WO2023036279A1 - 换热器及微通道换热器 - Google Patents

换热器及微通道换热器 Download PDF

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Publication number
WO2023036279A1
WO2023036279A1 PCT/CN2022/117993 CN2022117993W WO2023036279A1 WO 2023036279 A1 WO2023036279 A1 WO 2023036279A1 CN 2022117993 W CN2022117993 W CN 2022117993W WO 2023036279 A1 WO2023036279 A1 WO 2023036279A1
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WO
WIPO (PCT)
Prior art keywords
tube
pipe
sections
heat exchanger
heat exchange
Prior art date
Application number
PCT/CN2022/117993
Other languages
English (en)
French (fr)
Inventor
王冠军
魏文建
Original Assignee
浙江盾安人工环境股份有限公司
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
Priority claimed from CN202122214879.8U external-priority patent/CN216159683U/zh
Priority claimed from CN202122371894.3U external-priority patent/CN215984072U/zh
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to KR1020247005876A priority Critical patent/KR20240038759A/ko
Publication of WO2023036279A1 publication Critical patent/WO2023036279A1/zh
Priority to US18/602,063 priority patent/US20240210122A1/en

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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
    • F28D1/0471—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
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • F28D1/047—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
    • F28D1/0475—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 single U-bend
    • 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
    • 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
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels

Definitions

  • the present application relates to the technical field of heat exchangers, in particular, to a heat exchanger and a microchannel heat exchanger.
  • a plurality of heat exchange tubes of the heat exchanger are usually bent to obtain a larger heat exchange area in a limited space.
  • bent heat exchange tubes two adjacent heat exchange tubes are usually arranged at intervals, which is not conducive to the heat exchange of the heat exchanger.
  • a heat exchanger and a microchannel heat exchanger are provided.
  • the present application provides a heat exchanger, which includes: a plurality of heat exchange tubes arranged in sequence along a predetermined direction, each heat exchange tube is a flat tube and includes a first tube section and a second tube section connected to each other; wherein, the plurality of A first pipe section has a preset bending line, and the preset bending line is perpendicular to the central axes of multiple first pipe sections; the plane where the flat side of each first pipe section is located and the plane where the flat side of the corresponding second pipe section is located An included angle is set between them, so that the first tube segments of any two adjacent heat exchange tubes are in contact after the multiple first tube segments are bent along the preset bending line.
  • the value range of the included angle between the plane where the flat side of each first pipe section is located and the plane where the flat side of the corresponding second pipe section is located is greater than Or equal to 55 degrees and less than 85 degrees.
  • the flat sides of the plurality of first pipe segments are parallel.
  • each heat exchange tube includes two second tube sections, and the two second tube sections are respectively connected to two ends of the first tube section.
  • the two second tube sections of each heat exchange tube are respectively a third tube section and a fourth tube section, and the flat sides of the multiple third tube sections are all parallel; and/or, the flat sides of the multiple fourth tube sections are parallel. Parallel; and/or, when the multiple first pipe segments are bent, the plane where the central axes of the multiple third pipe segments is located and the plane where the central axes of the multiple fourth pipe segments are located are parallel or at an included angle.
  • a twisted pipe section is arranged between the first pipe section and the second pipe section of each heat exchange tube to connect the first pipe section and the second pipe section.
  • the sum of the length of the first pipe section and the horizontal lengths of the two twisted pipe sections is S;
  • the width of the flat surface of the heat exchange tube is W, 3W ⁇ S ⁇ 8W.
  • fin structures are arranged between any two adjacent second pipe sections, and each fin structure is arranged on one of the corresponding two adjacent second pipe sections.
  • the heat exchanger further includes a header, the header extends along a preset direction, and a plurality of second pipe sections are connected and communicated with the header.
  • each heat exchange tube is integrally formed.
  • the first pipe section is located between two sections of the second pipe section; a twisted pipe section is provided between the first pipe section and the second pipe section to connect the first pipe section and the The second pipe section, the twisted pipe section includes two sections of twisted parts that are respectively connected to the two sections of the second pipe section and twisted by a preset angle relative to the corresponding second pipe section, and are located between the two sections of the twisted section for a predetermined
  • a bending portion with a bending radius is set; along the preset direction, a plurality of heat exchange tubes are inserted back and forth at the first pipe section, and each of the twisted pipe sections is formed at the bending portion
  • the length L 2 of the twisted portion satisfies the following relationship: 1.05 T ⁇ L 2 ⁇ 1.25T, wherein: T is the width of the heat exchange tube.
  • the blank length L of the first pipe segment before processing satisfies 6t ⁇ (180- ⁇ )+2.2T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+2.5T.
  • the length L 2 of the twisted portion satisfies the following relationship: 1.5 T ⁇ L 2 ⁇ 3.5T, wherein: T is the width of the heat exchange tube.
  • the blank length L of the first pipe segment before processing satisfies 6t ⁇ (180- ⁇ )+3.1T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+7T.
  • an angle ⁇ at which the twisted portion is twisted relative to the second pipe segment satisfies 50° ⁇ 90°.
  • the tube thickness at the bending portion is t 1 , and the distance between t 1 and t satisfies 0.95t ⁇ t 1 ⁇ t.
  • two adjacent heat exchange tubes that are in front-to-rear contact abut internally and externally at the first tube section.
  • the heat exchanger further includes a fin structure, and the fin structure is interposed between the second tube sections of the adjacent heat exchange tubes.
  • the present application also provides a microchannel heat exchanger, comprising a plurality of heat exchange tubes arranged in a predetermined direction, each of the heat exchange tubes includes two second tube sections and two sections of the second tube section The first pipe section between them; the first pipe section includes two sections of torsion parts that are respectively connected to the two sections of the second pipe section and are twisted to a preset angle relative to the corresponding second section of the pipe section, and are located at the two sections of the torsion section
  • the bending part is bent with a preset bending radius; along the preset direction, a plurality of the heat exchange tubes are inserted back and forth at the first pipe section, and each of the first pipe sections A front arc with a radius of R and a rear arc with a radius of r are formed at the bending portion, wherein: R>r, and 5.5t ⁇ r ⁇ 25t, t is the second pipe section of the heat exchange tube Tube thickness.
  • the length L 2 of the twisted portion satisfies the following relationship: 1.05 T ⁇ L 2 ⁇ 1.25T, wherein: T is the width of the heat exchange tube.
  • the blank length L of the first pipe segment before processing satisfies 6t ⁇ (180- ⁇ )+2.2T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+2.5T.
  • the length L 2 of the twisted portion satisfies the following relationship: 1.5 T ⁇ L 2 ⁇ 3.5T, wherein: T is the width of the heat exchange tube.
  • the blank length L of the first pipe segment before processing satisfies 6t ⁇ (180- ⁇ )+3.1T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+7T.
  • an angle ⁇ at which the twisted portion is twisted relative to the second pipe segment satisfies 50° ⁇ 90°.
  • the tube thickness at the bending portion is t 1 , and the distance between t 1 and t satisfies 0.95t ⁇ t 1 ⁇ t.
  • two adjacent heat exchange tubes plugged in front and back are abutted inside and outside at the first tube section.
  • the heat exchanger further includes a fin structure, and the fin structure is interposed between the second tube sections of the adjacent heat exchange tubes.
  • Fig. 1 shows a schematic structural view of a plurality of heat exchange tubes of a heat exchanger before bending according to one or more embodiments.
  • Fig. 2 shows a schematic structural view of the plurality of heat exchange tubes of the heat exchanger in Fig. 1 after being bent.
  • FIG. 3 shows another structural schematic view of the multiple heat exchange tubes of the heat exchanger in FIG. 1 after being bent.
  • FIG. 4 shows a schematic structural diagram of the heat exchanger in FIG. 1 without the fin structure.
  • FIG. 5 shows a schematic structural diagram of a heat exchange tube of the heat exchanger in FIG. 1 before being bent.
  • Fig. 6 is a schematic structural diagram of a heat exchanger according to one or more embodiments.
  • Fig. 7 is a schematic diagram of a partial structure of the heat exchange tube in the heat exchanger of Fig. 6 .
  • FIG. 8 is another perspective view of the heat exchange tube shown in FIG. 7 .
  • Heat exchanger/microchannel heat exchanger 10. Heat exchange tube; 11. First pipe section; 11A. Preset bending line; 12. Second pipe section; 121. Third pipe section; 122. Fourth pipe section; 13. Twisted pipe section; 111. Twisted part; 112. Bending part; 112A. Front side arc; 112B. Back side arc; 20. Collector; 21. First collector; 22. Second collector tube; 30, fin structure.
  • a component when a component is said to be “mounted on” another component, it may be directly mounted on another component or there may be an intervening component.
  • a component When a component is said to be “set on” another component, it may be set directly on the other component or there may be an intervening component at the same time.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may be an intervening component at the same time.
  • the present application provides a heat exchanger 100. Please refer to FIG. 1 to FIG. Connected first pipe section 11 and second pipe section 12; wherein, multiple first pipe sections 11 have preset bending lines 11A, and preset bending lines 11A are perpendicular to the central axes of multiple first pipe sections 11; each first The plane where the flat side of the pipe section 11 is located and the plane where the flat side of the corresponding second pipe section 12 is located form an included angle, so that after bending a plurality of first pipe sections 11 along the preset bending line 11A, any relative The first tube sections 11 of the two adjacent heat exchange tubes 10 are in contact.
  • each first pipe section 11 is perpendicular to its thickness direction; each first pipe section 11 has a bending line, and the bending line of each first pipe section 11 is perpendicular to its central axis; overlap to form the preset bending line 11A.
  • the flat tube when the flat tube is a rectangular flat tube, the flat tube has four sides, the lengths of the four sides are all equal, and the two opposite sides with larger widths are the flat sides of the flat tube, and the width is wider.
  • the distribution direction of the two large opposite sides is parallel to the thickness direction of the flat tube.
  • each first pipe section 11 is twisted at a certain angle relative to the corresponding second pipe section 12, so that the plane where the flat side of each first pipe section 11 is located is the same as the plane where the flat side of the corresponding second pipe section 12 is located. There is an included angle between them, so that after bending a plurality of first pipe sections 11 along the preset bending line 11A, the first pipe sections 11 of any two adjacent heat exchange tubes 10 can contact each other. It can enhance the heat exchange effect between two adjacent first pipe sections 11, further enhance the heat exchange effect between two adjacent heat exchange pipes 10, further enhance the heat exchange effect of the heat exchanger 100, and solve the problems in the related art The heat exchange effect of the heat exchanger 100 is poor.
  • each heat exchange tube 10 is integrally formed to facilitate the installation and processing of the heat exchanger 100 .
  • the predetermined direction is the extension direction of the predetermined straight line, that is, the plurality of heat exchange tubes 10 are sequentially arranged along the extension direction of the predetermined straight line, The extending direction of each heat exchange tube 10 is perpendicular to the preset direction.
  • the flat sides of the plurality of second pipe segments 12 are all parallel.
  • the value of the included angle between the plane where the flat side of each first pipe section 11 is located and the plane where the flat side of the corresponding second pipe section 12 is located The range is greater than or equal to 55 degrees and less than 85 degrees, so as to ensure contact between any two adjacent first pipe segments 11 after the multiple first pipe segments 11 are bent. That is, the twist angle of each first pipe section 11 relative to the corresponding second pipe section 12 is greater than or equal to 55 degrees and less than 85 degrees.
  • the flat sides of the plurality of first pipe segments 11 are parallel, that is, the plane where the flat sides of each first pipe segment 11 is located is the same as the flat side of the corresponding second pipe segment 12.
  • the included angles between the planes where the side surfaces are located are all equal, and the torsion angles of the plurality of first pipe sections 11 are all equal.
  • each first pipe section 11 means that the first pipe section 11 and the second pipe section 12 belong to the same heat exchange tube 10 .
  • each heat exchange tube 10 includes two second tube sections 12, and the two second tube sections 12 are respectively connected to both ends of the first tube section 11; the two second tube sections 12 of each heat exchange tube 10 are respectively These are the third pipe section 121 and the fourth pipe section 122 .
  • the flat sides of the plurality of third pipe sections 121 are all parallel, and the flat sides of the plurality of fourth pipe sections 122 are all parallel;
  • the multiple fourth pipe sections 122 are located at the same end of the multiple first pipe sections 11.
  • a twisted tube section 13 is provided between the first tube section 11 and the second tube section 12 of each heat exchange tube 10 to connect the first tube section 11 and the second tube section 12 .
  • the twisted tube section 13 of the heat exchange tube 10 is twisted so that the first tube section 11 of the heat exchange tube 10
  • the plane where the flat side is located and the plane where the flat side of the second pipe section 12 is located form an included angle.
  • each heat exchange tube 10 includes two twisted tube sections 13, one twisted tube section 13 is arranged between the first tube section 11 and the third tube section 121 to connect the first tube section 11 and the third tube section 121; the other twisted tube section 13 Set between the first pipe section 11 and the fourth pipe section 122 to connect the first pipe section 11 and the fourth pipe section 122, the arrangement of the two twisted pipe sections 13 transitionally connects the first pipe section 11 and the third pipe section 121 and the first pipe section 11 and the fourth tube section 122, effectively preventing the heat exchange tube 10 from being broken due to excessive twisting.
  • the fin structure 30 is arranged on the second pipe section 12, and the fin structure is not provided on the first pipe section 11 and the twisted pipe section 13, that is, the first pipe section 11 and the twisted pipe section 13 are all finless sections, if If the finless section is too long, the effective heat exchange area of the heat exchanger 100 will be reduced.
  • the horizontal length of the twisted pipe section 13 refers to the horizontal distance between the two ends of the twisted pipe section 13 in the extending direction of the first pipe section 11 .
  • each first pipe segment 11 is twisted relative to the second pipe segment 12 , the extension direction of each first pipe segment 11 is the same as the extension direction of the corresponding second pipe segment 12 .
  • fin structures 30 are arranged between any two adjacent second pipe sections 12 , and each fin structure 30 is arranged on one of the corresponding two adjacent second pipe sections 12 in one of the second pipe sections 12 superior.
  • each fin structure 30 is arranged on the flat side of the corresponding second pipe section 12 .
  • the heat exchanger 100 further includes a header 20 , the header 20 is extended along a preset direction, and a plurality of second pipe sections 12 are connected and communicated with the header 20 .
  • the header 20 includes a first header 21 and a second header 22, and the ends of the heat exchange tubes 10 at the ends of the two second tube sections 12 are respectively inserted and communicated with the first header 21 and the second header 22.
  • Second header 22 Second header 22.
  • the heat exchanger 100 includes a plurality of heat exchange tubes 10 arranged in sequence along a preset direction, and each heat exchange tube 10 is a flat tube and includes a first tube section 11 and a second tube section connected to each other.
  • Pipe section 12 wherein, a plurality of first pipe sections 11 have preset bending lines 11A, and the preset bending lines 11A are perpendicular to the central axes of a plurality of first pipe sections 11; the plane where the flat side of each first pipe section 11 is The planes where the flat sides of the corresponding second pipe sections 12 are located form an included angle, so that after bending a plurality of first pipe sections 11 along the preset bending line 11A, the first pipe sections 11 of any two adjacent heat exchange tubes 10 A pipe section 11 is in contact.
  • each first pipe section 11 is twisted at a certain angle relative to the corresponding second pipe section 12, so that the plane where the flat side of each first pipe section 11 is located is the same as the plane where the flat side of the corresponding second pipe section 12 is located. There is an included angle between them, so that after bending a plurality of first pipe sections 11 along the preset bending line 11A, the first pipe sections 11 of any two adjacent heat exchange tubes 10 can contact each other. It can enhance the heat exchange effect between two adjacent first pipe sections 11, further enhance the heat exchange effect between two adjacent heat exchange pipes 10, further enhance the heat exchange effect of the heat exchanger 100, and solve the problems in the related art The heat exchange effect of the heat exchanger 100 is poor.
  • the heat exchange tube 10 includes two second tube sections 12 and a first tube section 11 connected between the two second tube sections 12 .
  • a predetermined direction ie, the direction indicated by the arrow in FIG. 6
  • a plurality of heat exchange tubes 10 are inserted back and forth at the first tube section 11 . It can be understood that, along the direction indicated by the arrow in FIG. 6 , the rear part of the first tube section 11 of the front heat exchange tube 10 is inserted into the first tube section 11 of the adjacent rear side heat exchange tube 10 .
  • a twisted pipe section 13 is provided between the first pipe section 11 and the second pipe section 12 to connect the first pipe section 11 and the second pipe section 12 .
  • the twisted pipe section 13 includes two sections of twisted portion 111 respectively connected to the two sections of the second pipe section 12 and twisted at a preset angle relative to the corresponding second section 12, and located between the two sections of twisted section 111 to The bending portion 112 is bent with a preset bending radius.
  • a front arc portion 112A with a radius R and a rear arc portion 112B with a radius r are formed at the bending portion 112 of each first pipe section 11 .
  • the two adjacent heat exchange tubes 10 plugged in front and back can also abut inside and outside at the first tube section 11 (that is, at the plug-in position), so as to further improve the local strength of the heat exchanger 100, and at the same time reduce bending The air leakage situation at part 112 place.
  • R and r referred to here both refer to the radius inside the bent portion 112 of the heat exchange tube 10 in FIG. 8 .
  • the radius R of the front arc portion 112A is larger than the radius r of the rear arc portion 112B, that is, R>r. This is due to the fact that there are two deformations of torsion and bending at the first pipe section 11 of the microchannel heat exchange tube, which leads to the local deformation of the heat exchange tube 10 when bending with a preset bending radius. Torsional deformation, under the superposition of the two deformations, along the tube width direction of the heat exchange tube 10, one side edge of the bending portion 112 is deformed to be slightly larger than the preset bending radius, and the other side edge is deformed to be slightly larger than the preset bending radius. smaller than the preset bend radius.
  • t represents the tube thickness at the second tube section 12 , that is, the tube thickness of the heat exchange tube 10 in the blank state
  • T denotes the tube width of the heat exchange tube 10 .
  • the radius r of the rear arc portion 112B and the tube thickness t satisfy the following relationship: 5.5t ⁇ r ⁇ 25t.
  • the limit The minimum value of r is greater than or equal to 5.5 times the tube thickness t.
  • this part of the tube section of the heat exchange tube 10 does not participate in heat exchange when the heat exchanger 100 is working, although limiting the minimum value of r is beneficial to avoid internal
  • the microchannel is crushed and destroyed, but if r is increased without limit, the length of the first tube section 11 will increase, and accordingly, the length of the tubes in the heat exchange tube 10 that do not participate in heat exchange will increase, which is not conducive to the heat exchanger 100 overall heat exchange.
  • the heat exchange tube 10 has a unique deformation effect in torsion and bending due to its special internal microchannel structure, unlike regular tubes and plates. Deformation characteristics exhibited during torsion and bending.
  • the inventor found that the local deformation of the heat exchange tube 10 can be well controlled by controlling the relative multiple between the radius r of the rear arc portion 112B and the tube thickness t.
  • 1 ⁇ R/r ⁇ 1.2 1 ⁇ R/r ⁇ 1.2.
  • the radius R of the front arc 112A will become larger than the preset bending radius, while the radius R of the rear arc 112B will be larger than the preset radius
  • the bending radius will become smaller, and when the ratio of the two changes is too large, the deformation of the first pipe section 11 will be too large, and if the ratio of the two changes is small, it is necessary to extend the length of the blank of the first pipe section 11, which obviously will affect the heat exchange performance of the heat exchanger 100, therefore, it is appropriate to select the ratio of the two between 1 and 1.2.
  • the heat exchange tube 10 When the heat exchange tube 10 is bent, it can be bent into the A type shown in Figure 6, or it can be bent into the N type, that is, double-row bending.
  • the included angle ⁇ between the two second tube sections 12 when the heat exchange tube 10 is subjected to A-type bending, the included angle ⁇ between the two second tube sections 12 is an acute angle; The included angle ⁇ between 12 is close to 0°, that is, the two second pipe sections 12 are close to parallel.
  • the length L 2 of the torsion portion 111 satisfies the following relationship: 1.05T ⁇ L 2 ⁇ 1.25T.
  • the “length L 2 of the twisted portion 111” referred to here is the length of the blank of the corresponding tube section of the heat exchange tube 10 before twisting and bending. Measured.
  • the first pipe segment 11 has complex combined deformation of torsion and bending, and there is an uncertain interaction between the two. The limit is 1.05T ⁇ L 2 ⁇ 1.25T.
  • the blank length L of the first tube section 11 before processing satisfies 6t ⁇ (180- ⁇ )+2.2 T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+2.5T. It can be understood that, taking a single heat exchange tube 10 as the research object, the actual length of the first tube section 11 should be the length of two twisted sections 111 plus the length of one bent section 112 .
  • the blank length L of the first tube section 11 before processing is limited according to the above relationship, which is beneficial to avoid excessive local deformation of the heat exchange tube 10 and damage to the internal microchannels, and at the same time avoid the influence of excessive length of the finless section.
  • Other properties of the heat exchanger 100 are beneficial to avoid excessive local deformation of the heat exchange tube 10 and damage to the internal microchannels, and at the same time avoid the influence of excessive length of the finless section.
  • the length L 2 of the torsion portion 111 satisfies the following relationship: 1.5T ⁇ L 2 ⁇ 3.5T.
  • the blank length L of the first pipe section 11 before processing satisfies 6t ⁇ (180- ⁇ )+3.1T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+7T.
  • the twisted angle ⁇ of the twisted portion 111 relative to the second pipe segment 12 satisfies 50° ⁇ 90°, which is beneficial to ensure the processing effect of the twisted portion 111 .
  • the tube thickness t 1 at the bent portion 112 may be reduced to a certain extent compared with the tube thickness t at the second tube section 12 . That is, when r is close to 5.5t, the deformation of the heat exchange tube 10 at the bending part 112 is obvious. At this time, t 1 ⁇ t may occur, and t 1 is controlled within the range of 0.95t ⁇ t 1 ⁇ t. It is beneficial to avoid excessive deformation at a local position of the heat exchange tube 10 .
  • the heat exchanger 100 further includes a fin structure 30, and the fin structure 30 is sandwiched between the second tube sections 12 of adjacent heat exchange tubes 10, and no fin structure is provided at the first tube section 11. 30. In this way, during the working process of the heat exchanger 100, the first pipe section 11 basically does not participate in heat exchange.
  • this embodiment also provides a microchannel heat exchanger 100 . Its implementation principle and technical effects are the same as those of the above-mentioned embodiments, and for brief description, for those not mentioned in this embodiment, reference may be made to the corresponding content in the above-mentioned embodiments.
  • the microchannel heat exchanger 100 includes a plurality of heat exchange tubes 10 arranged in a preset direction, a header 20 and a plurality of sets of fin structures 30 .
  • the header 20 includes a first header 21 and a second header 22, and the ends of the two second tube sections 12 of the heat exchange tube 10 are respectively inserted and connected to the first header 21 and the second header. Tube 22.
  • first header 21 and the second header 22 are arranged roughly in parallel, and the two ends of the heat exchange tube 10 are respectively inserted and connected to the first header 21 and the second header 22, so that the refrigerant can
  • One of the first header 21 and the second header 22 is approximately evenly distributed into each heat exchange tube 10, and flows to the first header 21 and the second header after heat exchange.
  • the other of the tubes 22 is approximately evenly distributed into each heat exchange tube 10, and flows to the first header 21 and the second header after heat exchange.
  • the heat exchange tube 10 includes two second tube sections 12 and a first tube section 11 connected between the two second tube sections 12 .
  • the first pipe section 11 includes two torsion parts 111 which are respectively connected to the two second pipe sections 12 and twisted at a predetermined angle relative to the corresponding second pipe sections 12, and are located between the two torsion parts 111.
  • the bending portion 112 is bent with a preset bending radius.
  • step S100 In order to make the plurality of heat exchange tubes 10 form a relative positional relationship between front and rear insertion at the first pipe segment 11, in step S100, when the heat exchange tubes 10 are inserted into the first header 21 and the second header 22 Controlling the distance between adjacent heat exchange tubes 10 means that the adjacent heat exchange tubes 10 have been overlapped front and back after the processing of the twisted part 111 in step S300, and when the bending part 112 is processed in step S400, mutual Among the two overlapped heat exchange tubes 10 , the rear heat exchange tube 10 presses down on the tail of the front heat exchange tube 10 , thereby forming a forward and backward inclination, and making the first pipe section 11 form an approximately funnel-shaped structure.
  • each of the first tube sections 11 is formed with a front side with a radius R at the bending portion 112.
  • the length L 2 of the twisted portion 111 satisfies the following relationship Formula: 1.05T ⁇ L 2 ⁇ 1.25T, wherein: T is the width of the heat exchange tube 10 .
  • the blank length L of the first pipe section 11 before processing satisfies 6t ⁇ (180- ⁇ )+2.2T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+2.5T.
  • the length L 2 of the twisted portion 111 satisfies the following relationship Formula: 1.5T ⁇ L 2 ⁇ 3.5T, wherein: T is the width of the heat exchange tube 10 .
  • the blank length L of the first pipe section 11 before processing satisfies 6t ⁇ (180- ⁇ )+3.1T ⁇ L ⁇ 25.5t ⁇ (180- ⁇ )+7T.
  • the twisted angle ⁇ of the twisted portion 111 relative to the second pipe section 12 satisfies 50° ⁇ 90°.
  • the tube thickness at the bending portion 112 is t 1 , and the distance between t 1 and t satisfies 0.95t ⁇ t 1 ⁇ t.
  • two adjacent heat exchange tubes 10 that are inserted back and forth are abutted inside and outside at the first tube section 11 .
  • the heat exchanger 100 further includes a fin structure 30 interposed between the second tube sections 12 of the adjacent heat exchange tubes 10 .
  • spatially relative terms may be used here, such as “on !, “over !, “on the surface of !, “above”, etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as “above” or “above” other devices or configurations would then be oriented “beneath” or “above” the other devices or configurations. under other devices or configurations”. Thus, the exemplary term “above” can encompass both an orientation of “above” and “beneath”. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

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Abstract

一种换热器(100)及微通道换热器(100)。该换热器(100)包括多个沿预设方向依次设置的换热管(10)，各个换热管(10)均为扁管并包括相互连接的第一管段(11)和第二管段(12)；其中，多个第一管段(11)具有预设折弯线(11A)，预设折弯线(11A)与多个第一管段(11)的中心轴线均垂直；各个第一管段(11)的扁平侧面所在的平面与相应的第二管段(12)的扁平侧面所在的平面之间呈夹角设置，以在沿预设折弯线(11A)将多个第一管段(11)折弯后，任意相邻两个换热管(10)的第一管段(11)接触。

Description

换热器及微通道换热器
相关申请
本申请要求2021年9月13日申请的，申请号为202122214879.8，发明名称为“换热器”以及2021年9月28日申请的，申请号为202122371894.3，发明名称为“微通道换热器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及换热器技术领域，具体而言，涉及一种换热器及微通道换热器。
背景技术
相关技术中，通常将换热器的多个换热管折弯，以在有限的空间内获得较大的换热面积。
然而，折弯后的多个换热管中，相邻两个换热管通常是相间隔地设置，这不利于换热器的换热。
发明内容
根据本申请的各种实施例，提供一种换热器及微通道换热器。
本申请提供了一种换热器，其包括：多个沿预设方向依次设置的换热管，各个换热管均为扁管并包括相互连接的第一管段和第二管段；其中，多个第一管段具有预设折弯线，预设折弯线与多个第一管段的中心轴线均垂直；各个第一管段的扁平侧面所在的平面与相应的第二管段的扁平侧面所在的平面之间呈夹角设置，以在沿预设折弯线将多个第一管段折弯后，任意相邻两个换热管的第一管段接触。
在一实施例中，在对多个第一管段折弯之前，各个第一管段的扁平侧面所在的平面与相应的第二管段的扁平侧面所在的平面之间的夹角的取值范围为大于或等于55度且小于85度。
在一实施例中，在对多个第一管段折弯之前，多个第一管段的扁平侧面平行。
在一实施例中，各个换热管均包括两个第二管段，两个第二管段分别与第一管段的两端连接。
在一实施例中，各个换热管的两个第二管段分别为第三管段和第四管段，多个第三管段的扁平侧面均平行；和/或，多个第四管段的扁平侧面均平行；和/或，当多个第一管段折弯后，多个第三管段的中心轴线所在的平面和多个第四管段的中心轴线所在的平面之间 平行或呈夹角设置。
在一实施例中，各个换热管的第一管段和第二管段之间设置有扭转管段，以连接第一管段和第二管段。
在一实施例中，在对多个第一管段折弯之前，在各个换热管中，沿第一管段的延伸方向，第一管段的长度和两个扭转管段的水平长度之和为S；换热管的扁平面的宽度为W，3W≤S≤8W。
在一实施例中，任意相邻两个第二管段之间均设置有翅片结构，各个翅片结构设置在相应的相邻两个第二管段中的其中一个第二管段上。
在一实施例中，换热器还包括集流管，集流管沿预设方向延伸设置，多个第二管段均与集流管连接并连通。
在一实施例中，各个换热管均为一体成型结构。
在一实施例中，所述第一管段位于两段所述第二管段之间；所述第一管段和所述第二管段之间设置有扭转管段，以连接所述第一管段和所述第二管段，所述扭转管段包括分别与两段所述第二管段连接并相对于对应的所述第二管段扭转预设角度形成的两段扭转部，以及位于两段扭转部之间以预设折弯半径折弯的折弯部；沿所述预设方向，多个所述换热管在所述第一管段处前后插接，每个所述扭转管段的所述折弯部处形成有半径为R前侧弧部和半径为r的后侧弧部，其中：R＞r，且5.5t≤r≤25t，t为所述换热管的所述第二管段处管厚。
在一实施例中，1＜R/r＜1.2。
在一实施例中，当所述换热管的两段所述第二管段之间的夹角θ满足23°≤θ≤70°时，所述扭转部的长度L 2满足以下关系式：1.05T≤L 2≤1.25T，其中：T为所述换热管的宽度。
在一实施例中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+2.2T≤L≤25.5tπ(180-θ)+2.5T。
在一实施例中，当所述换热管的两段所述第二管段之间的夹角θ满足0°≤θ≤5°时，所述扭转部的长度L 2满足以下关系式：1.5T≤L 2≤3.5T，其中：T为所述换热管的宽度。
在一实施例中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+3.1T≤L≤25.5tπ(180-θ)+7T。
在一实施例中，所述扭转部相对于所述第二管段扭转的角度β满足50°≤β≤90°。
在一实施例中，所述折弯部处的管厚为t 1，t 1与t之间满足0.95t≤t 1≤t。
在一实施例中，前后接触的相邻两个所述换热管在所述第一管段处内外抵接。
在一实施例中，所述换热器还包括翅片结构，所述翅片结构夹设于相邻所述换热管的所述第二管段之间。
本申请还提供了一种微通道换热器，包括沿预设方向排布的多个换热管，每个所述换热管均包括两段第二管段和位于两段所述第二管段之间的第一管段；所述第一管段包括分别与两段所述第二管段连接并相对于对应的所述第二管段扭转预设角度形成的两段扭转部，以及位于两段扭转部之间以预设折弯半径折弯的折弯部；沿所述预设方向，多个所述换热管在所述第一管段处前后插接，每个所述第一管段的所述折弯部处形成有半径为R前侧弧部和半径为r的后侧弧部，其中：R＞r，且5.5t≤r≤25t，t为所述换热管的所述第二管段处管厚。
在一实施例中，1＜R/r＜1.2。
在一实施例中，当所述换热管的两段所述第二管段之间的夹角θ满足23°≤θ≤70°时，所述扭转部的长度L 2满足以下关系式：1.05T≤L 2≤1.25T，其中：T为所述换热管的宽度。
在一实施例中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+2.2T≤L≤25.5tπ(180-θ)+2.5T。
在一实施例中，当所述换热管的两段所述第二管段之间的夹角θ满足0°≤θ≤5°时，所述扭转部的长度L 2满足以下关系式：1.5T≤L 2≤3.5T，其中：T为所述换热管的宽度。
在一实施例中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+3.1T≤L≤25.5tπ(180-θ)+7T。
在一实施例中，所述扭转部相对于所述第二管段扭转的角度β满足50°≤β≤90°。
在一实施例中，所述折弯部处的管厚为t 1，t 1与t之间满足0.95t≤t 1≤t。
在一实施例中，前后插接的相邻两个所述换热管在所述第一管段处内外抵接。
在一实施例中，所述换热器还包括翅片结构，所述翅片结构夹设于相邻所述换热管的所述第二管段之间。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1示出了根据一个或多个实施例的换热器的多个换热管在折弯之前的结构示意图。
图2示出了图1中的换热器的多个换热管在折弯之后的一种结构示意图。
图3示出了图1中的换热器的多个换热管在折弯之后的另一种结构示意图。
图4示出了图1中的换热器去除掉翅片结构的结构示意图。
图5示出了图1中的换热器的一个换热管在折弯之前的结构示意图。
图6为根据一个或多个实施例的换热器的结构示意图。
图7为图6换热器中换热管的局部结构示意图。
图8为图7中所示换热管的另一视角视图。
其中，上述附图包括以下附图标记：
100、换热器/微通道换热器；10、换热管；11、第一管段；11A、预设折弯线；12、第二管段；121、第三管段；122、第四管段；13、扭转管段；111、扭转部；112、折弯部；112A、前侧弧部；112B、后侧弧部；20、集流管；21、第一集流管；22、第二集流管；30、翅片结构。
具体实施方式
下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接装设在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本申请所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
本申请提供了一种换热器100，请参考图1至图5，换热器100包括多个沿预设方向依次设置的换热管10，各个换热管10均为扁管并包括相互连接的第一管段11和第二管段12；其中，多个第一管段11具有预设折弯线11A，预设折弯线11A与多个第一管段11的中心轴线均垂直；各个第一管段11的扁平侧面所在的平面与相应的第二管段12的扁平侧 面所在的平面之间呈夹角设置，以在沿预设折弯线11A将多个第一管段11折弯后，任意相邻两个换热管10的第一管段11接触。
具体地，各个第一管段11的扁平侧面与其厚度方向垂直；各个第一管段11具有折弯线，各个第一管段11的折弯线与其中心轴线垂直，多个第一管段11的折弯线重合以形成预设折弯线11A。
需要说明的是，当扁管为长方形扁管时，该扁管具有四个侧面，四个侧面的长度均相等，宽度较大的两个相对的侧面为该扁管的扁平侧面，且宽度较大的两个相对的侧面的分布方向与该扁管的厚度方向平行。
具体实施过程中，将各个第一管段11相对于相应的第二管段12扭转一定的角度，以使各个第一管段11的扁平侧面所在的平面与相应的第二管段12的扁平侧面所在的平面之间呈夹角设置，这样在将多个第一管段11沿预设折弯线11A折弯后，任意相邻两个换热管10的第一管段11之间能够接触，这种结构设置可以增强相邻两个第一管段11之间的换热效果，进而增强相邻两个换热管10之间的换热效果，进一步增强换热器100的换热效果，解决了相关技术中的换热器100的换热效果较差的问题。
需要说明的是，在转动第一管段11之前，各个换热管10的第一管段11的扁平侧面与第二管段12的扁平侧面在同一平面。可选地，各个换热管10均为一体成型结构，便于换热器100的安装加工。
需要说明的是，由于多个第一管段11的预设折弯线11A重合，故预设方向为预设直线的延伸方向，即多个换热管10沿预设直线的延伸方向依次设置，各个换热管10的延伸方向与预设方向垂直。
具体地，多个第二管段12的扁平侧面均平行。
在一些实施例中，在对多个第一管段11折弯之前，各个第一管段11的扁平侧面所在的平面与相应的第二管段12的扁平侧面所在的平面之间的夹角的取值范围为大于或等于55度且小于85度，以保证在多个第一管段11折弯之后，任意相邻两个第一管段11之间能够接触。即各个第一管段11相对于相应的第二管段12的扭转角度为大于或等于55度且小于85度。
在一些实施例中，在对多个第一管段11折弯之前，多个第一管段11的扁平侧面平行，即各个第一管段11的扁平侧面所在的平面与相应的第二管段12的扁平侧面所在的平面之间的夹角均相等，多个第一管段11的扭转角度均相等。
需要说明的是，各个第一管段11的相应的第二管段12是指该第一管段11和该第二管段12属于同一个换热管10。
在一些实施例中，各个换热管10均包括两个第二管段12，两个第二管段12分别与第一管段11的两端连接；各个换热管10的两个第二管段12分别为第三管段121和第四管段122。
具体地，在第一管段11折弯之前或折弯之后，多个第三管段121的扁平侧面均平行，多个第四管段122的扁平侧面均平行；其中，多个第三管段121位于多个第一管段11的同一端，多个第四管段122位于多个第一管段11的同一端。
具体地，在多个第一管段11折弯之前，多个第三管段121的中心轴线所在的平面和多个第四管段122的中心轴线所在的平面重合；如图2和图3所示，当多个第一管段11折弯后，多个第三管段121的中心轴线所在的平面和多个第四管段122的中心轴线所在的平面之间平行或呈夹角设置。
在一些实施例中，各个换热管10的第一管段11和第二管段12之间设置有扭转管段13，以连接第一管段11和第二管段12。具体实施过程中，在多个第一管段11折弯之前，对于各个换热管10，通过对该换热管10的扭转管段13进行扭转，以使该换热管10的第一管段11的扁平侧面所在的平面与其第二管段12的扁平侧面所在的平面之间呈夹角设置。
具体地，各个换热管10包括两个扭转管段13，一个扭转管段13设置在第一管段11和第三管段121之间，以连接第一管段11和第三管段121；另一个扭转管段13设置在第一管段11和第四管段122之间，以连接第一管段11和第四管段122，两个扭转管段13的设置，过渡连接第一管段11和第三管段121及第一管段11和第四管段122，有效防止换热管10扭转过度造成破裂。
在一些实施例中，在对多个第一管段11折弯之前，在各个换热管10中，沿第一管段11的延伸方向，第一管段11的长度和两个扭转管段13的水平长度之和为S，即两个第二管段12之间的水平间距为S；换热管10的扁平面的宽度为W，3W≤S≤8W。具体实施过程中，第二管段12上用于设置翅片结构30，第一管段11和扭转管段13上均不设置翅片结构，即第一管段11和扭转管段13均为无翅段，如果无翅段过长，会造成换热器100的有效换热面积减小。
需要说明的是，扭转管段13的水平长度是指扭转管段13的两端之间在第一管段11的延伸方向上的水平间距。
需要说明的是，各个第一管段11在相对于第二管段12扭转之前和扭转之后，各个第一管段11的延伸方向与相应的第二管段12的延伸方向均相同。
在一些实施例中，任意相邻两个第二管段12之间均设置有翅片结构30，各个翅片结构30设置在相应的相邻两个第二管段12中的其中一个第二管段12上。
具体地，各个翅片结构30设置在相应的第二管段12的扁平侧面上。
在一些实施例中，换热器100还包括集流管20，集流管20沿预设方向延伸设置，多个第二管段12均与集流管20连接并连通。
在一些实施例中，集流管20为两个，多个第三管段121均与一个集流管20连接并连通，多个第四管段122均与另一个集流管20连接并连通。具体的，集流管20包括第一集流管21和第二集流管22，换热管10在的两段第二管段12的端部分别插接并连通至第一集流管21和第二集流管22。
从以上的描述中，可以看出，本申请上述的实施例实现了如下技术效果：
在本申请的换热器100中，换热器100包括多个沿预设方向依次设置的换热管10，各个换热管10均为扁管并包括相互连接的第一管段11和第二管段12；其中，多个第一管段11具有预设折弯线11A，预设折弯线11A与多个第一管段11的中心轴线均垂直；各个第一管段11的扁平侧面所在的平面与相应的第二管段12的扁平侧面所在的平面之间呈夹角设置，以在沿预设折弯线11A将多个第一管段11折弯后，任意相邻两个换热管10的第一管段11接触。
具体实施过程中，将各个第一管段11相对于相应的第二管段12扭转一定的角度，以使各个第一管段11的扁平侧面所在的平面与相应的第二管段12的扁平侧面所在的平面之间呈夹角设置，这样在将多个第一管段11沿预设折弯线11A折弯后，任意相邻两个换热管10的第一管段11之间能够接触，这种结构设置可以增强相邻两个第一管段11之间的换热效果，进而增强相邻两个换热管10之间的换热效果，进一步增强换热器100的换热效果，解决了相关技术中的换热器100的换热效果较差的问题。
在一些实施例中，换热管10包括两段第二管段12以及连接于两段第二管段12之间的第一管段11。沿预设方向，即图6中箭头所指方向，多个换热管10在第一管段11处前后插接。可以理解，沿着图6中箭头指向的方向，前侧的换热管10的第一管段11后部***相邻后侧的换热管10的第一管段11内。
所述第一管段11和所述第二管段12之间设置有扭转管段13，以连接所述第一管段11和所述第二管段12。所述扭转管段13包括分别与两段所述第二管段12连接并相对于对应的所述第二管段12扭转预设角度形成的两段扭转部111，以及位于两段扭转部111之间以预设折弯半径折弯的折弯部112。
如图8中所示，每个第一管段11的折弯部112处形成有半径为R的前侧弧部112A，以及半径为r的后侧弧部112B。其中：在换热器100处于组装状态时，图6中箭头所指方向，前侧第一管段11的后侧弧部112B***至后侧第一管段11的前侧弧部112A内，可选 的，前后插接的相邻两个换热管10在第一管段11处(即插接部位处)还可以内外抵接，以进一步提高换热器100的局部强度，同时还可以减少折弯部112处的漏风情况。这里所指的R和r，均是指图8中换热管10折弯部112内侧的半径。
该前侧弧部112A的半径R大于后侧弧部112B的半径r，即R＞r。这是由于：在微通道换热管的第一管段11处同时存在着扭转和折弯两种形变，这导致在以预设的折弯半径进行折弯时，换热管10的局部已经存在扭转变形，在两种变形的叠加下，沿换热管10的管宽方向，折弯部112处的一侧边缘变形至稍大于该预设的折弯半径，而另一侧边缘变形至稍小于该预设的折弯半径。
参考图7中的标记所示，以下描述中：以t表示第二管段12处的管厚，即，换热管10在毛坯状态下的管厚，以T表示换热管10的管宽。结合图7和图8中所示，在折弯部112处，后侧弧部112B的半径r与管厚t之间满足如下关系：5.5t≤r≤25t。
由前所述，在折弯时，后侧弧部112B的半径r相比于预设的折弯半径是减小的，而随着该半径r的减小，换热管10在该局部位置可能会出现过大的变形，该过大的变形会使得换热管10内后侧弧部112B附近的微通道受到挤压而破坏，因此，为了避免内部的微通道遭到挤压破坏，限制r的最小值大于等于5.5倍的管厚t。
同时，由于第一管段11处均不设置翅片结构30，因此，换热管10的这部分管段在换热器100工作时并不参与换热，虽然，限制r的最小值有利于避免内部微通道遭到挤压破坏，但无限制的增大r，会导致第一管段11的长度变大，相应的，换热管10中不参与换热的管长会增加，不利于换热器100整体的换热。尤其是，当r取较大的值后，折弯部112处的折弯变得不明显，冷凝水容易在折弯部112处凝结并下滴，这是换热器100中需要避免的情况，因此，限制r不超过25倍的管厚t，有利于避免上述不利影响。
可以理解，不同于普通的圆管和板料，换热管10由于其内部特殊的微通道结构，使得其在扭转、折弯中有着独特的变形效果，而并不像规则的管、板在扭转和折弯时表现出的形变特点。通过大量的研究与试验，发明人发现：通过控制后侧弧部112B的半径r与管厚t之间的相对倍数，可以很好地控制换热管10的局部变形程度。
在一些实施例中，1＜R/r＜1.2。由前所述，在折弯和扭转两种变形的影响下，前侧弧部112A半径R相比于预设的折弯半径会变大，而后侧弧部112B的半径相比于预设的折弯半径会变小，两者变化的比例过分大时，会使得第一管段11的变形过大，而想要两者变化的比例小，需要延长第一管段11的毛坯长度，这显然会影响换热器100的换热性能，因此，选择两者的比值在1至1.2之间是合适的。
换热管10在折弯时，可以被折弯成图6中所示的A型,也可以被折弯成N型，即双排 折弯。其中：当对换热管10进行A型折弯时，两段第二管段12之间的夹角θ为一个锐角；而当对换热管10进行双排折弯时，两段第二管段12之间的夹角θ接近0°，即，两第二管段12接***行。
当换热管10的两段第二管段12之间的夹角θ满足23°≤θ≤70°时，扭转部111的长度L 2满足以下关系式：1.05T≤L 2≤1.25T。应当理解，为了便于加工，这里所称“扭转部111的长度L 2”为换热管10相应管段在扭转折弯加工前的毛坯长度，这一参数可以在扭转加工换热管10前方便地被测量。由前所述，第一管段11处存在的是复杂的扭转和折弯组合变形，两者存在不确定的相互影响，限制1.05T≤L 2≤1.25T，可以在扭转折弯加工时，就将折弯加工时两段第二管段12之间成型夹角θ考虑在内，进而避免由于扭转加工导致换热管10局部变形基本达到临界状态(即换热管10并无明显破坏发生)，而折弯加工时换热管10的进一步变形使得最终管壁破裂或局部的微通道遭到破坏。
进一步地，将前述r与管厚t之间的关系考虑在内，并综合考虑换热管10的其他变形因素影响，第一管段11加工前的毛坯长度L满足6tπ(180-θ)+2.2T≤L≤25.5tπ(180-θ)+2.5T。可以理解，以单个换热管10为研究对象，其第一管段11的实际长度应当是两段扭转部111的长度叠加一段折弯部112的长度。而考虑了一定的设计误差后，按照上述关系限定第一管段11加工前的毛坯长度L，有利于避免换热管10局部变形过大导致内部微通道受破坏，同时避免无翅片段过长影响换热器100的其他性能。
类似地，在换热管10被折弯呈双排折弯换型换热管10的实施方式中，当换热管10的两段第二管段12之间的夹角θ满足0°≤θ≤5°时，扭转部111的长度L 2满足以下关系式：1.5T≤L 2≤3.5T。而进一步地，在这种实施方式中，第一管段11加工前的毛坯长度L满足6tπ(180-θ)+3.1T≤L≤25.5tπ(180-θ)+7T。
在一些实施方式中，扭转部111相对于第二管段12扭转的角度β满足50°≤β≤90°，这样有利于保证扭转部111的加工效果。
在折弯微通道换热管10时，折弯部112处的管厚t 1相比于第二管段12处的管厚t可能会存在一定程度的缩小。即，在r接近5.5t时，折弯部112处换热管10形变明显，此时，可能出现t 1≤t的情况，将t 1控制在0.95t≤t 1≤t的范围内，有利于避免换热管10局部位置出现过大的变形。
在一些实施例中，换热器100还包括翅片结构30，翅片结构30夹设于相邻换热管10的第二管段12之间，而在第一管段11处不设置翅片结构30，这样，在换热器100工作的过程中，第一管段11基本不参与换热。
如图6-图8所示，本实施例还提供了一种微通道换热器100。其实现原理及产生的技 术效果与上述实施例相同，为简要描述，本实施例未提及之处，可参考上述实施例中相应内容。
在本实施例中，请参考图6，微通道换热器100包括多个沿预设方向排布的换热管10、集流管20以及多组翅片结构30。集流管20包括第一集流管21和第二集流管22，换热管10的两段第二管段12的端部分别插接并连通至第一集流管21和第二集流管22。其中：第一集流管21与第二集流管22大致平行设置，换热管10的两端分别插接并连通至第一集流管21和第二集流管22，以使冷媒能够从第一集流管21和第二集流管22中的一者被大致均匀地分配至每个换热管10内，并在换热后流至第一集流管21和第二集流管22中的另一者。
换热管10包括两段第二管段12以及连接于两段第二管段12之间的第一管段11。所述第一管段11包括分别与两段所述第二管段12连接并相对于对应的所述第二管段12扭转预设角度形成的两段扭转部111，以及位于两段扭转部111之间以预设折弯半径折弯的折弯部112。
以下给出一种在换热管10上加工出第一管段11的方式：
S100，将全部的换热管10两端分别与第一集流管21和第二集流管22插接，形成一个整体。
S200，在换热管10大致长度中央的位置选定长度为L的管段作为第一管段11加工的毛坯。
S300，以适当的方式在步骤S200中毛坯上临近两段第二管段12的位置加工出两段扭转部111。
S400，通过适当的折弯设备将两段扭转部111之间的毛坯折弯形成折弯部112。
为了使多个换热管10在第一管段11处形成前后插接的相对位置关系，在步骤S100中，换热管10与第一集流管21和第二集流管22上插接时，控制相邻换热管10之间的间距，即可使得相邻的换热管10在步骤S300的扭转部111加工完成后已经前后搭接，在步骤S400中加工折弯部112时，相互搭接的两根换热管10中，后侧的换热管10会下压前侧的换热管10的尾部，从而形成前后倾斜，并使得第一管段11处形成近似漏斗形的结构。
沿所述预设方向，多个所述换热管10在所述第一管段11处前后插接，每个所述第一管段11的所述折弯部112处形成有半径为R前侧弧部112A和半径为r的后侧弧部112B，其中：R＞r，且5.5t≤r≤25t，t为所述换热管10的所述第二管段12处管厚。
在一些实施例中，1＜R/r＜1.2。
在一些实施例中，当所述换热管10的两段所述第二管段12之间的夹角θ满足23°≤θ≤70°时，所述扭转部111的长度L 2满足以下关系式：1.05T≤L 2≤1.25T，其中：T为所述换热管10的宽度。
在一些实施例中，所述第一管段11加工前的毛坯长度L满足6tπ(180-θ)+2.2T≤L≤25.5tπ(180-θ)+2.5T。
在一些实施例中，当所述换热管10的两段所述第二管段12之间的夹角θ满足0°≤θ≤5°时，所述扭转部111的长度L 2满足以下关系式：1.5T≤L 2≤3.5T，其中：T为所述换热管10的宽度。
在一些实施例中，所述第一管段11加工前的毛坯长度L满足6tπ(180-θ)+3.1T≤L≤25.5tπ(180-θ)+7T。
在一些实施例中，所述扭转部111相对于所述第二管段12扭转的角度β满足50°≤β≤90°。
在一些实施例中，所述折弯部112处的管厚为t 1，t 1与t之间满足0.95t≤t 1≤t。
在一些实施例中，前后插接的相邻两个所述换热管10在所述第一管段11处内外抵接。
在一些实施例中，所述换热器100还包括翅片结构30，所述翅片结构30夹设于相邻所述换热管10的所述第二管段12之间。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
为了便于描述，在这里可以使用空间相对术语，如“在……之上”、“在……上方”、“在……上表面”、“上面的”等，用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位置关系。应当理解的是，空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。例如，如果附图中的器件被倒置，则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而，示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位)，并且对这里所使用的空间相对描述作出相应解释。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (30)

  1. 一种换热器，其特征在于，包括：
    多个沿预设方向依次设置的换热管，各个所述换热管均为扁管并包括相互连接的第一管段和第二管段；
    其中，多个所述第一管段具有预设折弯线，所述预设折弯线与多个所述第一管段的中心轴线均垂直；
    各个所述第一管段的扁平侧面所在的平面与相应的所述第二管段的扁平侧面所在的平面之间呈夹角设置，以在沿所述预设折弯线将多个所述第一管段折弯后，任意相邻两个所述换热管的所述第一管段接触。
  2. 根据权利要求1所述的换热器，其中，在对多个所述第一管段折弯之前，各个所述第一管段的扁平侧面所在的平面与相应的所述第二管段的扁平侧面所在的平面之间的夹角的取值范围为大于或等于55度且小于85度。
  3. 根据权利要求1所述的换热器，其中，在对多个所述第一管段折弯之前，多个所述第一管段的扁平侧面平行。
  4. 根据权利要求1所述的换热器，其中，各个所述换热管均包括两个所述第二管段，两个所述第二管段分别与所述第一管段的两端连接。
  5. 根据权利要求1所述的换热器，其中，各个所述换热管的两个所述第二管段分别为第三管段和第四管段，
    多个所述第三管段的扁平侧面均平行；和/或
    多个所述第四管段的扁平侧面均平行；和/或
    当多个所述第一管段折弯后，多个所述第三管段的中心轴线所在的平面和多个所述第四管段的中心轴线所在的平面之间平行或呈夹角设置。
  6. 根据权利要求1或5所述的换热器，其中，各个所述换热管的所述第一管段和所述第二管段之间设置有扭转管段，以连接所述第一管段和所述第二管段。
  7. 根据权利要求6所述的换热器，其中，在对多个所述第一管段折弯之前，在各个所述换热管中，沿所述第一管段的延伸方向，所述第一管段的长度和两个所述扭转管段的水平长度之和为S；所述换热管的扁平面的宽度为W，3W≤S≤8W。
  8. 根据权利要求1所述的换热器，其中，任意相邻两个所述第二管段之间均设置有翅片结构，各个所述翅片结构设置在相应的相邻两个所述第二管段中的其中一个所述第二管 段上。
  9. 根据权利要求1所述的换热器，其中，所述换热器还包括集流管，所述集流管沿所述预设方向延伸设置，多个所述第二管段均与所述集流管连接并连通。
  10. 根据权利要求1所述的换热器，其中，各个所述换热管均为一体成型结构。
  11. 根据权利要求1所述的换热器，其中，所述换热器为微通道换热器，所述第一管段位于两段所述第二管段之间；
    所述第一管段和所述第二管段之间设置有扭转管段，以连接所述第一管段和所述第二管段，所述扭转管段包括分别与两段所述第二管段连接并相对于对应的所述第二管段扭转预设角度形成的两段扭转部，以及位于两段扭转部之间以预设折弯半径折弯的折弯部；
    沿所述预设方向，多个所述换热管在所述第一管段处前后插接，每个所述扭转管段的所述折弯部处形成有半径为R前侧弧部和半径为r的后侧弧部，其中：
    R＞r，且5.5t≤r≤25t，t为所述换热管的所述第二管段处管厚。
  12. 根据权利要求11所述的换热器，其中，1＜R/r＜1.2。
  13. 根据权利要求11所述的换热器，其中，当所述换热管的两段所述第二管段之间的夹角θ满足23°≤θ≤70°时，所述扭转部的长度L 2满足以下关系式：1.05T≤L 2≤1.25T，其中：T为所述换热管的宽度。
  14. 根据权利要求13所述的换热器，其中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+2.2T≤L≤25.5 tπ(180-θ)+2.5T。
  15. 根据权利要求11所述的换热器，其中，当所述换热管的两段所述第二管段之间的夹角θ满足0°≤θ≤5°时，所述扭转部的长度L 2满足以下关系式：1.5T≤L 2≤3.5T，其中：T为所述换热管的宽度。
  16. 根据权利要求15所述的换热器，其中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+3.1T≤L≤25.5 tπ(180-θ)+7T。
  17. 根据权利要求11所述的换热器，其中，所述扭转部相对于所述第二管段扭转的角度β满足50°≤β≤90°。
  18. 根据权利要求11所述的换热器，其中，所述折弯部处的管厚为t 1，t 1与t之间满足0.95t≤t 1≤t。
  19. 根据权利要求11所述的换热器，其中，前后接触的相邻两个所述换热管在所述第一管段处内外抵接。
  20. 根据权利要求11所述的换热器，其中，所述换热器还包括翅片结构，所述翅片结构夹设于相邻所述换热管的所述第二管段之间。
  21. 一种微通道换热器，包括沿预设方向排布的多个换热管，其特征在于，每个所述换热管均包括两段第二管段和位于两段所述第二管段之间的第一管段；
    所述第一管段包括分别与两段所述第二管段连接并相对于对应的所述第二管段扭转预设角度形成的两段扭转部，以及位于两段扭转部之间以预设折弯半径折弯的折弯部；
    沿所述预设方向，多个所述换热管在所述第一管段处前后插接，每个所述第一管段的所述折弯部处形成有半径为R前侧弧部和半径为r的后侧弧部，其中：
    R＞r，且5.5t≤r≤25t，t为所述换热管的所述第二管段处管厚。
  22. 根据权利要求21所述的微通道换热器，其中，1＜R/r＜1.2。
  23. 根据权利要求21所述的微通道换热器，其中，当所述换热管的两段所述第二管段之间的夹角θ满足23°≤θ≤70°时，所述扭转部的长度L 2满足以下关系式：1.05T≤L 2≤1.25T，其中：T为所述换热管的宽度。
  24. 根据权利要求23所述的微通道换热器，其中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+2.2T≤L≤25.5 tπ(180-θ)+2.5T。
  25. 根据权利要求21所述的微通道换热器，其中，当所述换热管的两段所述第二管段之间的夹角θ满足0°≤θ≤5°时，所述扭转部的长度L 2满足以下关系式：1.5T≤L 2≤3.5T，其中：T为所述换热管的宽度。
  26. 根据权利要求25所述的微通道换热器，其中，所述第一管段加工前的毛坯长度L满足6tπ(180-θ)+3.1T≤L≤25.5 tπ(180-θ)+7T。
  27. 根据权利要求21所述的微通道换热器，其中，所述扭转部相对于所述第二管段扭转的角度β满足50°≤β≤90°。
  28. 根据权利要求21所述的微通道换热器，其中，所述折弯部处的管厚为t 1，t 1与t之间满足0.95t≤t 1≤t。
  29. 根据权利要求21所述的微通道换热器，其中，前后插接的相邻两个所述换热管在所述第一管段处内外抵接。
  30. 根据权利要求21所述的微通道换热器，其中，所述换热器还包括翅片结构，所述翅片结构夹设于相邻所述换热管的所述第二管段之间。
PCT/CN2022/117993 2021-09-13 2022-09-09 换热器及微通道换热器 WO2023036279A1 (zh)

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