chambers 31a to 31g arranged in the vertical direction of the inlet header 20 and the distributor 25 are branch pipes having the same diameter. Therefore, since it is not necessary to adjust the diameter of each branch pipe 24a to 24c according to the wind velocity distribution in the outdoor heat exchanger 9 and the specifications of the outdoor heat exchanger, the manufacturing cost can be suppressed. In addition, by simply setting the number of branches 27 from the distributor 25 to each room 31 according to the wind speed distribution in the outdoor heat exchanger 9 and the specifications of the outdoor heat exchanger, the air can flow into each room 31a to 31g. Since the amount of refrigerant to be used can be adjusted, the manufacturing cost can be suppressed.
- the flow of the refrigerant in the refrigerant circuit 11 during heating operation is used as a reference, and when the refrigerant flows into the inlet header 20 and flows out from the outlet header 21 during heating operation, the inflow side
- the inside of the inlet header 20 on the inflow side is partitioned by a partition plate 30 to form chambers 31a to 31g of the same height, and three chambers 31a to 31g are provided between the chambers 31a to 31g and the distributor 25.
- the three branch pipes 24a to 24c are connected and the branching portion 27 is provided in the three branch pipes 24a to 24c according to the wind speed distribution in the outdoor heat exchanger 9, the reverse is also possible.
- the refrigerant flows into the inlet header 20 on the inflow side.
- the refrigerant flows in via the outdoor unit side expansion valve 7, the distributor 25 is arranged on the outflow side, and the inside of the outlet header 21 on the outflow side is partitioned by the partition plate 30 to create chambers 31a to 31g of the same height. are formed, and three branch pipes 24a to 24c are connected between each room 31a to 31g and the distributor 25, and the three branch pipes 24a to 24c are branched according to the wind speed distribution in the outdoor heat exchanger 9.
- a portion 27 may be provided. Even in this case, the same effect can be obtained.
- the air conditioner 1 of the present embodiment is an air conditioner capable of cooling operation and heating operation, it may be an air conditioner capable of either cooling operation or heating operation.
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- Other Air-Conditioning Systems (AREA)
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Abstract
Description
Claims (4)
- 冷媒入口側に位置するヘッダである入口ヘッダと、
冷媒出口側に位置するヘッダである出口ヘッダと、
前記入口ヘッダと前記出口ヘッダのどちらか一方のヘッダの内部に仕切板によって仕切られた複数の部屋が設けられ、
前記入口ヘッダと前記出口ヘッダのどちらか一方に設けられた複数の前記部屋の各々と、前記入口ヘッダと前記出口ヘッダのどちらか他方のヘッダとの間に、並列に接続される複数の扁平管と、
冷媒配管に設けられる分配器と、
前記各部屋と前記分配器とに接続する複数の分岐管と、を備えた熱交換器において、
前記熱交換器における風速分布に応じて、前記分岐管は前記部屋と前記分配器の間に分岐部が設けられ、
風速が大きい部分に位置する前記扁平管が接続される前記部屋に接続する前記分岐管の前記分岐部の数は、
風速が小さい部分を通過する前記扁平管が接続される前記部屋に接続する前記分岐管の前記分岐部の数よりも少ないことを特徴とする熱交換器。 an inlet header, which is a header located on the coolant inlet side;
an outlet header, which is a header located on the refrigerant outlet side;
a plurality of rooms partitioned by partition plates are provided inside one of the inlet header and the outlet header;
A plurality of flat tubes connected in parallel between each of the plurality of chambers provided in either one of the inlet header and the outlet header and the other of the inlet header and the outlet header. When,
a distributor provided in the refrigerant pipe;
A heat exchanger comprising a plurality of branch pipes connected to each of the chambers and the distributor,
The branch pipe is provided with a branch portion between the room and the distributor according to the wind speed distribution in the heat exchanger,
The number of branch portions of the branch pipe connected to the room to which the flat pipe located in the portion where the wind speed is high is
A heat exchanger, wherein the number of branches of the branch pipes connected to the room to which the flat pipes passing through a portion where the wind velocity is low is connected is smaller than the number of the branch portions. - 並列に接続される前記扁平管が並ぶ方向における前記各部屋の長さは同一であることを特徴とする請求項1に記載の熱交換器。 The heat exchanger according to claim 1, wherein the lengths of the respective chambers in the direction in which the flat tubes connected in parallel are arranged are the same.
- 一方の前記ヘッダは前記入口ヘッダであり、他方の前記ヘッダは出口ヘッダであることを特徴とする請求項1または2に記載の熱交換器。 The heat exchanger according to claim 1 or 2, wherein one of the headers is the inlet header and the other header is the outlet header.
- 上部に送風ファンが設けられ、前記送風ファンの下方に請求項1から3のいずれか1項に記載の熱交換器が設けられ、前記熱交換器は、複数の前記扁平管の並列方向は上下方向であり、前記入口ヘッダと前記出口ヘッダが上下方向に立てて設置されたことを特徴とする空気調和機の上吹き型の室外機。 A blower fan is provided in the upper part, and the heat exchanger according to any one of claims 1 to 3 is provided below the blower fan, and the heat exchanger is arranged such that the plurality of flat tubes are arranged in a vertical direction. A top-blown outdoor unit for an air conditioner, wherein the inlet header and the outlet header are vertically installed.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22780139.6A EP4317812A1 (en) | 2021-03-29 | 2022-03-16 | Heat exchanger, and outdoor unit comprising said heat exchanger |
US18/284,099 US20240175643A1 (en) | 2021-03-29 | 2022-03-16 | Heat exchanger and outdoor unit comprising said heat exchanger |
AU2022249485A AU2022249485A1 (en) | 2021-03-29 | 2022-03-16 | Heat exchanger, and outdoor unit comprising said heat exchanger |
CN202280024997.7A CN117063021A (en) | 2021-03-29 | 2022-03-16 | Heat exchanger and outdoor unit provided with same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2021056043A JP7279730B2 (en) | 2021-03-29 | 2021-03-29 | Heat exchanger, outdoor unit with this heat exchanger |
JP2021-056043 | 2021-03-29 |
Publications (1)
Publication Number | Publication Date |
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WO2022209919A1 true WO2022209919A1 (en) | 2022-10-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2022/012064 WO2022209919A1 (en) | 2021-03-29 | 2022-03-16 | Heat exchanger, and outdoor unit comprising said heat exchanger |
Country Status (6)
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US (1) | US20240175643A1 (en) |
EP (1) | EP4317812A1 (en) |
JP (1) | JP7279730B2 (en) |
CN (1) | CN117063021A (en) |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62107262U (en) * | 1985-12-24 | 1987-07-09 | ||
JP2010127601A (en) * | 2008-12-01 | 2010-06-10 | Fujitsu General Ltd | Air conditioner |
WO2013160952A1 (en) * | 2012-04-26 | 2013-10-31 | 三菱電機株式会社 | Coolant distributor, and heat exchanger equipped with coolant distributor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN209459264U (en) * | 2018-12-05 | 2019-10-01 | 锦江百浪新能源有限公司 | Evaporator |
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2021
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2022
- 2022-03-16 AU AU2022249485A patent/AU2022249485A1/en active Pending
- 2022-03-16 EP EP22780139.6A patent/EP4317812A1/en active Pending
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62107262U (en) * | 1985-12-24 | 1987-07-09 | ||
JP2010127601A (en) * | 2008-12-01 | 2010-06-10 | Fujitsu General Ltd | Air conditioner |
WO2013160952A1 (en) * | 2012-04-26 | 2013-10-31 | 三菱電機株式会社 | Coolant distributor, and heat exchanger equipped with coolant distributor |
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CN117063021A (en) | 2023-11-14 |
AU2022249485A1 (en) | 2023-10-12 |
JP2022153026A (en) | 2022-10-12 |
EP4317812A1 (en) | 2024-02-07 |
JP7279730B2 (en) | 2023-05-23 |
US20240175643A1 (en) | 2024-05-30 |
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