EP4273490A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP4273490A1
EP4273490A1 EP21914130.6A EP21914130A EP4273490A1 EP 4273490 A1 EP4273490 A1 EP 4273490A1 EP 21914130 A EP21914130 A EP 21914130A EP 4273490 A1 EP4273490 A1 EP 4273490A1
Authority
EP
European Patent Office
Prior art keywords
header
flat
flat tube
flat tubes
wall
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP21914130.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Leilei WANG
Feng Zhang
Xuemei Yang
Jing Yuan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of EP4273490A1 publication Critical patent/EP4273490A1/en
Pending legal-status Critical Current

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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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—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
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a 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
    • F28F2210/00—Heat exchange conduits
    • F28F2210/08—Assemblies of conduits having different features
    • 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
    • F28F2225/02—Reinforcing means for casings
    • 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

Definitions

  • the embodiments of the present invention relate to a heat exchanger.
  • a heat exchanger comprises a header, flat tubes, and fins arranged alternately with the flat tubes.
  • the present invention provides a heat exchanger, comprising: a header, comprising a header wall having multiple through-holes; and multiple flat tubes, the multiple flat tubes being arranged in an axial direction of the header, and ends of the multiple flat tubes being respectively inserted into multiple through-holes of the header wall of the header and connected to the header wall, wherein the multiple flat tubes comprise two sets of first flat tubes that are outermost in the axial direction of the header, and a second flat tube between the two sets of first flat tubes; the header comprises two first parts corresponding to outermost flat tubes in the axial direction of the header, and a second part between the two first parts, and wherein the tensile strength of at least one set of first flat tubes in the two sets of first flat tubes in the axial direction of the header is greater than the tensile strength of the second flat tube in the axial direction of the header, and/or the tensile strength of at least one first part of the two first parts of the header in the axial direction of the header is greater than the tensile strength of
  • the flat tube comprises multiple channels, and a spacing wall between adjacent channels; a dimension, in the direction of arrangement of the spacing wall, of at least one spacing wall of at least one first flat tube in the at least one set of first flat tubes is greater than a dimension, in the direction of arrangement of the spacing wall, of the spacing wall of the second flat tube.
  • the at least one spacing wall of at least one first flat tube in the at least one set of first flat tubes is a spacing wall located in the middle in a width direction of the first flat tube.
  • the dimensions, in the direction of arrangement of the spacing walls, of multiple spacing walls of at least one first flat tube in the at least one set of first flat tubes are the same.
  • At least one first flat tube in the at least one set of first flat tubes is a solid flat tube.
  • At least one first flat tube in the at least one set of first flat tubes comprises multiple secondary flat tubes, the multiple secondary flat tubes being spaced apart in a width direction of the flat tube; and the through-hole in the header wall of the header corresponding to the at least one first flat tube comprises multiple secondary through-holes, the multiple secondary through-holes being spaced apart in a circumferential direction of the header, and ends of the multiple secondary flat tubes being respectively inserted into the multiple secondary through-holes and connected to the header wall.
  • adjacent secondary flat tubes in the multiple secondary flat tubes of at least one first flat tube in the at least one set of first flat tubes are connected via a connecting part, the multiple secondary flat tubes being formed integrally with the connecting part.
  • At least one first flat tube in the at least one set of first flat tubes comprises two secondary flat tubes
  • the through-hole in the header wall of the header corresponding to the at least one first flat tube comprises two secondary through-holes.
  • a dimension, in a circumferential direction of the header, of the through-hole in the header wall of the header corresponding to at least one first flat tube in the at least one set of first flat tubes is less than a dimension, in the circumferential direction of the header, of the through-hole in the header wall of the header corresponding to the second flat tube.
  • the through-hole in the header wall of the header corresponding to the at least one first flat tube in the at least one set of first flat tubes is inclined relative to the axial direction of the header.
  • the through-hole in the header wall of the header corresponding to the at least one first flat tube in the at least one set of first flat tubes has a curved shape.
  • the through-hole in the header wall of the header corresponding to the at least one first flat tube in the at least one set of first flat tubes is parallel to the through-hole in the header wall of the header corresponding to the second flat tube.
  • each set of first flat tubes in the two sets of first flat tubes comprises one or more first flat tubes.
  • the heat exchanger By using the heat exchanger according to an embodiment of the present invention, it is possible for example to increase the bursting strength of the heat exchanger.
  • a heat exchanger 100 comprises: a header 1, the header 1 comprising a header wall 10, and the header wall 10 having multiple through-holes 11; and multiple flat tubes 2.
  • the multiple flat tubes 2 are arranged in an axial direction of the header 1, and ends 21 of the multiple flat tubes 2 are respectively inserted into the multiple through-holes 11 in the header wall 10 of the header 1 and connected to the header wall 10.
  • the multiple flat tubes 2 comprise two sets of first flat tubes 2A that are outermost in the axial direction of the header 1, and a second flat tube 2B between the two sets of first flat tubes 2A.
  • the header 1 comprises two first parts 12A corresponding to outermost flat tubes 2 in the axial direction of the header 1, and a second part 12B between the two first parts 12A.
  • the tensile strength of at least one set of first flat tubes 2A in the two sets of first flat tubes 2A in the axial direction of the header 1 is greater than the tensile strength of the second flat tube 2B in the axial direction of the header 1, and/or the tensile strength of at least one first part 12A of the two first parts 12A of the header 1 in the axial direction of the header 1 is greater than the tensile strength of the second part 12B of the header 1 in the axial direction of the header 1.
  • the heat exchanger 100 may also comprise fins 3 arranged alternately with the flat tubes 2.
  • the header 1 also comprises an end cap 13.
  • Each set of first flat tubes 12A in the two sets of first flat tubes 12A comprises one or more first flat tubes 12A.
  • the multiple first flat tubes 12A are arranged sequentially or one after the other.
  • each set of first flat tubes 12A comprises one first flat tube 12A.
  • Fig. 2 is a sectional view of a first flat tube of a heat exchanger according to an embodiment of the present invention
  • Fig. 3 is a sectional view of a second flat tube of a heat exchanger according to an embodiment of the present invention.
  • the flat tube 2 comprises multiple channels 20, and spacing walls 22 between adjacent channels 20; and a dimension, in the direction of arrangement of the spacing walls 22, of at least one spacing wall 22 of at least one first flat tube 2A in at least one set of first flat tubes 2A is greater than a dimension, in the direction of arrangement of the spacing walls 22, of the spacing wall 22 of the second flat tube 2B.
  • the dimension, in the direction of arrangement of the spacing walls 22, of at least one spacing wall 22 of the first flat tube 2A is greater than the dimension, in the direction of arrangement of the spacing walls 22, of the spacing wall 22 of the second flat tube 2B.
  • the direction of arrangement of the spacing walls 22 is also a width direction of the flat tubes 2.
  • the dimensions, in the direction of arrangement of the spacing walls 22, of multiple spacing walls 22 of at least one first flat tube 2Ain at least one set of first flat tubes 2A may be the same or different; for example, the dimensions, in the direction of arrangement of the spacing walls 22, of multiple spacing walls 22 of the first flat tube 2A may be the same or different.
  • the at least one spacing wall 22 of at least one first flat tube 2A in at least one set of first flat tubes 2A is a spacing wall 22 located in the middle in the width direction of the first flat tube 2A.
  • the at least one spacing wall 22 of the first flat tube 2A is a spacing wall 22 located in the middle in the width direction of the first flat tube 2A.
  • At least one first flat tube 2A in at least one set of first flat tubes 2A is a solid flat tube 2; for example, the first flat tube 2A is a solid flat tube 2, i.e. has no channel 20.
  • At least one first flat tube 2A in at least one set of first flat tubes 2A comprises multiple secondary flat tubes 2S, the multiple secondary flat tubes 2S being spaced apart in the width direction of the flat tube 2; and the through-hole 11 in the header wall 10 of the header 1 corresponding to the at least one first flat tube 2A comprises multiple secondary through-holes 11S, the multiple secondary through-holes 11S being spaced apart in the circumferential direction of the header 1, and ends of the multiple secondary flat tubes being respectively inserted into the multiple secondary through-holes and connected to the header wall.
  • the first flat tube 2A comprises multiple secondary flat tubes 2S, the multiple secondary flat tubes 2S being spaced apart in the width direction of the flat tube 2; and the through-hole 11 in the header wall 10 of the header 1 corresponding to the first flat tube 2A comprises multiple secondary through-holes 11S, the multiple secondary through-holes 11S being spaced apart in the circumferential direction of the header 1.
  • adjacent secondary flat tubes 2S in multiple secondary flat tubes 2S of at least one first flat tube 2A in at least one set of first flat tubes 2A are connected via a connecting part 23, the multiple secondary flat tubes 2S being formed integrally with the connecting part 23.
  • adjacent secondary flat tubes 2S of multiple secondary flat tubes 2S of the first flat tube 2A are connected via a connecting part 23, the multiple secondary flat tubes 2S being formed integrally with the connecting part 23, which may be a connecting piece.
  • at least one first flat tube 2A in at least one set of first flat tubes 2A comprises two secondary flat tubes 2S
  • the through-hole 11 in the header wall 10 of the header 1 corresponding to at least one first flat tube 2A comprises two secondary through-holes 11S.
  • the first flat tube 2A comprises two secondary flat tubes 2S
  • the through-hole 11 in the header wall 10 of the header 1 corresponding to the first flat tube 2A comprises two secondary through-holes 11S.
  • a dimension, in the circumferential direction of the header 1, of the through-hole 11 in the header wall 10 of the header 1 corresponding to at least one first flat tube 2A in at least one set of first flat tubes 2A is less than a dimension, in the circumferential direction of the header 1, of the through-hole 11 in the header wall 10 of the header 1 corresponding to the second flat tube 2B.
  • the width of the first flat tube 2A may be less than the width of the second flat tube 2B; alternatively, only the width of the end of the first flat tube 2A may be less than the width of the second flat tube 2B and less than the width of another part of the first flat tube 2A, the other part of the first flat tube 2A having the same width as the second flat tube 2B.
  • the through-hole 11 in the header wall 10 of the header 1 corresponding to at least one first flat tube 2Ain at least one set of first flat tubes 2A is parallel to the through-hole 11 in the header wall 10 of the header 1 corresponding to the second flat tube 2B.
  • the through-hole 11 in the header wall 10 of the header 1 corresponding to at least one first flat tube 2A in at least one set of first flat tubes 2A has a curved shape.
  • the first flat tube 2A has a curved shape; or in a cross section perpendicular to the axial direction of the flat tube 2, only the end of the first flat tube 2A has a curved shape, while another part of the first flat tube 2A has the same shape as the second flat tube 2B.
  • the through-hole 11 in the header wall 10 of the header 1 corresponding to at least one first flat tube 2A in at least one set of first flat tubes 2A is inclined relative to the axial direction of the header 1.
  • the first flat tube 2A is inclined relative to the axial direction of the header 1; or only the end of the first flat tube 2A is inclined relative to the axial direction of the header 1, while another part of the first flat tube 2A is parallel to the second flat tube 2B.
  • At least one first flat tube 2A in at least one set of first flat tubes 2A of the two sets of first flat tubes 2A may be one first flat tube 2A or multiple first flat tubes 2A.
  • the thickness of the spacing wall of the flat tube is increased, thereby enabling the flat tube to be restrained by pulling when the through-hole of the header is subjected to a force, and preventing the through-hole from increasing in size. Furthermore, by reducing the length of the through-hole of the header in the axial direction, deformation of the end of the header can be alleviated, preventing the through-hole from increasing in size. According to an embodiment of the present invention, the axial strength of the header end is enhanced, thereby increasing the final bursting pressure.
  • failure of the flat tubes at the two ends of the header in a strength bursting test can be mitigated, increasing the bursting pressure. At the same time, it is ensured that performance and cost remain virtually unchanged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP21914130.6A 2020-12-30 2021-12-23 Heat exchanger Pending EP4273490A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202023331639.8U CN214582619U (zh) 2020-12-30 2020-12-30 换热器
PCT/CN2021/140781 WO2022143393A1 (zh) 2020-12-30 2021-12-23 换热器

Publications (1)

Publication Number Publication Date
EP4273490A1 true EP4273490A1 (en) 2023-11-08

Family

ID=78344619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21914130.6A Pending EP4273490A1 (en) 2020-12-30 2021-12-23 Heat exchanger

Country Status (5)

Country Link
US (1) US20240159468A1 (es)
EP (1) EP4273490A1 (es)
CN (1) CN214582619U (es)
MX (1) MX2023007704A (es)
WO (1) WO2022143393A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214582619U (zh) * 2020-12-30 2021-11-02 丹佛斯有限公司 换热器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212070A1 (de) * 1992-04-10 1993-10-14 Laengerer & Reich Gmbh & Co Wärmeaustauscher, insbesondere Kühler, z. B. Ölkühler
JP5946217B2 (ja) * 2012-12-26 2016-07-05 日本軽金属株式会社 熱交換器における熱交換チューブ及び熱交換チューブの製造方法
CN105091413B (zh) * 2014-05-06 2017-10-13 美的集团股份有限公司 换热器
JP6905895B2 (ja) * 2017-08-28 2021-07-21 マーレベーアサーマルシステムズジャパン株式会社 コンデンサ
CN214582619U (zh) * 2020-12-30 2021-11-02 丹佛斯有限公司 换热器

Also Published As

Publication number Publication date
US20240159468A1 (en) 2024-05-16
MX2023007704A (es) 2023-07-10
CN214582619U (zh) 2021-11-02
WO2022143393A1 (zh) 2022-07-07

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