EP3521746B1 - Flachrohr für wärmetauscher - Google Patents

Flachrohr für wärmetauscher Download PDF

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Publication number
EP3521746B1
EP3521746B1 EP18461516.9A EP18461516A EP3521746B1 EP 3521746 B1 EP3521746 B1 EP 3521746B1 EP 18461516 A EP18461516 A EP 18461516A EP 3521746 B1 EP3521746 B1 EP 3521746B1
Authority
EP
European Patent Office
Prior art keywords
tube
layer
flat
flat tube
curved portion
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.)
Active
Application number
EP18461516.9A
Other languages
English (en)
French (fr)
Other versions
EP3521746A1 (de
Inventor
Adam KOLACZ
Dariusz Potok
Jacek CHLIPALA
Robert BIENIEK
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 Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
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 Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP18461516.9A priority Critical patent/EP3521746B1/de
Priority to CN201910106696.9A priority patent/CN110118504B/zh
Publication of EP3521746A1 publication Critical patent/EP3521746A1/de
Application granted granted Critical
Publication of EP3521746B1 publication Critical patent/EP3521746B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0391—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits a single plate being bent to form one or more conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/003—Multiple wall conduits, e.g. for leak detection
    • 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
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • 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
    • 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
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element

Definitions

  • the invention relates to a tube for a heat exchanger. More particularly, the present invention relates to a flat tube for a heat exchanger used in the automotive industry.
  • the heat exchange can take place between two fluids.
  • the first fluid can be guided through a conduit formed by elements of the heat exchanger.
  • These can be two manifolds connected fluidically by means of tubes.
  • One of the fluids travels through these tubes between said manifolds.
  • the tubes conduct the heat of the first fluid which is then transferred to the second fluid, or vice versa.
  • the tubes can comprise inner fins, for example in form of corrugated sheets, the bent portions of which are in contact with said flat parallel walls of the flat tubes. These fins facilitate the heat exchange.
  • inner fins for example in form of corrugated sheets, the bent portions of which are in contact with said flat parallel walls of the flat tubes.
  • US2009166020A1 describes a fin with both end parts forming a second wall. Each end part of the fin formed a conduit with the corresponding wall of the tube. This solution implies forming the fin with these end parts, and thus a more complex process.
  • JP2012229853A describes a tube which upper and lower walls form two ducts at a side wall. Such a solution solves part of the problem but requires more material, as the wall is generally thicker than the fin.
  • US2009/014164A1 describes numerous configurations, some of which have a duct in a side wall. The fins are formed by the wall itself, which, in addition to generating process costs, involves an increase in material compared to the use of fins.
  • the object of the invention is a flat tube for a heat exchanger, formed by a sheet material and defined by a bottom wall, a top wall and two side walls, wherein at least one of the side walls comprises a first layer and a second layer of the sheet material, characterized in that the first layer has an curved portion forming a conduit together with the second layer.
  • the curved portion has a circular cross-sectional shape defined by radius R.
  • the first layer comprises brazed portions which form a connection with the second layer at the opposing sides of the conduit.
  • the tube further comprises a fin in the space defined by its walls.
  • the figures show a flat tube 10 for a heat exchanger.
  • the heat exchanger can be a charge air cooler, water charge air cooler, condenser, radiator and the like.
  • the flat tube 10 is formed by a sheet material and is defined by a bottom wall 11, a top wall 12 and two side walls 13.
  • the side walls can be completely arcuate or can comprise a flat middle section.
  • the distance between the bottom wall 11 and the top wall 12 defines the height direction H.
  • the distance between the side walls 13 defines the width direction W. This width direction is to be understood to run parallel to the flat, parallel walls 11, 12, while the height direction is to be understood to run perpendicular to the flat, parallel walls 11, 12.
  • At least one of the side walls 13 comprises a first layer 13a and a second layer 13b of the sheet material. This is achieved when the tube is manufactured by folding the sheet material into the shape of the flat tube, wherein two opposing ends of the sheet overlap onto each other.
  • the tube can also be manufactured from two parts, i.e. a bottom part and a upper part, the side walls being created when respective walls are connected in a layered manner. In either case, the layers can be connected by brazing.
  • the first layer 13a has an curved portion 14 forming a conduit 15 together with the second layer 13b.
  • This conduit can be closed so that it can guide the fluid between the first layer 13a and the second layer 13b.
  • the curved portion 14 protrudes into the inner space of the tube in the width direction and thereby prevents creation of the air bypass when a corrugated fin is placed in the tube.
  • the degree of protrusion of the curved portion can be selected depending on the tube and dimensions, so that the unoccupied space between the fin 16 and side wall 13 is minimized.
  • the curved portion 14 can have a circular cross-sectional shape defined by radius R.
  • the R can be 2,4 mm.
  • the first layer 13a comprises brazed portions 16 which form a connection with the second layer 13b at the opposing sides of the conduit 15, that is on the bottom and the top of the side wall 13 along the height direction. This provides improves the rigidness of the tube.

Claims (3)

  1. Flachrohr für einen Wärmetauscher, das durch ein Blechmaterial gebildet ist und durch eine untere Wand (11), eine obere Wand (12) und zwei Seitenwände (13) definiert wird, wobei das Flachrohr ferner eine Wellrippe (16) in dem zwischen seinen Wänden (11, 12, 13) definierten Raum umfasst, wobei mindestens eine der Seitenwände (13) eine erste Schicht (13a) und eine zweite Schicht (13b) aus dem Blechmaterial umfasst, wobei die erste Schicht (13a) einen gekrümmten Abschnitt (14) aufweist, der zusammen mit der zweiten Schicht (13b) eine Leitung (15) bildet, wobei der gekrümmte Abschnitt (14) in Breitenrichtung in den Innenraum des Rohrs ragt und dadurch bei Platzieren der Wellrippe (16) in dem Rohr die Schaffung eines Luft-Bypasses verhindert, wobei die erste Schicht (13a) hartgelötete Abschnitte umfasst, die an den gegenüberliegenden Seiten der Leitung (15) eine Verbindung mit der zweiten Schicht (13b) bilden.
  2. Flachrohr nach Anspruch 1, wobei der gekrümmte Abschnitt (14) eine durch den Radius R definierte kreisförmige Querschnittsform aufweist.
  3. Flachrohr nach Anspruch 2, wobei das Rohr eine Höhe H = 7,5 mm und eine Breite W = 100 mm aufweist und ein gekrümmter Abschnitt 14 einen Radius R = 2,4 mm aufweist.
EP18461516.9A 2018-02-06 2018-02-06 Flachrohr für wärmetauscher Active EP3521746B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18461516.9A EP3521746B1 (de) 2018-02-06 2018-02-06 Flachrohr für wärmetauscher
CN201910106696.9A CN110118504B (zh) 2018-02-06 2019-02-02 扁平管

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18461516.9A EP3521746B1 (de) 2018-02-06 2018-02-06 Flachrohr für wärmetauscher

Publications (2)

Publication Number Publication Date
EP3521746A1 EP3521746A1 (de) 2019-08-07
EP3521746B1 true EP3521746B1 (de) 2023-04-19

Family

ID=61187256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18461516.9A Active EP3521746B1 (de) 2018-02-06 2018-02-06 Flachrohr für wärmetauscher

Country Status (2)

Country Link
EP (1) EP3521746B1 (de)
CN (1) CN110118504B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU101492B1 (en) * 2019-11-25 2021-05-26 Ht Holding Luxembourg S A Flat heat exchanger tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090014164A1 (en) * 2006-01-19 2009-01-15 Werner Zobel Flat tube, flat tube heat exchanger, and method of manufacturing same
EP3623738A1 (de) * 2017-07-14 2020-03-18 Japan Climate Systems Corporation Wärmetauscherröhre

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690233B1 (fr) * 1992-04-21 1994-06-03 Valeo Thermique Moteur Sa Tube d'echangeur de chaleur a dispositif perturbateur integre.
US6192977B1 (en) 1999-09-29 2001-02-27 Valeo Thermique Moteur Tube for heat exchanger
DE10219867A1 (de) * 2002-05-03 2003-11-20 Behr Gmbh & Co Wärmetauscher, insbesondere Ladeluftkühler
EP1774241A2 (de) * 2004-07-28 2007-04-18 Valeo Inc. Fahrzeugwärmetauscheranordnungen mit internen rippen und herstellungsverfahren dafür
US20080078536A1 (en) 2006-09-29 2008-04-03 International Truck Intellectual Property Company, Llc Corrosion resistant bi-metal charge air cooler
DE102007006664A1 (de) * 2007-02-10 2008-08-14 Modine Manufacturing Co., Racine Flachrohr für Wärmetauscher
JP2012229853A (ja) * 2011-04-26 2012-11-22 Showa Denko Kk 熱交換器
DE102012211350A1 (de) * 2012-06-29 2014-01-02 Behr Gmbh & Co. Kg Flachrohr und Wärmeübertrager mit einem solchen Flachrohr

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090014164A1 (en) * 2006-01-19 2009-01-15 Werner Zobel Flat tube, flat tube heat exchanger, and method of manufacturing same
EP3623738A1 (de) * 2017-07-14 2020-03-18 Japan Climate Systems Corporation Wärmetauscherröhre

Also Published As

Publication number Publication date
CN110118504B (zh) 2023-04-28
EP3521746A1 (de) 2019-08-07
CN110118504A (zh) 2019-08-13

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