CN208579665U - 热交换器以及具备该热交换器的空调机 - Google Patents

热交换器以及具备该热交换器的空调机 Download PDF

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CN208579665U
CN208579665U CN201590001651.0U CN201590001651U CN208579665U CN 208579665 U CN208579665 U CN 208579665U CN 201590001651 U CN201590001651 U CN 201590001651U CN 208579665 U CN208579665 U CN 208579665U
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heat exchanger
flat tube
tube
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bend
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川端亮平
谷川司
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Mitsubishi Electric Corp
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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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F28D1/0478—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/06—Solder feeding devices; Solder melting pans
    • 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
    • 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
    • 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
    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0471—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 bent, e.g. in a serpentine or zig-zag the conduits having a non-circular cross-section
    • 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
    • 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
    • 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
    • F28F1/325—Fins with openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/14—Heat exchangers
    • 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
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  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
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Abstract

本实用新型涉及热交换器以及具备该热交换器的空调机，所述热交换器具有：剖面为扁平形状的多个扁平管、和剖面为扁平形状且外观为U字形状的多个扁平管U形弯管头，将扁平管沿固定方向设置多层而形成的扁平管列，在与固定方向交叉的方向上配置有多列，并且多列扁平管彼此配置成交错状，在跨越扁平管的各列的连结部分配置有扁平管U形弯管头，扁平管U形弯管头被扭转成：该U形弯管头的两端部的扁平剖面的长轴成为与和该两端部连接的扁平管的扁平剖面的长轴的方向相同的方向。

Description

热交换器以及具备该热交换器的空调机
技术领域
本实用新型涉及在跨越供流体在内部流动的扁平管的列的连结部设置有扁平管U形弯管头的热交换器、具备该热交换器的空调机以及扁平管 U形弯管头的制造方法。
背景技术
在制冷装置、空调装置或热泵中使用的热交换器，一般以使传热管贯通于具有间隔地并排设置的多个翅片的方式构成。传热管在与空气流交叉的方向上并设有多层，由该多层构成的传热管的列沿着空气流动方向配置有多列。在传热管的内部通常流动有制冷剂，热交换器成为制冷剂回路的一部分。
在上述的热交换器中，使用剖面为扁平形状的扁平管作为传热管，在跨越多列扁平管的列的彼此的连结部分、或多层扁平管的彼此的连结部分具备U形弯管头。例如存在如下的热交换器，即：使用一方的端部的剖面为扁平形状、另一方的端部的剖面为圆形状的接头，扁平管彼此的连接经由进行剖面形状的变换的接头、和由将该接头的圆形状部彼此连接的分体的圆管构成的U形弯管头(以下称为“圆管U形弯管头”)来进行(例如参照专利文献1)。
另外，还存在如下的热交换器，即：不使用上述那样的接头，而使用将圆管U形弯管头的两端部加工成扁平形状并将圆管部与扁平形状部一体化的连接管，将扁平管彼此连接(例如参照专利文献2)。
另外，还存在如下的热交换器，即：使用剖面一律为扁平管形状的连接用扁平管，将不同列的相同高度的扁平管彼此连接(例如参照专利文献 3)。
此外，还存在如下的热交换器，即：将使用扁平管的两列构造的热交换单元的跨越水平地配置的扁平管的列的彼此的连结部分，用U字型的连接管连结的结构中，连接管通过将弯曲成U字形的圆管的两端成为扁平的方式制成，连接管的两端部由在内周面粘贴有焊料的包覆件构成，连接管与扁平管通过焊接而接合(例如参照专利文献4)。
专利文献1：日本特开2012-32089号公报([0011]段，图2～图4)
专利文献2：日本特开2012-82986号公报([0022]段，图1、图6)
专利文献3：日本特开2015-55410号公报([0142]、[0143]段，图 13、图14)
专利文献4：日本特开2015-55413号公报([0115]、[0116]、[0118] 段，图11、图12)
然而，在成为扁平管彼此的连结部的端部分别连接接头，并经由接头与圆管U形弯管头连接的专利文献1的技术中，扁平管与接头的接合点数增加，产生制造不良的概率升高。此外还需要连接部件的材料费，因而存在成本提高的课题。
另外，在专利文献2的技术中，由于使扁平管彼此的连接部的接合点数减少，因此与上述专利文献1的技术相比，能够将产生制造不良的概率抑制为较低。然而在专利文献2的技术中，在扁平管彼此的连接部存在剖面为圆形的流路，因而产生因流路形状的变化引起的压力损失，从而性能变差。这样的因流路形状的变化引起的压力损失，能够通过延长从扁平形状部至圆管部为止的变换部的长度来抑制，但存在为了加长连接部而产生材料费的增加、其他部件配置的制约之类的课题。
另外，在专利文献3的技术中，若将连接用扁平管进行平面地折弯来制成，则折弯部的内R与外R之差增大。因此折弯时施加拉伸载荷的外R 部的壁厚较薄，耐压强度降低。另外存在弯曲R也增大的课题。
此外，在专利文献4的技术中，由于将扁平管插入至连接管的两端部的包覆层的内侧，因而包覆层的体积必须小于母材与扁平管的间隙。若焊料量相对于间隙较少，则存在成为焊接不良的原因、在连接管的外侧不能形成焊脚，从而难以通过外观目视确认焊接状态的课题。
实用新型内容
本实用新型是为了解决上述课题中的至少一个所做出的，主要目的在于：在具备跨越以交错状配置的多列扁平管的列的连结构造时，能够减少使用部件，并且能够抑制流路中的压力损失。
本实用新型的热交换器的一个方式，具有：剖面为扁平形状的多个扁平管、和剖面为扁平形状且外观为U字形状的多个扁平管U形弯管头，其中，将所述扁平管沿固定方向设置多层而形成的扁平管列，在与所述固定方向交叉的方向上配置多列，并且多列所述扁平管在所述固定方向上彼此配置成交错状，在跨越所述扁平管的各列的连结部分配置有所述扁平管 U形弯管头，所述扁平管U形弯管头被扭转成：该U形弯管头的两端部的扁平剖面的长轴成为与和该两端部连接的所述扁平管的扁平剖面的长轴的方向相同的方向，所述扁平管U形弯管头的所述两端部相对于其他部分扭转。
优选地，在所述扁平管U形弯管头与所述扁平管的接合部夹装有焊料。
优选地，所述扁平管所贯通的多个翅片平行地配置。
优选地，所述扁平管的内部被划分成多个流路。
本实用新型的空调机至少具有压缩机、室外热交换器、减压器以及室内热交换器，并且通过制冷剂配管将它们连接为环状，其中，所述空调机具备权利要求1～5中的任一项所述的热交换器作为所述室外热交换器或所述室内热交换器。
本实用新型的一个方式的热交换器，多列扁平管配置成交错状，在跨越扁平管各列的连结部分配置的扁平管U形弯管头被扭转成：至少其两端部的扁平剖面的长轴方向和与之连接的扁平管的扁平剖面的长轴方向一致，因而流路的剖面形状一律成为扁平形状，而无需变换流路的剖面形状的接头部件。另外，由于扁平管U形弯管头的两端部的方向平滑地转换，因而能够抑制流路中的压力损失。
附图说明
图1是表示本实用新型的实施方式1的热交换器的整体结构的立体图。
图2是本实用新型的实施方式1的热交换器的扁平管的剖视图。
图3是本实用新型的实施方式1的热交换器的扁平管U形弯管头的立体图。
图4是图3的扁平管U形弯管头的主视图。
图5(a)、图5(b)、图5(c)是表示本实用新型的实施方式1的热交换器的扁平管U形弯管头的制造方法的工序图。
图6是表示本实用新型的实施方式2的热交换器的扁平管U形弯管头的端部内侧的环状焊料压紧部的一个例子的示意图。
图7是表示本实用新型的实施方式2的热交换器的扁平管U形弯管头的端部内侧的环状焊料压紧部的一个例子的示意图。
图8(a)、图8(b)、图8(c)是表示本实用新型的实施方式3的热交换器的扁平管U形弯管头的制造方法的工序图。
图9是本实用新型的实施方式4的空调机的制冷剂回路图。
图10是表示本实用新型的实施方式1的热交换器的其他方式的立体图。
具体实施方式
实施方式1.
图1是表示本实用新型的实施方式1的热交换器的整体结构的立体图。图2是本实用新型的实施方式1的热交换器的扁平管的剖视图。
如图1所示，实施方式1的热交换器20具备：作为传热管的扁平管 1、和为了提高热交换效率而配置于扁平管1的周围的翅片2。扁平管1 如图2所示，与管轴正交的方向的剖面为扁平形状，内部被划分成多个流路1a。由此扁平管1能够获得整流效果，进一步提高热交换效率。翅片2 具有间隔地并排设置有多个，由扁平管1贯通。
扁平管1沿着与空气流交叉的一定的方向并设有多层，不连接接头的一侧(图1的右侧)的端部被折弯成发夹状。而且，由该多层构成的扁平管1的列，沿着空气流动方向配置多列。另外，相邻的列的扁平管在上述固定方向、即层方向上配置成交错状。即，对于多列扁平管1而言，需要该接头的一侧(图1的左侧)的彼此的端部的位置，以在与空气流交叉的方向上错开的方式配置成交错状。而且，跨越多列扁平管1的列的彼此的连结部分用扁平管U形弯管头3接合。
图3是表示本实用新型的实施方式1的热交换器的扁平管U形弯管头的立体图。图4是图3的扁平管U形弯管头的主视图。
如图3以及图4所示，扁平管U形弯管头3具备：外观为U字形状的主体部6、和成为与扁平管1接合的接合部的端部5。扁平管U形弯管头3的剖面一律成为扁平形状，但供连接对象的扁平管1插入的端部5被进行扩管加工。
若对此进行进一步详述，则扁平管U形弯管头3被扭转成：在沿着其扁平剖面的长轴的同一平面X内形成为U字形状，并且扁平管U形弯管头3的至少两端部5的扁平剖面的长轴方向与作为连接对象的扁平管1 的扁平剖面的长轴方向一致。扭转角度θ由接合对象的扁平管1的配置决定。
另外，扁平管U形弯管头3与扁平管1的接合部通过焊接被牢固地固定。
接下来，基于图5(a)～图5(c)并一边参照图1～图4、一边对实施方式1的扁平管U形弯管头3的制造方法进行说明。图5(a)～图5(c) 是表示本实用新型的实施方式1的热交换器的扁平管U形弯管头的制造方法的工序图。扁平管U形弯管头3制造成能够架设在配置成交错状的连接对象的扁平管1之间。
首先，在同一平面X内折弯成U字形，制成圆管U形弯管头30A(图5(a))。接下来，沿管径方向对圆管U形弯管头30A整体进行压缩，以便圆管U形弯管头30A的剖面形状成为扁平形状，从而制成扁平管U形弯管头3(图5(b))。然后，将扁平管U形弯管头3的两端部5扭转成：使其各扁平剖面的长轴方向与连接对象的扁平管1的各扁平剖面的长轴方向一致，进而对该两端部5进行扩管，制造扁平管U形弯管头3(图5 (c))。
如上述那样制造的扁平管U形弯管头3，通过焊接将扁平管U形弯管头3的两端部5与配置成交错状的扁平管1接合，获得图1的热交换器。
这样，实施方式1的热交换器20被扭转成：扁平管U形弯管头3的成为接合部的两端部5的扁平剖面的长轴方向与交错配置的应该连接的扁平管1的扁平剖面的长轴方向一致。因此实施方式1的热交换器20的流路的剖面形状一律成为扁平形状，而无需变换流路的剖面形状的接头部件。另外，能够平滑地转换扁平管U形弯管头3的两端部的方向，能够抑制流路中的压力损失。
另外，为了使扁平剖面的长轴一致，可以扭转扁平管U形弯管头3 的两端部5，或者也可以扭转U字形状的主体部6。
另外，对于实施方式1的热交换器20而言，通过将由剖面为圆形状的圆形管构成的直管在同一平面X内折弯成U字形，并且沿径向对圆管 U形弯管头30A整体进行压缩来制成扁平管U形弯管头3。因此能够缩小弯曲成U字形时的弯曲R，并且不需要制造挤压模。
以上，在此列举扁平管1的列为两列的结构为例进行了说明。然而，即便是相互配置成交错状的扁平管1的列为三列以上的图10所示的热交换器，也能够利用扁平管U形弯管头3获得同样的效果。
实施方式2.
图6是表示本实用新型的实施方式2的热交换器的扁平管U形弯管头的端部内侧的环状焊料压紧部的一个例子的示意图。
实施方式2的热交换器20如图6所示，在扁平管U形弯管头3的端部5扩管时，在端部5的内部配置环状焊料4并一起进行扩管，从而将环状焊料4压紧于两端部5的内壁面，然后，将连接对象的扁平管1插入至端部5内，并在该状态下投入至炉中，从而将使得扁平管1与扁平管U形弯管头3焊接接合。
这样，在实施方式2的热交换器20中，在扁平管U形弯管头3的端部5扩管时，在端部5的内部配置环状焊料4，并对它们一起进行扩管，从而将环状焊料4压紧于两端部的内部。因此当在扁平管U形弯管头3 的两端部5插入扁平管1时，能够省略在它们之间插入焊料的工序。
图7是表示本实用新型的实施方式2的热交换器的扁平管U形弯管头的端部内侧的环状焊料压紧部的一个例子的示意图。
在此，当在扁平管U形弯管头3的端部5的内部压紧环状焊料4时，以使环状焊料4从前端部向外部突出的方式压紧。
这样，通过以使环状焊料4从端部5向外部突出的方式压紧，从而能够借助环状焊料4的从端部5突出的突出部8，在焊接后形成外凸缘 (fillet)，从而能够提高外观检查的作业性。
实施方式3.
接下来，基于图8(a)～图8(c)并一边参照图1～图4、一边对本实用新型的实施方式3的热交换器的制造方法进行说明。图8(a)～图8(c) 是表示本实用新型的实施方式3的交换器的扁平管U形弯管头的制造方法的工序图。另外，省略管内部的流路的图示。
热交换器20的制造，首先，将具有最终形状能够成为扩管后的尺寸的剖面的圆形的直管，以能够架设于配置成交错状的连接对象的扁平管1 间的方式在同一平面X内折弯成U字形，制成圆管U形弯管头30A(图8(a))。接下来，沿管径方向对圆管U形弯管头30A整体进行压缩，以便圆管U形弯管头30A的剖面形状成为扁平形状，制成扁平管U形弯管头3(图8(b))。然后，为了能够与连接对象的扁平管1接合，而以使扁平管U形弯管头3的两端部5a的各扁平剖面的长轴方向与连接对象的扁平管1的各扁平剖面的长轴方向一致的方式，对扁平管U形弯管头3进行整体地扭转，使扁平管U形弯管头3成为最终形状(图8(c))。然后，通过焊接将圆管U形弯管头30A的端部5a与配置成交错状的扁平管1接合，获得图1的热交换器。
根据实施方式3的热交换器的制造方法，对由具有最终形状能够成为扩管后的尺寸的剖面的圆形状的圆形管构成的直管进行弯曲加工，制成圆管U形弯管头30A，然后，沿径向对圆管U形弯管头30A整体进行压缩，制成扁平管U形弯管头3，因而能够缩小弯曲成U字形时的弯曲R。另外，还能够省略扩管工序。
在扁平形状的剖面因扭转角度θ而变形的情况下，例如优选通过水压扩管等进行形状修正，以确保流路。
实施方式4.
图9表示本实用新型的实施方式4的空调机的制冷剂回路图，将在上述实施方式1中说明的热交换器20作为室外热交换器或室内热交换器使用。
对于该空调机而言，由制冷剂配管70将压缩机61、四通阀62、室外热交换器63、减压器64以及室内热交换器65连接为环状，并在室内机50与室外机60之间配置有阀68、69。另外，在室外热交换器63并设有室外送风机66，在室内热交换器65并设有室内送风机67。
在实施方式4的空调机中，在制冷运转时，低压低温的气体制冷剂被室外机60的压缩机61压缩为高温高压的气体制冷剂，并向四通阀62输送。然后，由制冷剂配管70从四通阀62引导至室外热交换器63。室外热交换器63在制冷剂与空气之间进行热交换，将冷凝热向室外释放。即，室外热交换器63作为冷凝器发挥作用。从室外热交换器63出来的高压的液体制冷剂借助减压器64而成为低压低温的气液二相制冷剂，并经由阀 69引导至室内机50的室内热交换器65。室内热交换器65在制冷剂与空气之间进行热交换，进行冷却室内的制冷运转。即，室内热交换器65作为蒸发器发挥作用。而且，低压低温的气体制冷剂经由阀68、四通阀62 引导至压缩机61，进行制冷剂循环运转。
在进行制热运转的情况下，切换四通阀62，使制冷剂的流动成为与制冷运转的情况相反的方向，由此室内热交换器65作为冷凝器发挥作用，室外热交换器63作为蒸发器发挥作用。除此以外与制冷运转的情况同样。
根据实施方式4的空调器，由于使用实施方式1的热交换器20作为室外热交换器63或室内热交换器65，因而制造变得容易，能够削减空调机的制造成本。
附图标记说明：1…扁平管；1a…流路；2…翅片；3…扁平管U形弯管头；4…环状焊料；5、5a…扁平管U形弯管头的端部；6…扁平管U形弯管头的主体部；8…环状焊料的突出部；20…热交换器；30A…圆管U 形弯管头；50…室内机；60…室外机；61…压缩机；62…四通阀；63…室外热交换器；64…减压器；65…室内热交换器；66…室外送风机；67…室内送风机；68…阀；69…阀；70…制冷剂配管；X…同一平面；θ…扭转角度。

Claims (6)

1.一种热交换器，具有：剖面为扁平形状的多个扁平管、和剖面为扁平形状且外观为U字形状的多个扁平管U形弯管头，
所述热交换器的特征在于，
将所述扁平管沿固定方向设置多层而形成的扁平管列，沿与所述固定方向交叉的方向配置多列，并且多列所述扁平管在所述固定方向上相互配置成交错状，
在跨越所述扁平管的各列的连结部分配置有所述扁平管U形弯管头，
所述扁平管U形弯管头被扭转成：使该U形弯管头的两端部的扁平剖面的长轴成为与和该两端部连接的所述扁平管的扁平剖面的长轴的方向相同的方向，
所述扁平管U形弯管头的所述两端部相对于其他部分扭转。
2.根据权利要求1所述的热交换器，其特征在于，
在所述扁平管U形弯管头与所述扁平管的接合部夹装有焊料。
3.根据权利要求1或2所述的热交换器，其特征在于，
所述扁平管所贯通的多个翅片平行地配置。
4.根据权利要求1或2所述的热交换器，其特征在于，
所述扁平管的内部被划分成多个流路。
5.根据权利要求3所述的热交换器，其特征在于，
所述扁平管的内部被划分成多个流路。
6.一种空调机，至少具有压缩机、室外热交换器、减压器以及室内热交换器，并且通过制冷剂配管将它们连接为环状，其特征在于，
所述空调机具备权利要求1～5中的任一项所述的热交换器作为所述室外热交换器或所述室内热交换器。
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US10054376B2 (en) * 2013-10-29 2018-08-21 Mitsubishi Electric Corporation Heat exchanger and air-conditioning apparatus

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CN114270127A (zh) * 2019-08-14 2022-04-01 Lg电子株式会社 热交换器以及包括所述热交换器的家电产品的制造方法
CN114270127B (zh) * 2019-08-14 2023-07-07 Lg电子株式会社 热交换器以及包括所述热交换器的家电产品的制造方法
US11913163B2 (en) 2019-08-14 2024-02-27 Lg Electronics Inc. Heat exchanger and manufacturing method of home appliance including the heat exchanger
WO2022262562A1 (zh) * 2021-06-17 2022-12-22 浙江盾安人工环境股份有限公司 换热器
WO2023078399A1 (zh) * 2021-11-04 2023-05-11 浙江盾安人工环境股份有限公司 微通道换热器

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