EP4553439A1 - Rohr für einen wärmetauscher - Google Patents

Rohr für einen wärmetauscher Download PDF

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Publication number
EP4553439A1
EP4553439A1 EP23209181.9A EP23209181A EP4553439A1 EP 4553439 A1 EP4553439 A1 EP 4553439A1 EP 23209181 A EP23209181 A EP 23209181A EP 4553439 A1 EP4553439 A1 EP 4553439A1
Authority
EP
European Patent Office
Prior art keywords
flat tube
wall
protrusion
inner fin
fluid
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.)
Withdrawn
Application number
EP23209181.9A
Other languages
English (en)
French (fr)
Inventor
Mateusz LIPOWSKI
Lukasz WIDZYK
Grzegorz BASISTA
Damian JURKIEWICZ
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Priority to EP23209181.9A priority Critical patent/EP4553439A1/de
Publication of EP4553439A1 publication Critical patent/EP4553439A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F2001/027—Tubular elements of cross-section which is non-circular with dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements

Definitions

  • the present invention relates to a tube for a heat exchanger.
  • the present invention relates to a tube for a heat exchanger that comprises an inner fin.
  • a heat exchanger comprises a plurality of flat tubes through which a first fluid flows.
  • the first fluid flowing inside the flat tube exchanges heat with a second fluid flowing outside the flat tube.
  • the flat tube comprises two longer sides joined by two shorter sides.
  • the flat tube further comprises an inner fin to increase heat exchange of the first fluid with the second fluid.
  • the inner fin provided inside the flat tube is in contact with the two longer sides of the flat tube.
  • the inner fin provided inside the flat tube further may not be in contact with at least one of the two shorter sides of the flat tube due to some reasons like welding joint, shorter width upon forming and so on. Therefore, the first fluid may flow through a space between the inner fin and the at least one of the two shorter sides of the flat tube that is not in contact with the inner fin and consequently, the heat exchange performance is reduced.
  • An objective of the present invention is to provide a flat tube for a heat exchanger that alleviates the problems in the prior arts.
  • an objective of the present invention is to block a space between an inner fin and at least one of two short sides of the flat tube that is not in contact with the inner fin.
  • Another objective of the present invention is to guide a fluid flowing in the flat tube towards the inner fin.
  • the present invention herein provides a flat tube for a heat exchanger.
  • the flat tube for the heat exchanger for a flow of a fluid comprising: a longitudinal axis along which the flat tube extends; a first wall being substantially flat, a second wall being substantially flat and parallel to the first wall and two side walls joining the first wall and the second wall, wherein the first wall, the second wall and the two side walls together form a hollow profile of the flat tube, thereby forming a fluid passage for the flow of the fluid; at least one inner fin provided in the fluid passage, is meandering substantially transversely to the longitudinal axis between the first wall and the second wall; and at least one protrusion protruding from the at least one of the two side walls, is configured to at least partially block the flow of fluid in the vicinity of the at least one of the two side walls.
  • a tip portion of the at least one protrusion is in contact with the inner fin.
  • the tip portion of the at least one protrusion is not in contact with the inner fin.
  • the at least one protrusion comprises a guiding means configured to guide the fluid towards the inner fin.
  • the guiding means has a curved shape.
  • the at least one protrusion is provided proximate to an inlet of the flat tube.
  • the at least one protrusion is a dimple.
  • a plurality of protrusions are provided in the at least one of the two side walls.
  • all protrusions from the plurality of protrusions are identical.
  • At least one protrusion from the plurality of protrusions is different compared to other protrusions from the plurality of protrusions.
  • the present invention herein provides a heat exchanger.
  • the heat exchanger comprises: at least one flat tube according to any one of the above embodiments.
  • the flat tube comprises at least one protrusion protruding from the at least one of the two side walls of the flat tube.
  • the at least one protrusion comprises the guiding means configured to guide the fluid towards the inner fin. Therefore, the at least one protrusion at least partially blocks the flow of fluid in the vicinity of the at least one of the two side walls, and guides the fluid towards the inner fin.
  • some elements or parameters may be indexed, such as a first element and a second element.
  • this indexation is only meant to differentiate and name elements that are similar but not identical. No idea of priority should be inferred from such indexation, as these may be switched without betraying the invention. Additionally, this indexation does not imply any order in mounting or use of the elements of the invention.
  • FIG. 1 illustrates a flat tube 100 for a heat exchanger, in accordance with an embodiment of the present invention.
  • FIG. 2 illustrates an exploded view of the flat tube 100 of FIG. 1 .
  • the flat tube 100 for the heat exchanger comprises a fluid passage 110 through which a fluid flows, at least one inner fin 112 provided in the fluid passage 110 and at least one protrusion 114 protruding towards the inner fin 112, is provided in the fluid passage 110.
  • the tube 100 for the heat exchanger can comprise a longitudinal axis L1 along which the flat tube 100 extends.
  • the flat tube 100 can comprise a plurality of walls 102, 104, 106, 108 forming the fluid passage 110 through which the fluid flows.
  • the flat tube 100 for the heat exchanger can comprise the at least one inner fin 112 provided in the fluid passage 110, wherein the fluid flows across the at least one inner fin 112 in the fluid passage 110.
  • the flat tube 100 for the heat exchanger can comprise the at least one protrusion 114 protruding towards the inner fin 112, wherein the at least one protrusion 114 is protruding from the at least one wall 102, 104 from the plurality of walls 102, 104, 106, 108 of the flat tube 100.
  • the plurality of walls 102, 104, 106, 108 of the flat tube 100 can have a polygon shape.
  • the plurality of walls 102, 104, 106, 108 of the flat tube 100 can have a rectangle shape with a first wall 106 being substantially flat, a second wall 108 being substantially flat and parallel to the first wall 106 and two side walls 102, 104 joining the first wall 106 and the second wall 108.
  • the inner fin 112 provided in the flat tube 100 can be meandering substantially transversely to the longitudinal axis L1 between the first wall 106 and the second wall 108 of the flat tube 100.
  • the inner fin 112 provided in the flat tube 100 can be in contact with the first wall 106 and the second wall 108 of the flat tube 100.
  • the inner fin 112 provided in the flat tube 100 cannot be in contact with at least one of the two side walls 102, 104 of the flat tube 100 due to some reasons like welding joint, reduced width upon forming and so on.
  • the at least one protrusion 114 can be protruding from at least one of the two side walls 102, 104 of the flat tube 100. In another example, the at least one protrusion 114 can be protruding from one side wall 102 of the flat tube 100. In another example, the at least one protrusion 114 can be protruding from two side walls 102, 104 of the flat tube 100. In another aspect, the at least one protrusion 114 can be formed in the tube 100 by any type of manufacturing process. In another example, the at least one protrusion 114 and the tube 100 can be made as a single part. The at least one protrusion 114 can be formed in the tube 100 when the tube 100 is manufactured, for example, by forming process. In another example, the at least one protrusion 114 and the tube 100 can be made as separate parts and then can be connected together.
  • FIG. 3 illustrates a sectional view of the flat tube 100 of FIG. 1 , at the plane A-A'.
  • FIG. 4 illustrates an enlarged view of the protrusion 114 without the inner fin 112 of the flat tube 100 of FIG. 3 .
  • FIG. 5 illustrates an enlarged view of the protrusion 114 with the inner fin 112 of the flat tube 100 of FIG. 3 .
  • the at least one protrusion 114 can be configured to at least partially block the flow of fluid in the vicinity of the at least one of the two side walls 102, 104.
  • the at least one protrusion 114 can significantly block a space between the inner fin 112 and the at least one of the two side walls 102, 104 of the flat tube 100.
  • the at least one protrusion 114 protruding from the at least one of the two side walls 102, 104 of the flat tube 100 can comprise a tip portion that can be in contact with the inner fin 112.
  • the tip portion of the at least one protrusion 114 protruding from the at least one of the two side walls 102, 104 of the tube 100 cannot be in contact with the inner fin 112.
  • the at least one protrusion 114 can comprise a guiding means configured to guide the fluid towards the inner fin 112.
  • the guiding means can have any shape adapted to guide the fluid towards the inner fin 112.
  • the guiding means can have a curved shape.
  • the fluid can be guided to flow across the fin 112 and not bypass the fin 112.
  • the at least one protrusion 114 can have any shape that is protruding from the at least one of the two side walls 102, 104 of the flat tube 100.
  • the at least one protrusion 114 can be a dimple.
  • the at least one protrusion 114 can be a curved rib.
  • a plurality of protrusions 114 can be protruding from the at least one of the two side walls 102, 104 of the flat tube 100. In another example, the plurality of protrusions 114 can be protruding from one side wall 102 of the flat tube 100. In another example, the plurality of protrusions 114 can be protruding from two side walls 102, 104 of the flat tube 100.
  • the plurality of protrusions 114 can comprise a first plurality of protrusions 114A and a second plurality of protrusions 114B.
  • the first plurality of protrusions 114A can be protruding from one side wall 102 of the flat tube 100 and the second plurality of protrusions 114B can be protruding from another side wall 104 of the flat tube 100.
  • the first plurality of protrusions 114A can be identical or different compared to the second plurality of protrusions 114B.
  • the first plurality of protrusions 114A can be identical to the second plurality of protrusions 114B in terms of characteristics such as shape, interval and so on.
  • the first plurality of protrusions 114A can be different compared to the second plurality of protrusions 114B in terms of at least one characteristics such as shape, interval and so on.
  • the flat tube 100 comprises at least one protrusion 114 protruding from the at least one of the two side walls 102, 104 of the flat tube 100.
  • the at least one protrusion 114 comprises the guiding means configured to guide the fluid towards the inner fin 112. Therefore, the at least one protrusion 114 at least partially blocks the flow of the fluid in the vicinity of the at least one of the two side walls 102, 104, and guides the fluid towards the inner fin 112.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP23209181.9A 2023-11-10 2023-11-10 Rohr für einen wärmetauscher Withdrawn EP4553439A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23209181.9A EP4553439A1 (de) 2023-11-10 2023-11-10 Rohr für einen wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23209181.9A EP4553439A1 (de) 2023-11-10 2023-11-10 Rohr für einen wärmetauscher

Publications (1)

Publication Number Publication Date
EP4553439A1 true EP4553439A1 (de) 2025-05-14

Family

ID=88779789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23209181.9A Withdrawn EP4553439A1 (de) 2023-11-10 2023-11-10 Rohr für einen wärmetauscher

Country Status (1)

Country Link
EP (1) EP4553439A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004061032A (ja) * 2002-07-30 2004-02-26 Toyo Radiator Co Ltd インナーフィンを有する熱交換器用偏平チューブ
JP2005214511A (ja) * 2004-01-29 2005-08-11 Calsonic Kansei Corp 熱交換器
JP2012229853A (ja) * 2011-04-26 2012-11-22 Showa Denko Kk 熱交換器
EP3521746B1 (de) * 2018-02-06 2023-04-19 Valeo Autosystemy SP. Z.O.O. Flachrohr für wärmetauscher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004061032A (ja) * 2002-07-30 2004-02-26 Toyo Radiator Co Ltd インナーフィンを有する熱交換器用偏平チューブ
JP2005214511A (ja) * 2004-01-29 2005-08-11 Calsonic Kansei Corp 熱交換器
JP2012229853A (ja) * 2011-04-26 2012-11-22 Showa Denko Kk 熱交換器
EP3521746B1 (de) * 2018-02-06 2023-04-19 Valeo Autosystemy SP. Z.O.O. Flachrohr für wärmetauscher

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