WO2021245986A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2021245986A1
WO2021245986A1 PCT/JP2021/004504 JP2021004504W WO2021245986A1 WO 2021245986 A1 WO2021245986 A1 WO 2021245986A1 JP 2021004504 W JP2021004504 W JP 2021004504W WO 2021245986 A1 WO2021245986 A1 WO 2021245986A1
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WO
WIPO (PCT)
Prior art keywords
flow path
heat exchanger
plate fins
header
plate
Prior art date
Application number
PCT/JP2021/004504
Other languages
English (en)
Japanese (ja)
Inventor
拓也 奥村
健二 名越
憲昭 山本
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to EP21817911.7A priority Critical patent/EP4160130A4/fr
Priority to CN202180038894.1A priority patent/CN115885150A/zh
Publication of WO2021245986A1 publication Critical patent/WO2021245986A1/fr

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Classifications

    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • 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
    • F25B39/022—Evaporators with plate-like or laminated elements
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • F28D1/0341—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits
    • 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
    • F28D2021/007—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
    • 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
    • F28D2021/0071—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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/02—Heat exchange conduits with particular branching, e.g. fractal conduit arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between 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
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • This disclosure relates to a plate fin laminated heat exchanger.
  • Patent Document 1 discloses a conventional plate fin laminated heat exchanger. As shown in FIGS. 7 and 8, this plate fin laminated heat exchanger has a plate fin laminated body 102 in which plate fins 101 having a flow path through which a first fluid such as a refrigerant flows flows, and a plate fin laminated body 102.
  • the end plates 103 are laminated and arranged on both sides of the body 102, and the inflow / outflow pipes 104 and 105 through which the first fluid flowing through the flow path of the plate fin laminated body 102 flows in and out.
  • the second fluid flows between the stacks of the plate fins 101 of the plate fin laminate 102, so that heat exchange is performed between the first fluid and the second fluid.
  • Through holes 107 are provided at appropriate positions on the peripheral edge of the header region 106, which is the entrance / exit portion of the flow path of the first fluid of the plate fin laminated body 102.
  • the header region portion of each plate fin 101 is connected and fixed by passing the bolt 109 through the through hole 107 via the reinforcing plate 108.
  • the present disclosure provides a plate fin laminated heat exchanger that suppresses deformation of the plate fin due to insufficient strength of the connection and fixing while simplifying the configuration of the connection and fixing of the header region portion of the plate fin.
  • the plate fin laminated heat exchanger in the present disclosure has a tubular portion provided at an appropriate position on the peripheral edge of the header region portion of the plate fin.
  • the header areas of the plate fins are connected and fixed by fitting the tubular portions of the adjacent plate fins to each other.
  • FIG. 1 is a perspective view showing the appearance of the plate fin laminated heat exchanger according to the first embodiment.
  • FIG. 2 is an enlarged perspective view showing a header region of the heat exchanger.
  • FIG. 3 is an enlarged cross-sectional view showing a header region of the heat exchanger.
  • FIG. 4 is an enlarged cross-sectional view showing a main part of the header region of the heat exchanger.
  • FIG. 5 is an enlarged cross-sectional view of the portion shown by A in FIG.
  • FIG. 6 is an exploded perspective view of the plate fins of the heat exchanger according to the first embodiment.
  • FIG. 7 is a perspective view of a conventional plate fin laminated heat exchanger.
  • FIG. 8 is a perspective view showing a state of the conventional plate fin laminated heat exchanger before connecting and fixing the header region.
  • the plate fin laminated heat exchanger described in Patent Document 1 is a heat exchanger proposed by the present inventors.
  • the header region 106 in which the first fluid such as the refrigerant flowing in the flow path gathers is deformed by the pressure of the first fluid. Since it is easy, the reinforcing plate 108 is applied to the outer surface of the header region 106, and the header region 106 portion is connected and fixed by the bolt 109.
  • the reinforcing plate 108 and the bolt 109 and the like are required in the conventional configuration, so that the configuration is complicated and the weight of the entire heat exchanger increases, and the reinforcing plate 108 and the bolt 109 are required. It was found that there is a problem that productivity is reduced due to the need for assembly work.
  • the present disclosure provides a heat exchanger with improved reliability by suppressing deformation of the header region portion of the plate fin while simplifying the configuration of connecting and fixing the header region portion of the plate fin.
  • the heat exchanger of the present disclosure is not limited to the configuration of the plate fin laminated heat exchanger described in the following embodiments, and has the same heat as the technical idea described in the following embodiments. It includes the configuration of the exchanger.
  • FIG. 1 is a perspective view showing the appearance of the plate fin laminated heat exchanger (hereinafter, simply referred to as a heat exchanger) 1 of the first embodiment
  • FIG. 2 is an enlarged view showing a header region of the plate fin laminated heat exchanger.
  • a perspective view FIG. 3 is an enlarged sectional view showing a header region of the plate fin laminated heat exchanger
  • FIG. 4 is an enlarged sectional view of a main part of the header region of the plate fin laminated heat exchanger
  • FIG. 5 is FIG.
  • FIG. 6 is an enlarged cross-sectional view of the portion shown by A
  • FIG. 6 is an exploded perspective view of the plate fins of the plate fin laminated heat exchanger according to the first embodiment.
  • the heat exchanger 1 of the present embodiment includes an inflow pipe (inlet header) 2, a plate fin laminate 4 formed by laminating a plurality of plate fins 3, and a plate. It has an outflow pipe (outlet header) 5 for discharging the refrigerant flowing through the flow path in the fin 3.
  • the refrigerant which is the first fluid, flows into the inflow pipe (inlet header) 2.
  • the plurality of plate fins 3 have a rectangular plate shape.
  • End plates 6a and 6b are provided on both sides (upper side and lower side in FIG. 1) of the plate fin laminated body 4 in the laminating direction.
  • the shapes of the end plates 6a and 6b and the shapes of the plate fins 3 are substantially the same in plan view.
  • the end plates 6a and 6b are made of a rigid plate material, and are formed by grinding a metal material such as aluminum, an aluminum alloy, or stainless steel.
  • the end plates 6a and 6b and the plurality of plate fins 3 are joined and integrated by brazing in a laminated state.
  • the end plates 6a, 6b and the plurality of plate fins 3 may be joined by another heat-resistant fixing method, or may be joined by using, for example, a chemical joining member.
  • the plate fins 3 are connected and fixed at both ends in the longitudinal direction of the plate fin laminated body 4.
  • the configuration of connecting and fixing the plate fin laminated body 4 will be described later.
  • the plate fin 3 is configured by joining a pair of long plates 3a and 3b by brazing.
  • the pair of plates 3a and 3b have a concave groove serving as a flow path 7.
  • an inflow header flow path 9 and an outflow header flow path 10 connected to the flow path 7 via the connecting path 8 are formed.
  • the flow paths 7 provided in the plates 3a and 3b are arranged along the longitudinal direction of the plates 3a and 3b.
  • the flow path 7 is configured to make a U-turn at the ends of the plates 3a and 3b.
  • an inflow header flow path 9 connected to the outward flow path 7a and an outflow header flow path 10 connected to the return flow path 7b are collectively arranged.
  • a slit 11 is formed between the forward flow path 7a and the return flow path 7b to suppress heat transfer between the first fluid flowing through the forward flow path 7a and the first fluid flowing through the return flow path 7b.
  • the plate fin laminated body 4 is formed by laminating and brazing the plate fins 3 together with the end plates 6a and 6b.
  • the inflow pipe 2 and the outflow pipe 5 are connected to the inflow header flow path 9 and the outflow header flow path 10 of the plate fin laminated body 4, respectively.
  • a through hole 12 is provided at the peripheral edge of the header region X where the inflow header flow path 9 and the outflow header flow path 10 of the plate fin 3 are located (for example, FIG. 3 and FIG. 6).
  • the tubular portion 13 is erected and arranged in the portions of the pair of plates 3a and 3b provided with the through holes 12.
  • the through hole 12 is arranged inside the wall surface constituting the tubular portion 13.
  • the tubular portion 13 is arranged so as to project outward from each of the pair of plates 3a and 3b.
  • the tubular portion 13 is fitted with the tubular portion 13 of another plate fin 3 adjacent in the stacking direction.
  • the header regions X (see FIG. 1 and the like) of the adjacent plate fins 3 are connected and fixed to each other.
  • the tubular portion 13 is formed so as to project on a surface opposite to the brazed surface of the plates 3a and 3b to which the brazing material is previously applied.
  • the tubular portions 13 of the adjacent plate fins 3 are fitted to each other, and the brazed material on the brazed surface of the inner peripheral surface of one of the tubular portions 13 is melted and solidified to integrate the tubular portions 13 with each other.
  • the header region X of the plate fin laminated body 4 formed by laminating the plate fins 3 of the above is connected and fixed.
  • a similar through hole 12 is provided at the end of each plate fin 3 on the opposite side of the header region X, and a tubular portion 13 is formed. By fitting and brazing the tubular portions 13, the end portions of the plate fin laminated body 4 formed by laminating the plate fins 3 are connected and fixed.
  • the tubular portion 13 erected in the through hole 12 is arranged so as to surround the inflow header flow path 9 or the outflow header flow path 10.
  • each tubular portion 13 is provided on a line connecting substantially the centers of the inflow header flow path 9 and the outflow header flow path 10.
  • the tubular portion 13 is provided so that at least a part of the outer periphery of the tubular portion 13 overlaps on a line connecting substantially the centers of the outflow header flow path 10 and the outflow header flow path 10.
  • the fitting clearance between the tubular portions 13 of the adjacent plate fins 3 is 0.2 mm or less, preferably 0.2 mm to 0.1 mm.
  • At least one of the tubular portions 13 to be fitted is the tubular portion 13, and in the example shown in FIG. 6, the tubular portion 13 of the upper plate 3a of the pair of plates 3a and 3b. Is formed in the shape of a tapered tip.
  • a gas-liquid two-phase state refrigerant which is the first fluid is introduced from the inflow pipe 2 to the plate fin laminated body 4.
  • Inflow into the inflow header flow path 9 The refrigerant that has flowed into the inflow header flow path 9 flows to the outbound flow path 7a group via the connecting path 8 of each plate fin 3.
  • the refrigerant flowing through the forward flow path 7a group of each plate fin 3 makes a U-turn and flows out from the outflow pipe 5 to the refrigerant circuit of the refrigeration system in the gas phase state through the return flow path 7b.
  • the refrigerant exchanges heat with the air (second fluid) that passes between the stacks of the plate fins 3 of the plate fin laminate 4 when flowing through the outbound flow path 7a.
  • the heat transfer between the refrigerant flowing in the forward flow path 7a group and the refrigerant flowing in the return flow path 7b is suppressed by the slit 11, so that high heat exchange efficiency is exhibited.
  • the heat exchanger 1 is used as a condenser, the flow of the first fluid is in the opposite direction to that when it is used as an evaporator. That is, the inflow pipe 2 and the inflow header flow path 9 are the outflow pipe and the outflow header flow path, respectively, and the outflow pipe 5 and the outflow header flow path 10 are the inflow pipe and the inflow header flow path, respectively.
  • the heat exchanger 1 of the present embodiment can be a highly reliable heat exchanger because the header region X portion is firmly connected and fixed to suppress the deformation of the header region X portion. ..
  • the cylinder portion 13 is provided in the header region X portion of each of the plates 3a and 3b forming the plate fins 3, respectively.
  • the tubular portions 13 of the adjacent plate fins 3 are fitted and brazed to each other.
  • the header region X portions of the adjacent plate fins 3 are connected and fixed to each other.
  • the tubular portions 13 of the adjacent plate fins 3 are fitted to each other, and the tubular portions 13 are connected in a columnar shape in the stacking direction. Further, since the cylinder portions 13 are joined to each other with a brazing material, the joining strength is further increased by the solidified brazing material, and a more robust fixing structure is obtained. Therefore, the connection strength of the header region portion can be greatly improved, the rigidity of the plate fin laminate can be improved, and a highly reliable heat exchanger can be obtained.
  • the configuration should be simplified as compared with the conventional heat exchanger using the reinforcing plate and bolts or the like. Can be done.
  • the header region X is connected only by inserting the guide pin jig into the through hole 12, laminating the plates 3a and 3b, putting them in the melting furnace as they are, and brazing them. Can be fixed. The man-hours required for assembling using reinforcing plates and bolts separately from the brazing work, which is required in the conventional configuration, can be reduced, and the workability at the time of manufacturing is greatly improved. Therefore, the productivity of the heat exchanger is greatly improved.
  • the tubular portion 13 is arranged so as to surround each of the inflow header flow path 9 and the outflow header flow path 10. Therefore, even if a high pressure is applied around the inflow header flow path 9 and the outflow header flow path 10 of each of the plates 3a and 3b, that is, in the header region X portion due to the concentrated flow of many first fluids, the inflow occurs.
  • the pressure resistance around the header flow path 9 and the pressure resistance around the outflow header flow path 10 can be improved substantially evenly to increase the pressure resistance of the entire header region X portion.
  • each cylinder portion 13 is provided so that at least the outer periphery of the cylinder portion 13 overlaps on a line connecting substantially the centers of the inflow header flow path 9 and the outflow header flow path 10. ing. Therefore, the header region X portion is connected by the tubular portion 13 in the vicinity of the line connecting the substantially centers of the inflow header flow path 9 and the outflow header flow path 10, and the pressure resistance of the header region X portion is more evenly distributed. Moreover, it can be surely improved and the deformation of the plate fin 3 can be prevented.
  • At least one of the tubular portions 13 provided on the pair of plates 3a and 3b is tapered.
  • the cylinders 13 are surely in contact with each other at least in a part thereof, so that the cylinders 13 can be surely fixed with the brazing material. Therefore, the connection strength of the header region X portion becomes strong, and the pressure resistance can be improved more reliably.
  • the fitting clearance between the tubular portions 13 to be fitted is set to 0.2 mm or less, and in the example of this embodiment, it is set to be in the range of 0.2 mm to 0.1 mm.
  • the molten wax material wraps around the entire circumference of the cylinders 13 substantially uniformly between the cylinders 13 and solidifies. Therefore, the strength of the joint portion between the tubular portions 13 including the brazing material is surely improved, and the pressure resistance of the header region X portion can be more reliably improved.
  • the first embodiment has been described as an example of the technique in the present disclosure.
  • the technique in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, etc. have been made. Further, it is also possible to combine the components described in the first embodiment to form a new embodiment.
  • the flow path 7 through which the first fluid flows is made a U-turn
  • the inflow header flow path 9 connected to the outward flow path 7a and the outflow flow path 7b connected to the return flow path 7b are on one end side of the plate fin 3.
  • An example is a heat exchanger having a configuration in which the header flow paths 10 are collectively provided.
  • the flow path 7 is arranged in a straight line without making a U-turn
  • the inflow header flow path 9 is provided on one end side of the plate fin 3
  • the outflow header flow path 10 is provided on the other end side of the plate fin 3. It may be provided.
  • a tubular portion 13 may be provided so as to surround the inflow header flow path 9 and the outflow header flow path 10, respectively, so that the plate fins 3 may be connected and fixed to each other.
  • the tubular portion 13 provided on the pair of plates 3a and 3b constituting the plate fin 3 has been described as a tubular portion having a circular cross section.
  • the cross-sectional shape of the tubular portion is not limited to a circle, and may be any shape such as a polygon such as a hexagon or an ellipse.
  • the tubular portion may be a tubular portion having a discontinuous wall surface with a cut, such as the tubular portion 13a provided in the middle of the slit 11 shown in FIG.
  • At least one of the tubular portions 13 of the adjacent plate fins 3 has a tapered shape.
  • the tubular portions 13 of the adjacent plate fins 3 may not be tapered.
  • both of the tubular portions 13 of the adjacent plate fins 3 may be tapered.
  • the taper angles of the two tubular portions 13 to be fitted are slightly different from each other.
  • the tip portion of one of the tubular portions 13 of the adjacent plate fins 3 may be nested.
  • the heat exchanger of the present disclosure is arranged so as to be laminated on both sides of the plate fin laminated body in which the plate fins having the flow path through which the first fluid such as the refrigerant flows are laminated and the plate fin laminated body.
  • the end plate is provided with an inflow header flow path and an outflow header flow path through which the first fluid flowing through the flow path of the plate fin laminate passes.
  • the second fluid flows between the stacks of the plate fins of the plate fin laminate, so that heat exchange is performed between the first fluid and the second fluid.
  • the plate fins are formed by joining a pair of plates by brazing, and a flow path is formed between the pair of plates.
  • a tubular portion is provided at an appropriate position on the peripheral edge of the header region portion of the plate fin provided with the inflow header flow path and the outflow header flow path connected to the flow path.
  • the tubular portions of adjacent plate fins are fitted to each other.
  • the tubular portions of the adjacent plate fins are brazed to each other, and the header region is connected and fixed.
  • connection strength of the header region portion can be improved with a simple configuration without using a reinforcing plate, bolts, etc., and the rigidity of the plate fin laminate can be improved, and a highly reliable heat exchanger can be obtained. be able to.
  • the cylinder portion is provided so as to surround the inflow header flow path and the outflow header flow path. This makes it possible to more reliably improve the pressure resistance of the header region portion.
  • At least one of the cylinders provided on the pair of plates has a tapered or nesting shape. As a result, the bonding between the cylinder portions becomes more reliable, and the pressure resistance of the header region portion can be improved more reliably.
  • the fitting clearance between the tubular portions arranged on the adjacent plate fins and mating with each other is 0.2 mm or less. As a result, the bonding between the cylinder portions becomes more reliable, and the pressure resistance of the header region portion can be further reliably improved.
  • the heat exchanger of the present disclosure can be a highly reliable heat exchanger by improving the connection strength of the header region portion of the plate fins and improving the rigidity of the plate fin laminate with a simple configuration. Therefore, it can be widely used in heat exchangers and various refrigeration equipment used for home and commercial air conditioners, and has great industrial value.

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

Abstract

La présente invention concerne un échangeur de chaleur comprenant un empilement d'ailettes (4) créé en empilant des ailettes (3) dont chacune est dotée d'un trajet d'écoulement pour l'écoulement d'un premier fluide tel qu'un fluide frigorigène. Chaque ailette (3) comprend une paire de plaques brasées et le trajet d'écoulement est formé entre la paire de plaques. Une partie cylindrique (13) qui fait saillie vers l'extérieur de chaque paire de plaques est disposée au niveau d'une partie X de région de collecteur qui est reliée au trajet d'écoulement de l'ailette (3). Les parties cylindriques (13) des ailettes (3) adjacentes sont mises en prise et brasées pour relier et solidariser les parties X de région de collecteur des ailettes (3) adjacentes.
PCT/JP2021/004504 2020-06-02 2021-02-08 Échangeur de chaleur WO2021245986A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21817911.7A EP4160130A4 (fr) 2020-06-02 2021-02-08 Échangeur de chaleur
CN202180038894.1A CN115885150A (zh) 2020-06-02 2021-02-08 热交换器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-095828 2020-06-02
JP2020095828A JP7538991B2 (ja) 2020-06-02 2020-06-02 熱交換器

Publications (1)

Publication Number Publication Date
WO2021245986A1 true WO2021245986A1 (fr) 2021-12-09

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JPH09280778A (ja) * 1996-04-16 1997-10-31 Showa Alum Corp 積層型熱交換器
JP2005326072A (ja) * 2004-05-13 2005-11-24 Hisaka Works Ltd プレート式熱交換器
US10408543B2 (en) * 2015-05-01 2019-09-10 Modine Manufacturing Company Liquid to refrigerant heat exchanger, and method of operating the same

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CN115885150A (zh) 2023-03-31
JP2021188844A (ja) 2021-12-13
EP4160130A1 (fr) 2023-04-05
JP7538991B2 (ja) 2024-08-23

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