WO2020044391A1 - Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération - Google Patents

Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération Download PDF

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Publication number
WO2020044391A1
WO2020044391A1 PCT/JP2018/031502 JP2018031502W WO2020044391A1 WO 2020044391 A1 WO2020044391 A1 WO 2020044391A1 JP 2018031502 W JP2018031502 W JP 2018031502W WO 2020044391 A1 WO2020044391 A1 WO 2020044391A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
flat tube
flat
tube
pipe
Prior art date
Application number
PCT/JP2018/031502
Other languages
English (en)
Japanese (ja)
Inventor
石橋　晃
前田　剛志
中村　伸
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020539169A priority Critical patent/JP6980117B2/ja
Priority to EP18932105.2A priority patent/EP3845851B1/fr
Priority to PCT/JP2018/031502 priority patent/WO2020044391A1/fr
Priority to CN201880095774.3A priority patent/CN112567192A/zh
Publication of WO2020044391A1 publication Critical patent/WO2020044391A1/fr

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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
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • 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
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0435—Combination of units extending one behind the other
    • 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
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
    • 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
    • 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/02—Arrangements of fins common to different heat exchange sections, the fins being in contact with different heat exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins

Definitions

  • the present invention relates to a heat exchanger, a heat exchanger unit including the heat exchanger, and a refrigeration cycle apparatus, and particularly to a fin structure attached to a flat tube.
  • Tube heat exchangers are known. (See, for example, Patent Document 1).
  • the present invention has been made to solve the above problems, and improves the pressure resistance of a pipe through which a refrigerant flows, reduces the weight of a heat transfer fin, and is easy to manufacture. It is an object to obtain a refrigerator unit and a refrigeration cycle device.
  • the heat exchanger according to the present invention is provided with a first flat tube group including a plurality of flat tubes arranged in parallel with their tube axes parallel to each other, and is arranged adjacent to the first flat tube group to make the tube axes parallel.
  • a second flat tube group including the plurality of flat tubes arranged in parallel, a first flat tube that is one of the plurality of flat tubes included in the first flat tube group, and the second flat tube
  • a heat exchanger unit according to the present invention includes the above heat exchanger.
  • a refrigeration cycle device includes the heat exchanger unit.
  • the present invention since a plurality of flat tube groups constituted by a plurality of flat tubes are connected by fins, the pressure resistance of the tubes through which the refrigerant flows is improved, and the weight of the fins is reduced because the fins can be formed thin. Can be reduced. Further, it is possible to obtain a heat exchanger, a heat exchanger unit, and a refrigeration cycle device that have high heat exchange performance and are easy to manufacture.
  • FIG. 2 is a front view showing the heat exchanger according to Embodiment 1.
  • FIG. 2 is a side view showing the heat exchanger according to Embodiment 1.
  • FIG. 2 is an explanatory diagram of a refrigeration cycle device to which the heat exchanger according to Embodiment 1 is applied. It is explanatory drawing of the cross-section of the heat exchanger of FIG. It is a side view of the heat exchanger of the modification of the heat exchanger which concerns on Embodiment 1.
  • FIG. 4 is an explanatory diagram of a cross-sectional structure of a heat exchanger according to a modified example of the heat exchanger according to Embodiment 1. It is the enlarged view seen from the x direction of the slit.
  • FIG. 4 is an explanatory diagram of a cross-sectional structure of a heat exchanger according to a modified example of the heat exchanger according to Embodiment 1.
  • FIG. 1 is a front view showing a heat exchanger 100 according to the first embodiment.
  • FIG. 2 is a side view showing the heat exchanger 100 according to the first embodiment.
  • FIG. 3 is an explanatory diagram of the refrigeration cycle apparatus 1 to which the heat exchanger 100 according to Embodiment 1 is applied.
  • the heat exchanger 100 shown in FIGS. 1 and 2 is mounted on a refrigeration cycle device 1 such as an air conditioner or a refrigerator.
  • a refrigeration cycle device 1 such as an air conditioner or a refrigerator.
  • the compressor 3, the four-way valve 4, the outdoor heat exchanger 5, the expansion device 6, and the indoor heat exchanger 7 are connected by a refrigerant pipe 90 to form a refrigerant circuit. Things.
  • the refrigeration cycle apparatus 1 when the refrigeration cycle apparatus 1 is an air conditioner, the refrigerant flows through the refrigerant pipe 90, and the flow of the refrigerant is switched by the four-way valve 4, thereby switching to the heating operation, the refrigeration operation, or the defrosting operation. be able to.
  • the outdoor heat exchanger 5 mounted on the outdoor unit 8 and the indoor heat exchanger 7 mounted on the indoor unit 9 include the blower 2 in the vicinity.
  • the blower 2 sends outside air to the outdoor heat exchanger 5, and performs heat exchange between the outside air and the refrigerant.
  • the indoor unit 9 the blower 2 sends indoor air to the indoor heat exchanger 7, performs heat exchange between the indoor air and the refrigerant, and balances the temperature of the indoor air.
  • the heat exchanger 100 can be used as the outdoor heat exchanger 5 mounted on the outdoor unit 8 and the indoor heat exchanger 7 mounted on the indoor unit 9 in the refrigeration cycle apparatus 1, and can be used as a condenser or an evaporator. Function. Note that devices such as the outdoor unit 8 and the indoor unit 9 on which the heat exchanger 100 is mounted are particularly referred to as a heat exchanger unit.
  • the heat exchanger 100 shown in FIG. 1 includes two flat tube groups 10.
  • One of the two flat tube groups 10 is called a first flat tube group 10a, and the other is called a second flat tube group 10b.
  • the flat tube groups 10a and 10b may be collectively referred to as a flat tube group 10.
  • the first flat tube group 10a and the second flat tube group 10b are arranged in parallel in the x direction.
  • the flat tube group 10 includes a plurality of flat tubes 20.
  • the plurality of flat tubes 20 are shown as 20a and 20b in FIGS.
  • the plurality of flat tubes 20 of each flat tube group 10 are arranged in parallel in the y direction with their respective tube axes parallel to each other.
  • the tube axes of the plurality of flat tubes 20 are oriented in the z direction.
  • the reverse direction in the z direction coincides with the direction of gravity, but heat exchanger 100 may be arranged with the z axis inclined in the direction of gravity.
  • the plurality of flat tubes 20a of the first flat tube group 10a are connected to the lower end header 50a at the lower end in the tube axis direction, and are connected to the upper end header 51a at the upper end in the tube axis direction. .
  • the plurality of flat tubes 20b of the second flat tube group 10b are also connected to the lower end header 50b at the lower end in the tube axis direction, and are connected to the upper end header 51b at the upper end in the tube axis direction. It is connected.
  • the heat exchanger 100 includes two flat tube groups 10a and 10b. However, the heat exchanger 100 may include more flat tube groups 10.
  • FIG. 4 is an explanatory diagram of a cross-sectional structure of the heat exchanger 100 of FIG.
  • FIG. 4 shows a cross section perpendicular to the tube axis of the plurality of flat tubes 20 included in each of the plurality of flat tube groups 10, and is an explanatory diagram of a cross-sectional structure corresponding to the AA cross section in FIG.
  • a part of a plurality of flat tubes 20 constituting each flat tube group 10 is shown.
  • the plurality of flat tubes 20a of the first flat tube group 10a and the plurality of flat tubes 20b of the second flat tube group 10b are arranged with the long axis in the x direction and the short axis in the y direction in a cross section perpendicular to the tube axis.
  • the plurality of flat tubes 20a of the first flat tube group 10a and the plurality of flat tubes 20b of the second flat tube group 10b are arranged in a staggered manner. That is, the second flat tubes 20b constituting the second flat tube group 10b are arranged at positions displaced in the y-direction from an extension of the long axis of the first flat tubes 20a constituting the first flat tube group 10a. When viewed from the x direction, the second flat tube 20b is disposed on an extension of a gap between two adjacent first flat tubes 20a.
  • the first flat tube 20a and the second flat tube 20b may be collectively referred to as a flat tube 20.
  • fins 30 are installed on the first flat tubes 20a of the first flat tube group 10a and the second flat tubes 20b of the second flat tube group 10b.
  • the fin 30 is formed by bending a single plate-like member, and is installed with its plate surface along the first flat tube 20a and the second flat tube 20b.
  • the fins 30 since the tube axes of the first flat tube 20a and the second flat tube 20b coincide with the direction of gravity, the fins 30 have the plate surfaces arranged along the direction of gravity.
  • the heat exchanger 100 when the heat exchanger 100 functions as an evaporator, the condensed water adhered to the fins 30 due to dew condensation or the frost melted water due to the defrost operation when frost is formed can be discharged from the fins 30 without delay. Thereby, the heat exchanger 100 maintains a high heat exchange performance.
  • the fin 30 includes a first portion 31 disposed between the first flat tube 20a and the second flat tube 20b, a second portion 32 joined to the first flat tube 20a, and a second portion 32.
  • the third portion 33 joined to the flat tube 20b, the fourth portion 34 extending in the x-direction from the end 21a of the first flat tube 20a, and the end of the second flat tube 20b
  • a fifth portion 35 is provided extending in the x direction from the portion 22b.
  • the fin 30 and the first flat tube 20a are in contact at the second portion 32 and are joined by brazing or the like.
  • the second portion 32 has a concave shape formed by bending a plate-like member so as to follow the side surface shape of the first flat tube 20a, and the first flat tube 20a fits into the concave shape.
  • the fin 30 and the second flat tube 20b are in contact with each other at the third portion 33, and are joined by brazing or the like.
  • the third portion 33 is also formed with a concave shape along the side surface shape of the second flat tube 20b by bending the plate member, and the second flat tube 20b fits into the concave shape.
  • the second portion 32 and the third portion 33 of the fin 30 face different directions of the concave shape.
  • the concave shape of the second portion 32 is open in the y direction
  • the concave shape of the third portion 33 is open in the opposite direction to the y direction. That is, the first flat tube 20a is attached to one plate surface 38 of the fin 30 facing the y direction, and the second flat tube 20b is attached to the other plate surface 39 of the fin 30 facing the y direction. Is attached.
  • the first flat tube 20a and the second flat tube 20b are fitted in the concave shape of one fin 30.
  • the fin 30, the first flat tube 20a, and the second flat tube 20b can be handled as an integral part during manufacturing. That is, before joining with the lower end headers 50a and 50b and the upper end headers 51a and 51b, the two flat tubes 20 can be fitted and integrated into the concave shape of one fin 30, so that the two flat tubes 20 are joined before joining. Can be easily positioned with each other, and the assembling workability can be improved.
  • the fin 30 includes a first portion 31 located between the first flat tube group 10a and the second flat tube group 10b.
  • the first portion 31 is arranged so as to connect the concave end where the first flat tube 20a fits and the concave end where the second flat tube 20b fits.
  • the first portion 31 includes the end 22a of the end of the first flat tube 20a located on the second flat tube group 10b side and the first flat tube of the end of the second flat tube 20b. It is arranged so as to connect with the end 21b located on the group 10a side.
  • the first portion 31 is arranged to be inclined with respect to the long axis of the first flat tube 20a and the second flat tube 20b.
  • Embodiment 1 air flows into the heat exchanger 100 in the x direction.
  • the air meanders through the gap between the first flat tube 20a, the second flat tube 20b, and the fin 30. Flowing. Therefore, the heat exchanger 100 has an increased heat transfer area and improved heat transfer performance.
  • the air flowing on the side wall 23b of the second flat tube 20b collides as the wind is bent. Since the air flow between the second flat tubes 20b is disturbed by the collision of air, the temperature of the air that contacts each part of the second flat tubes 20b is easily averaged, and flows through the second flat tubes 20b. The dryness of the refrigerant is made uniform. Thereby, the heat exchanger 100 has improved heat exchange performance.
  • the fin 30 includes a flat plate-shaped fourth portion 34 extending from the end 21a of the first flat tube 20a that is opposite to the x direction. That is, the fourth portion 34 extends from the end 21a of the end of the first flat tube 20a opposite to the end 22a from which the first portion 31 extends. Further, the fin 30 includes a fifth flat portion 35 extending from the end 22b of the second flat tube 20b facing in the x direction. That is, the fifth portion 35 extends from the end 22b of the end of the second flat tube 20b opposite to the end 21b where the first portion 31 extends. Since the fin 30 includes the fourth portion 34 and the fifth portion 35, the heat exchanger 100 has an increased heat transfer area and improved heat transfer performance.
  • FIG. 5 is a side view of heat exchanger 100a as a modification of heat exchanger 100 according to Embodiment 1.
  • FIG. 6 is an explanatory diagram of a cross-sectional structure of a heat exchanger 100a according to a modified example of the heat exchanger 100 according to Embodiment 1.
  • FIG. 7 is an enlarged view of the slit 41 as viewed from the x direction.
  • FIG. 6 is an explanatory diagram of a cross-sectional structure corresponding to the BB cross section of FIG.
  • the heat exchanger 100a is located on the most windward side of the fin 30, and a slit 41 is provided in a fourth portion 34 extending from the end 21a of the first flat tube 20a.
  • the slit 41 is formed by cutting and raising a part of the fourth portion 34 in a direction perpendicular to the plate surface. As shown in FIG. 7, the plate-shaped fourth portion 34 is partially cut and raised, and a parallel portion 45 positioned substantially parallel to the fourth portion 34 and a fourth portion from both ends of the parallel portion 45. A rising portion 44 that connects the plate surfaces of the portion 34 is formed.
  • the heat exchanger 100a is located on the most leeward side of the fin 30, and the fifth portion 35 extending from the end 21b of the second flat tube 20b is also provided with a slit 41.
  • the slit 41 is provided in the same structure as in the fourth portion 34. Therefore, the boundary layer of the flow of the air flowing parallel to the surface of the fifth portion 35 is reduced, and it is possible to suppress the increase in the ventilation resistance while improving the heat transfer performance.
  • the heat exchanger 100a includes a louver 40 in the first portion 31 located between the first flat tube 20a and the second flat tube 20b.
  • the louver 40 is formed by cutting and raising a part of the plate-shaped first portion 31, and extends in the x direction in parallel with the long axes of the first flat tube 20a and the second flat tube 20b. It is a tongue piece. Further, an opening is formed at the base of the louver 40 so as to penetrate the plate surface of the first portion 31.
  • the louver 40 extends in parallel with the flow of air passing between the first flat tubes 20a. Therefore, the air passes through a hole formed in the plate surface of the first portion 31 where the louver 40 is provided.
  • the heat exchangers 100 and 100a are manufactured by the following steps. First, the plurality of fins 30 are combined with the first flat tube group 10a and the second flat tube group 10b. Each flat tube 20 is fitted into the concave shape of the fin 30. In a state where the first flat tube 20a, the second flat tube 20b, and the fin 30 are integrated, the first flat tube 20a and the second flat tube 20b have ends in the tube axial direction at the lower end header 50a. , 50b or upper headers 51a, 51b. Thereafter, the fins 30 are pulled from the fourth portion 34 and the fifth portion 35 located at both ends in the x direction of FIGS.
  • the fin 30 has the second portion 32 pressed against the first flat tube 20a, and the third portion 33 pressed against the second flat tube 20b.
  • the plurality of flat tubes 20a, 20b are inserted into the lower end headers 50a, 50b and the upper end headers 51a, 51b.
  • the brazing material is arranged at the joint between the plurality of flat tubes 20a, 20b and the lower headers 50a, 50b and the upper headers 51a, 51b, and at the joint between the plurality of flat tubes 20a, 20b and the fins 30. It is inserted and brazed. Since the heat exchangers 100 and 100a can handle the first flat tube group 10a and the second flat tube group 10b integrally by the plurality of fins 30, the heat exchangers 100 and 100a have an advantage that assembly is easy and manufacturing is easy. is there.
  • the first flat tube 20a and the second flat tube 20b are arranged in a staggered manner with their long axes parallel to each other. Although arranged obliquely with respect to the tube 20a and the second flat tube 20b, the present invention is not limited to this embodiment. Further, as a modified example of the heat exchanger 100 according to Embodiment 1, the heat exchanger 100a in which both the louver 40 and the slit 41 are formed has been described, but one of the louver 40 and the slit 41 is formed. It may be a heat exchanger.
  • FIG. 8 is an explanatory diagram of a cross-sectional structure of a heat exchanger 100b according to a modified example of the heat exchanger 100 according to Embodiment 1.
  • FIG. 8 is an explanatory diagram of a cross section corresponding to the AA cross section of FIG.
  • the first portion 31, the second portion 32 into which the first flat tube 20a fits, and the third portion 33 into which the second flat tube 20b fits become parallel.
  • the fourth part 34 located at the most leeward side and the fifth part 35 located at the most leeward side are the first part 31, the second part 32 to which the first flat tube 20a fits, And the third portion 33 in which the second flat tube 20b fits.
  • the air flowing into the heat exchanger 100 in the x direction collides with the side wall 23a of the first flat tube 20a. Since the air flow between the first flat tubes 20a is disturbed by the collision of air, the temperature of the air that contacts each part of the first flat tubes 20a is easily averaged, and flows through the first flat tubes 20a. The dryness of the refrigerant is made uniform. Thereby, the heat exchanger 100b has improved heat exchange performance.
  • the heat exchangers 100, 100a, and 100b according to Embodiment 1 have high energy efficiency by being used in at least one of the outdoor heat exchanger 5 and the indoor heat exchanger 7 of the refrigeration cycle apparatus 1 shown in FIG.
  • the refrigeration cycle device 1 can be provided.
  • the effects can be achieved with refrigerants such as R410A, R32, and HFO1234yf. You can do it.
  • refrigerants such as R410A, R32, and HFO1234yf. You can do it.
  • air and a refrigerant are used as the working fluid, but the same effect can be obtained by using another gas, liquid, or gas-liquid mixed fluid.
  • the structures of the heat exchangers 100, 100a, and 100b according to the first embodiment can be appropriately combined.
  • both or one of the louver 40 and the slit 41 of the heat exchanger 100a can be applied to the heat exchanger 100b.
  • Refrigeration cycle device 2 blower, 3 compressor, 4 four-way valve, 5 outdoor heat exchanger, 6 expansion device, 7 indoor heat exchanger, 8 outdoor unit, 9 indoor unit, 10 flat tube group, 10 a (first) Flat tube group, 10b (second) flat tube group, 20 flat tube, 20a (first) flat tube, 20b (second) flat tube, 21a end, 21b end, 22a end, 22b end , 23a side wall, 23b side wall, 30 fin, 31 first part, 32 second part, 33 3 third part, 34 fourth part, 35 fifth part, 38 plate surface, 39 plate surface, 40 louver , 41 slit, 44 rising section, 45 parallel section, 50 bottom header, 50a bottom header, 50b bottom header, 51 top header, 51a top header, 51b top header, 90 Refrigerant pipe, 100 heat exchanger, 100a heat exchanger, 100b heat exchanger.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'objet de l'invention est de fournir un échangeur de chaleur, une unité d'échangeur de chaleur et un dispositif à cycle de réfrigération dans lesquels les propriétés de résistance à la pression d'un tuyau permettant l'écoulement d'un réfrigérant en son sein sont améliorées et le poids d'ailettes de transfert de chaleur est réduit, et qui peuvent être fabriqués facilement. La présente invention comprend : un premier groupe de tuyaux plats doté d'une pluralité de tuyaux plats agencés côte à côte avec leurs axes de tuyau agencés parallèles les uns aux autres : un second groupe de tuyaux plats disposés adjacents au premier groupe de tuyau plats et dotés d'une pluralité de tuyaux plats agencés côte à côte avec leurs axes de tuyau agencés parallèles les uns aux autres ; un premier tuyau plat, qui est l'un de la pluralité de tuyaux plats du premier groupe de tuyaux plats ; un second tuyau plat, qui est l'un de la pluralité de tuyaux plats du second groupe de tuyaux plats ; et une ailette montée sur le premier tuyau plat et le second tuyau plat. L'ailette présente une première partie qui raccorde une extrémité de l'axe long d'une section transversale du premier tuyau plat perpendiculaire à l'axe de tuyau du premier tuyau plat et une extrémité de l'axe long d'une section transversale du second tuyau plat perpendiculaire à l'axe de tuyau du second tuyau plat.
PCT/JP2018/031502 2018-08-27 2018-08-27 Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération WO2020044391A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2020539169A JP6980117B2 (ja) 2018-08-27 2018-08-27 熱交換器、熱交換器ユニット、及び冷凍サイクル装置
EP18932105.2A EP3845851B1 (fr) 2018-08-27 2018-08-27 Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération
PCT/JP2018/031502 WO2020044391A1 (fr) 2018-08-27 2018-08-27 Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération
CN201880095774.3A CN112567192A (zh) 2018-08-27 2018-08-27 热交换器、热交换器单元及制冷循环装置

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PCT/JP2018/031502 WO2020044391A1 (fr) 2018-08-27 2018-08-27 Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération

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CN112277570A (zh) * 2020-10-30 2021-01-29 安徽江淮汽车集团股份有限公司 暖风芯体及汽车空调
WO2022085067A1 (fr) * 2020-10-20 2022-04-28 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération
WO2023105566A1 (fr) * 2021-12-06 2023-06-15 三菱電機株式会社 Échangeur de chaleur

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WO2022085067A1 (fr) * 2020-10-20 2022-04-28 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération
CN112277570A (zh) * 2020-10-30 2021-01-29 安徽江淮汽车集团股份有限公司 暖风芯体及汽车空调
CN112277570B (zh) * 2020-10-30 2022-05-20 安徽江淮汽车集团股份有限公司 暖风芯体及汽车空调
WO2023105566A1 (fr) * 2021-12-06 2023-06-15 三菱電機株式会社 Échangeur de chaleur

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EP3845851A4 (fr) 2021-09-01
EP3845851A1 (fr) 2021-07-07
JPWO2020044391A1 (ja) 2021-05-13
JP6980117B2 (ja) 2021-12-15
CN112567192A (zh) 2021-03-26

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