EP0865838B1 - Tube pour échangeur de chaleur et méthode pour fabriquer un tel tube - Google Patents

Tube pour échangeur de chaleur et méthode pour fabriquer un tel tube Download PDF

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Publication number
EP0865838B1
EP0865838B1 EP98630007A EP98630007A EP0865838B1 EP 0865838 B1 EP0865838 B1 EP 0865838B1 EP 98630007 A EP98630007 A EP 98630007A EP 98630007 A EP98630007 A EP 98630007A EP 0865838 B1 EP0865838 B1 EP 0865838B1
Authority
EP
European Patent Office
Prior art keywords
tube
fin
heat transfer
angle
convolution
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.)
Expired - Lifetime
Application number
EP98630007A
Other languages
German (de)
English (en)
Other versions
EP0865838A1 (fr
Inventor
Neelkanth S. Gupte
Steven J. Spencer
Daniel P. Gaffaney
Xin Liu
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.)
Carrier Corp
Original Assignee
Carrier Corp
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 US08/814,471 external-priority patent/US5933953A/en
Application filed by Carrier Corp filed Critical Carrier Corp
Publication of EP0865838A1 publication Critical patent/EP0865838A1/fr
Application granted granted Critical
Publication of EP0865838B1 publication Critical patent/EP0865838B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides
    • 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
    • F28F1/34—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 obliquely
    • F28F1/36—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 obliquely the means being helically wound fins or wire spirals
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with 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
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators

Definitions

  • refrigerant is cooled and condenses through heat transfer to the fluid through the walls of the tubes.
  • the heat transfer capability of such a heat exchanger is largely determined by the heat transfer characteristics of the individual tubes.
  • the external configuration of an individual tube is important in establishing its overall heat transfer characteristics.
  • the relatively sharp spike tips promote drainage and spreading of refrigerant from the fin.
  • the tubes in a shell and tube type air conditioning heat exchanger run horizontally or nearly so.
  • the notched and split fin configuration promotes drainage of condensing refrigerant from the fins into the grooves between fins on the upper portion of the tube surface and also promotes drainage of condensed refrigerant off the tube on the lower portion of the tube surface.
  • the sharp tips and notches, and low surface tension of refrigerant aid in liquid spreading on the tube surface and along the tube axis. This promotes good wettability in a horizontal shell and tube falling film evaporator.
  • the tube of the present invention may be readily manufactured by a rolling process.
  • FIG. 2 illustrates such a process.
  • finning machine 60 is operating on tube 10, which is made of a malleable metal such as copper, to produce both interior ribs and exterior fins on the tube.
  • Finning machine 60 has one or more tool arbors 61, each containing a tool gang 62, comprised of a number of finning disks 63, notching disk 66 and splitting disk 67.
  • Extending into the tube is mandrel shaft 65 to which is attached mandrel 64.
  • Mandrel 64 may be configured in such a way, as shown in FIG. 2, that it will impress some type of pattern into the internal surface 12 of the wall of the tube passing over it.
  • a typical pattern is of one or more helical rib convolutions. Such a pattern can improve the rate of heat transfer between the fluid flowing through the tube and the tube wall.
  • FIG. 4 is a plan view of a portion of a single fin convolution of the tube of the present invention.
  • the angle of inclination of notch base 31 from tube longitudinal axis A T is angle ⁇ .
  • the angle of inclination of the distal tip 23 of fin 22 from longitudinal axis of the tube A T is angle ⁇ .
  • the interaction between rotating and advancing tube 10 and notching wheel 66 may result in the axis of fin spike 22, indicated in FIG. 4, is turned slightly from the angle between the teeth of the notching wheel and the fin convolution so that tip axis angle ⁇ is oblique with respect to angle ⁇ , i.e., ⁇ ⁇ ⁇ .
  • it is possible to have ⁇ ⁇ as a specific case. It is this turning of the spike that allows the splitting disk 67 to reliably split the spike because the notched spike presents a wider face for splitting than would the unnotched fin convolution.
  • FIG. 5 is a pseudo sectioned elevation view of two adjacent fin convolutions of the tube embodying the present invention.
  • the term pseudo is used because it is unlikely that a section taken through any part of the fin convolutions would look exactly as the section depicted in FIG. 5.
  • the figure, however, serves to illustrate many of the features of the tube.
  • Fin convolutions 20A and 20B extend outward from tube wall 11.
  • Fin convolutions 20A and 20B have proximal portions 21 and spike portions 22.
  • Extending through fin convolution 20A is a notch having notch base 32.
  • the overall height of fin convolutions 20A and 20B is H f .
  • the width of proximal portion 21 is W r and the width of spike portion 22 at its widest dimension is W t .
  • the outer extremity of spike 22 has two distal tips 23.
  • the notch penetrates into the fin convolution to height H n above inner wall surface 13.

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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Metal Extraction Processes (AREA)

Claims (6)

  1. Procédé de fabrication d'une surface de transfert thermique sur une paroi externe (11) d'un tube (10), comprenant les étapes consistant à :
    soutenir l'intérieur dudit tube (10) avec un mandrin intérieur (64) ;
    presser une batterie (62) de disques de taille d'ailettes en rotation (63) contre la paroi externe (11) dudit tube (10) de façon à former une circonvolution d'ailettes (20), et faire tourner et progresser axialement ledit tube (10) par rapport auxdits disques (63) ;
    encocher ladite circonvolution d'ailettes (20), sur ledit tube en rotation et en progression (10), à des intervalles tout autour de la circonférence dudit tube (10) de façon à former des picots (22) dans ladite circonvolution d'ailettes (20), chacun desdits picots (22) ayant une extrémité proximale formée d'un seul tenant avec ladite paroi de tube (11) et une extrémité distale ; et
    entailler lesdites extrémités distales desdits picots (22) de façon à former deux pointes distales (23) dans chaque picot (22),
       caractérisé en ce qu'il comprend l'opération consistant à torsader lesdits picots (22) simultanément à ladite étape d'encochage de telle façon que ladite extrémité distale soit disposée à un certain angle par rapport à ladite extrémité proximale.
  2. Procédé selon la revendication 1, caractérisé en ce que ladite étape d'encochage déplace la matière pour former lesdites pointes distales (23), ladite matière déplacée engendrant une largeur Wr dudit picot (22) à son extrémité distale.
  3. Tube de transfert thermique (10) ayant une surface externe qui comprend :
    au moins une circonvolution d'ailettes (20) disposée de façon hélicoïdale autour de ladite surface externe ;
    des encoches (30) s'étendant radialement dans ladite circonvolution d'ailettes à des intervalles tout autour de la circonférence dudit tube, chacune desdites encoches ayant une base qui se trouve à un angle α par rapport à l'axe longitudinal (AT) dudit tube ;
    lesdites encoches divisant la circonvolution d'ailettes en picots à ailettes (22), lesdits picots étant entaillés et ayant chacun une partie proximale (21) et une partie distale ayant deux pointes distales (23) ;
    chaque picot entaillé étant situé entre une paire d'encoches adjacentes et ayant une largeur maximale Wt qui est supérieure à la largeur maximale Wr de ladite partie proximale,
       caractérisé en ce que la partie distale de chaque picot à ailettes entaillé (22) est torsadée par rapport à la partie proximale de celui-ci de telle façon que l'angle β de la partie distale du picot à ailettes (22) par rapport à l'axe longitudinal (AT) du tube (10) soit oblique par rapport à l'angle α entre la base et l'axe longitudinal (AT) du tube.
  4. Tube de transfert thermique selon la revendication 3, caractérisé en ce que le pas d'ailettes (Pf) est compris entre 0,38 et 0,76 millimètre (entre 0,015 et 0,030 pouce) ;
    ledit tube (10) a un diamètre externe Do, ladite circonvolution d'ailettes (20) a une hauteur d'ailette Hf et le rapport Hf/Do de ladite hauteur d'ailette audit diamètre est compris entre 0,026 et 0,067 ;
    le nombre desdites encoches (30) dans une circonvolution d'ailettes (20) par circonférence de tube est de 60 à 190 ;
    l'angle α entre ladite base d'encoche et ledit axe longitudinal de tube (AT) est compris entre 30 et 65 degrés ;
    ladite base d'encoche (32) ayant une hauteur de base d'encoche (Hn) qui est comprise entre 0,50 et 0,80 de ladite hauteur d'ailette ;
    lesdites pointes distales (23) s'écartent l'une de l'autre vers l'extérieur à un angle d'entaille δ ; et
    ledit angle de partie distale de picot β est compris entre 20 et 65 degrés.
  5. Tube de transfert thermique selon la revendication 4, caractérisé en ce que ledit angle d'entaille δ est compris entre 70 et 130 degrés.
  6. Tube de transfert thermique selon la revendication 4, caractérisé en ce que ledit pas d'ailettes est compris entre 0,42 et 0,60 millimètre,
    ledit angle d'encoche est de 50 degrés,
    le nombre d'encoches (30) dans une circonvolution d'ailettes (20) par circonférence de tube est compris entre 110 et 140 et
    ladite hauteur de base d'encoche est comprise entre 0,50 et 0,80 de ladite hauteur d'ailette.
EP98630007A 1997-03-17 1998-02-27 Tube pour échangeur de chaleur et méthode pour fabriquer un tel tube Expired - Lifetime EP0865838B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US820472 1986-01-17
US82047297A 1997-03-17 1997-03-17
US08/814,471 US5933953A (en) 1997-03-17 1997-03-17 Method of manufacturing a heat transfer tube
US814471 2001-03-21

Publications (2)

Publication Number Publication Date
EP0865838A1 EP0865838A1 (fr) 1998-09-23
EP0865838B1 true EP0865838B1 (fr) 2002-05-08

Family

ID=27123850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98630007A Expired - Lifetime EP0865838B1 (fr) 1997-03-17 1998-02-27 Tube pour échangeur de chaleur et méthode pour fabriquer un tel tube

Country Status (7)

Country Link
EP (1) EP0865838B1 (fr)
JP (1) JP2945649B2 (fr)
KR (1) KR100324065B1 (fr)
CN (1) CN100347512C (fr)
AU (1) AU722999B2 (fr)
CA (1) CA2230213C (fr)
ES (1) ES2174408T3 (fr)

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ATE412866T1 (de) * 2002-06-10 2008-11-15 Wolverine Tube Inc Verfahren zur herstellung eines wärmetauscherrohres
US7311137B2 (en) 2002-06-10 2007-12-25 Wolverine Tube, Inc. Heat transfer tube including enhanced heat transfer surfaces
US8573022B2 (en) 2002-06-10 2013-11-05 Wieland-Werke Ag Method for making enhanced heat transfer surfaces
US20060112535A1 (en) 2004-05-13 2006-06-01 Petur Thors Retractable finning tool and method of using
CA2601112C (fr) 2005-03-25 2011-12-13 Wolverine Tube, Inc. Outil servant a realiser des surfaces de transfert thermique ameliorees
DE102007010134A1 (de) * 2007-02-28 2008-09-04 Behr Gmbh & Co. Kg Wärmetauscher, Abgasrückführsystem, Ladeluftzuführsystem und Verwendung des Wärmetauschers
KR101151871B1 (ko) 2010-03-18 2012-05-31 (주)현대기공 터보냉동기의 응축기용 전열관
KR101151872B1 (ko) 2010-03-18 2012-05-31 (주)현대기공 터보냉동기의 증발기용 전열관
CN102147204A (zh) * 2011-03-24 2011-08-10 恩迅（上海）节能科技有限公司 一种节能防腐蚀的省煤器换热管及其制备方法
CN103084813B (zh) * 2011-11-03 2016-11-23 秦彪 太阳花式散热器制造方法及其设备
ITUB20159298A1 (it) * 2015-12-23 2017-06-23 Brembana & Rolle S P A Scambiatore di calore a fascio tubiero e mantello, tubi alettati per tale scambiatore e relativo metodo di produzione.
CN106391914B (zh) * 2016-11-10 2018-07-20 华南理工大学 一种轧制与犁切-挤压三维内外翅片管制造设备与方法
CN106391913B (zh) * 2016-11-10 2018-07-20 华南理工大学 一种基于多刃犁切-挤压的三维内翅片管成型装置及方法
CN107774849A (zh) * 2017-10-27 2018-03-09 华南理工大学 一种蒸发冷凝两用阶梯宫格翅片管的成形刀具和成形方法
DE102017128163A1 (de) * 2017-11-28 2019-05-29 Liebherr-Components Biberach Gmbh Seiltrommel sowie Verfahren zu deren Herstellung
CN108168353B (zh) * 2017-12-28 2019-08-09 无锡市欣明换热新材料科技有限公司 一种冷凝器的冷凝管及其加工装置

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US4179911A (en) * 1977-08-09 1979-12-25 Wieland-Werke Aktiengesellschaft Y and T-finned tubes and methods and apparatus for their making
JPS5927739A (ja) * 1982-08-05 1984-02-14 Kobe Steel Ltd 沸騰伝熱管の製造方法
JPS59100396A (ja) * 1982-11-30 1984-06-09 Kobe Steel Ltd 凝縮伝熱管
US4577381A (en) * 1983-04-01 1986-03-25 Kabushiki Kaisha Kobe Seiko Sho Boiling heat transfer pipes
US4660630A (en) * 1985-06-12 1987-04-28 Wolverine Tube, Inc. Heat transfer tube having internal ridges, and method of making same
US4765058A (en) * 1987-08-05 1988-08-23 Carrier Corporation Apparatus for manufacturing enhanced heat transfer surface
US5203404A (en) * 1992-03-02 1993-04-20 Carrier Corporation Heat exchanger tube
US5332034A (en) * 1992-12-16 1994-07-26 Carrier Corporation Heat exchanger tube
KR0134557B1 (ko) * 1993-07-07 1998-04-28 가메다카 소키치 유하액막식 증발기용 전열관
CA2161296C (fr) * 1994-11-17 1998-06-02 Neelkanth S. Gupte Tube de transfert thermique

Also Published As

Publication number Publication date
JPH10263734A (ja) 1998-10-06
JP2945649B2 (ja) 1999-09-06
CN100347512C (zh) 2007-11-07
EP0865838A1 (fr) 1998-09-23
KR100324065B1 (ko) 2002-08-08
CA2230213C (fr) 2003-05-06
AU722999B2 (en) 2000-08-17
KR19980080288A (ko) 1998-11-25
ES2174408T3 (es) 2002-11-01
CN1193722A (zh) 1998-09-23
CA2230213A1 (fr) 1998-09-17
AU5842698A (en) 1998-09-17

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