EP0819908A2 - Gewalzter Abschnitt für Wärmetauscher und Herstellungsverfahren - Google Patents

Gewalzter Abschnitt für Wärmetauscher und Herstellungsverfahren Download PDF

Info

Publication number
EP0819908A2
EP0819908A2 EP97111302A EP97111302A EP0819908A2 EP 0819908 A2 EP0819908 A2 EP 0819908A2 EP 97111302 A EP97111302 A EP 97111302A EP 97111302 A EP97111302 A EP 97111302A EP 0819908 A2 EP0819908 A2 EP 0819908A2
Authority
EP
European Patent Office
Prior art keywords
fins
rolling
micro
rolled
production
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Withdrawn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
EP97111302A
Other languages
English (en)
French (fr)
Other versions
EP0819908A3 (de
Inventor
Giuseppe De Santo
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.)
Alcan Alluminio SpA
Original Assignee
Alcan Alluminio SpA
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 Alcan Alluminio SpA filed Critical Alcan Alluminio SpA
Publication of EP0819908A2 publication Critical patent/EP0819908A2/de
Publication of EP0819908A3 publication Critical patent/EP0819908A3/de
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/005—Rolls with a roughened or textured surface; Methods for making same

Definitions

  • This invention proposes a rolled section, in particular a metallic rolled section, for instance copper, aluminium or similar, for the realization of heat exchangers and in particular for the realization of little fins to be used in this kind of apparatuses.
  • the rolled section according to the invention presents, on one or both sides, a series of scoring or micro-fins which determine a considerable increase of the exchange surface without for this reason affecting the total size of the exchanger.
  • Rolled sections according to the invention can be applied in a particularly advantageous way if they are used for the production of the little fins used by exchangers, but it is clear that the invention is not limited to this specific use and includes also the use of such rolled sections for the realization of tubes, ducts, walls and all parts in general that form a heat exchanger.
  • the invention concerns also the method for the production of these rolled sections.
  • the exchanger body that can be formed by a tube, a coil, a wall or similar, is generally provided with a plurality of little fins which, increasing the contact surface between the exchanger and the fluid that cedes or absorbs the heat, increases its efficiency.
  • the apparatuses themselves are susceptible of further improvement and this invention is intended as added to this sector.
  • the invention proposes a rolled section for the realization of heat exchangers that is characterized by the fact that it provides, on one or both surfaces, a series of scoring or micro-fins, suitable to noticeably increase the exchange surface with the refrigerating or heating fluid.
  • a rolled section according to the invention that presents, on at least one of the sufaces, in the specific case on the upper surface 2, a series of grooves 3 which produce the same number of parts in relief or micro-fins 4.
  • the upper surface of the panel is about 1.7 times the lower surface; changing appropriately the height and the configuration of the little-fins, it is therefore easy to double the width of the surface in contact with a refrigerating or heating fluid.
  • the invention concerns also a process for the production of rolled sections that provides the following steps:
  • the roll or rolls of the second rolling-mill could be produced with the technique of photogravure, realizing the drawing of the scoring on a support that is then applied onto the surface of the roll. This surface is then treated with an acid in appropriate concentration and for a predetermined period of time, so as to realize engraving having the needed depth.
  • the form and size of the little fins could vary within wide limits, in funcion of the material to be treated and of the required result.
  • Aluminium rolled sections were produced having a thickness of about 0,30 mm and presenting a scored surface with little fins with the above specified size.
  • the rolled sections could present one or both scored surfaces with micro-fins, while in other cases, for instance when the rolled section is used for the production of tubes or other components of an exchanger, a surface, for instance the inner one, could be smooth and the micro-fins could be provided only on the outer surface in contact with air.
  • the rolled sections according to the invention thanks to the above described characteristics, allow the reduction, at the same efficiency rate, of the size of the exchanger or the noticeable improvement of its characteristics without increasing the volume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metal Rolling (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
EP97111302A 1996-07-19 1997-07-04 Gewalzter Abschnitt für Wärmetauscher und Herstellungsverfahren Withdrawn EP0819908A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96MI001514A IT1283468B1 (it) 1996-07-19 1996-07-19 Laminato per la realizzazione di scambiatori di calore e relativo metodo di produzione
ITMI961514 1996-07-19

Publications (2)

Publication Number Publication Date
EP0819908A2 true EP0819908A2 (de) 1998-01-21
EP0819908A3 EP0819908A3 (de) 1999-06-09

Family

ID=11374625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111302A Withdrawn EP0819908A3 (de) 1996-07-19 1997-07-04 Gewalzter Abschnitt für Wärmetauscher und Herstellungsverfahren

Country Status (2)

Country Link
EP (1) EP0819908A3 (de)
IT (1) IT1283468B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6531206B2 (en) 2001-02-07 2003-03-11 3M Innovative Properties Company Microstructured surface film assembly for liquid acquisition and transport
EP1202018A3 (de) * 2000-10-27 2004-04-07 Alcoa Inc. Mikrotexturierte Wärmetauschoberfläche
FR2854945A1 (fr) * 2003-05-15 2004-11-19 Cie Ind D Applic Thermiques Ci Echangeur de chaleur a plaques, plaque appartenant a un tel echangeur et utilisation d'un tel echangeur
EP1538415A1 (de) * 2003-12-01 2005-06-08 Balcke-Dürr GmbH Strömungskanal
WO2013079665A1 (de) * 2011-12-02 2013-06-06 Wickeder Westfalenstahl Gmbh Wärmetauscher
US10807163B2 (en) 2014-07-14 2020-10-20 Raytheon Technologies Corporation Additive manufactured surface finish

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885622A (en) * 1971-12-30 1975-05-27 Olin Corp Heat exchanger tube
DE3010450A1 (de) * 1980-03-19 1981-09-24 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Rohr fuer waermetauscherzwecke, insbesondere fuer verdampfer
FR2539499A1 (fr) * 1983-01-14 1984-07-20 Degrolard Raymond Tubes a micro-ailettes
US4996113A (en) * 1989-04-24 1991-02-26 Aluminum Company Of America Brightness enhancement with textured roll
US5332034A (en) * 1992-12-16 1994-07-26 Carrier Corporation Heat exchanger tube
DE19510124A1 (de) * 1995-03-21 1996-09-26 Km Europa Metal Ag Austauscherrohr für einen Wärmeaustauscher
DE19636367A1 (de) * 1996-09-06 1998-03-12 Emitec Emissionstechnologie Verfahren und Vorrichtungen zum Herstellen eines Metallbleches mit einer Wellung und einer quer dazu liegenden Mikrostruktur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1202018A3 (de) * 2000-10-27 2004-04-07 Alcoa Inc. Mikrotexturierte Wärmetauschoberfläche
US6925711B2 (en) 2000-10-27 2005-08-09 Alcoa Inc. Micro-textured heat transfer surfaces
US6531206B2 (en) 2001-02-07 2003-03-11 3M Innovative Properties Company Microstructured surface film assembly for liquid acquisition and transport
WO2002062568A3 (en) * 2001-02-07 2003-09-04 3M Innovative Properties Co Microstructured surface film for liquid acquisition and transport
US6746567B2 (en) 2001-02-07 2004-06-08 3M Innovative Properties Company Microstructured surface film assembly for liquid acquisition and transport
FR2854945A1 (fr) * 2003-05-15 2004-11-19 Cie Ind D Applic Thermiques Ci Echangeur de chaleur a plaques, plaque appartenant a un tel echangeur et utilisation d'un tel echangeur
WO2004102100A3 (fr) * 2003-05-15 2005-03-31 Ciat Sa Plaque d'echange thermique, son procede de fabrication, echangeur de chaleur a plaques correspondant et son utilisation
EP1538415A1 (de) * 2003-12-01 2005-06-08 Balcke-Dürr GmbH Strömungskanal
WO2013079665A1 (de) * 2011-12-02 2013-06-06 Wickeder Westfalenstahl Gmbh Wärmetauscher
US10807163B2 (en) 2014-07-14 2020-10-20 Raytheon Technologies Corporation Additive manufactured surface finish
EP2975351B1 (de) * 2014-07-14 2023-11-01 RTX Corporation Additiv hergestellte oberflächenbehandlung

Also Published As

Publication number Publication date
ITMI961514A1 (it) 1998-01-19
EP0819908A3 (de) 1999-06-09
ITMI961514A0 (de) 1996-07-19
IT1283468B1 (it) 1998-04-21

Similar Documents

Publication Publication Date Title
US6925711B2 (en) Micro-textured heat transfer surfaces
US6164370A (en) Enhanced heat exchange tube
US2740188A (en) Method of making a heat exchanger element
DE4311978C1 (de) Verfahren zur Beulverformung dünner Wände und Folien
ATE214309T1 (de) Verfahren zur herstellung von flachröhren für wärmetauscher
EP1137905A2 (de) Wärmeaustauschrohr mit polyedrischer struktur
EP0819908A2 (de) Gewalzter Abschnitt für Wärmetauscher und Herstellungsverfahren
CN109604367B (zh) 变厚度折叠式微通道扁管的辊弯成形装置及成形方法
US4886713A (en) Deep drawable aluminum sheet or strip
RU96107885A (ru) Способ и устройство для производства металлических холоднокатаных листов или полос, полученные металлические листы или полосы
JP2000176513A (ja) 調質圧延用ロール、調質圧延方法および調質圧延金属板
CN108296717A (zh) 一种轴承钢管的制备工艺
NO164315B (no) Anordning ved kjerneopptakerverktoey.
US3377683A (en) Method of making a heat exchanger
DE60130946T2 (de) Verbesserter Hochleistungsverdampfer für Kühlschränke und Tiefgefriervorrichtungen
US3839975A (en) Method of reshaping passageways in metal strip-type tubing
CN113857288B (zh) 一种高效换热管生产方法
EP2280792B1 (de) Verfahren zum kontinuierlichen fügen von zwei teilen sowie durch das verfahren hergestellte verbindung
US3820215A (en) Method of making a curved spined heat exchanger tube
JP3084535B2 (ja) 熱交換器用内部仕切壁付偏平チューブの成形方法
US11305329B2 (en) Tubing with hydrophobic surface
JP3752046B2 (ja) 伝熱管及びその製造方法
DE19823790A1 (de) Lithoband, Druckplattenträger und Verfahren zur Herstellung eines Lithobandes, eines Druckplattenträgers oder einer Offset-Druckplatte
JPH01208697A (ja) 熱交換器プレートフィン用アルミニウム表面処理薄板
JP2812786B2 (ja) 細径内面溝付管の製造方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: LT PAYMENT 970715;LV PAYMENT 970715;SI PAYMENT 970715

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: LT PAYMENT 19970715;LV PAYMENT 19970715;SI PAYMENT 19970715

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: LT PAYMENT 19970715;LV PAYMENT 19970715;SI PAYMENT 19970715

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19991210