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EP0687880A1 - Tube avec plusieurs nervures hécicoidales et son procédé de fabrication - Google Patents

Tube avec plusieurs nervures hécicoidales et son procédé de fabrication Download PDF

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Publication number
EP0687880A1
EP0687880A1 EP95108495A EP95108495A EP0687880A1 EP 0687880 A1 EP0687880 A1 EP 0687880A1 EP 95108495 A EP95108495 A EP 95108495A EP 95108495 A EP95108495 A EP 95108495A EP 0687880 A1 EP0687880 A1 EP 0687880A1
Authority
EP
European Patent Office
Prior art keywords
finned tube
rib
tube according
rolling
finned
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.)
Granted
Application number
EP95108495A
Other languages
German (de)
English (en)
Other versions
EP0687880B1 (fr
Inventor
Gerhard Dr.-Ing. Schüz
Manfred Dipl.-Ing. Knab
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.)
Wieland Werke AG
Original Assignee
Wieland Werke AG
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 Wieland Werke AG filed Critical Wieland Werke AG
Publication of EP0687880A1 publication Critical patent/EP0687880A1/fr
Application granted granted Critical
Publication of EP0687880B1 publication Critical patent/EP0687880B1/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
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/51—Heat exchange having heat exchange surface treatment, adjunct or enhancement
    • Y10S165/518—Conduit with discrete fin structure
    • Y10S165/524—Longitudinally extending
    • Y10S165/525—Helical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • Y10T29/49382—Helically finned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53113—Heat exchanger
    • Y10T29/53122—Heat exchanger including deforming means

Definitions

  • the invention relates to a metallic finned tube, in particular for heat exchangers or the like; with helical circumferential, multi-start integral ribs on the outside (see, for example, DE-AS 2.110.485).
  • Finned tubes with single or multi-start fins running helically on the outside are rolled out of the tube wall by means of rolling tools which have roller disks arranged on tool shafts (cf. US Pat. Nos. 1,865,575 / 3,327,512 and Fig. 1).
  • the transferable thermal performance of finned tubes depends, among other things, on the enlargement of the surface achieved by the fins. For this reason, the fin division of finned tubes has decreased continuously in recent years. As a result, the surface enlargement achieved by the ribbing could be increased further and further. With a rib pitch of 0.63 mm (corresponding to 1574 ribs per m), the surface is quadrupled compared to the smooth tube. In applications with phase change, ie in evaporators and condensers, surface forces and capillary-porous effects result in additional intensification of the heat transfer, in particular in the case of Pipes with small fin pitches reached.
  • the invention has for its object to improve the heat transfer performance of the known finned tubes, an economical production of the finned tubes must be ensured.
  • the object is achieved in that at a rate n ⁇ 4 at least one group is formed which has at least two adjacent starts (A1, A2 or A3, A4 ...) of rib courses.
  • groups of two, three or four beginnings of finned passages are formed.
  • the invention is particularly suitable for high-performance finned tubes in which the fin tips are compressed on the outside either to form thickened ends, are notched and possibly split after the notching to form cavities and / or are laterally bent and / or compressed.
  • the inside has corrugations, which can also be interrupted and whose spacing - viewed in the longitudinal direction of the tube - preferably corresponds to the product of the fin pitch t R and pitch n.
  • protrusions are recommended on the inside, which are formed by two intersecting systems of oppositely helical inner trains.
  • the invention further relates to a method for producing the finned tube according to the invention.
  • the fins were originally rolled on the outside of a finned tube.
  • w roll is the rolling speed
  • ⁇ is the inclination angle
  • D sch is the diameter of the largest rolling disk
  • ⁇ is the speed of the tool shafts.
  • D sch are geometrical limits; because the maximum diameter results from the condition that the roller disks of adjacent tool shafts must not touch during operation.
  • n is the movement rate
  • R t is the pitch of the ribs and D core
  • the core diameter of the finned tube is. Accordingly, for a given rib geometry (pitch and core diameter), the inclination can only be increased by increasing the pitch.
  • the method according to the invention is characterized in that the desired movement n of the existing number N of rolling tools is adapted in such a way that one or more of the rolling tools each more generate as a ribbed duct; d. H. it is always n> N.
  • the method according to the invention is based on the fact that at least one rolling tool is used to produce more than one rib gear.
  • the ability to roll finned tubes is thus increased considerably beyond what was previously possible.
  • the present invention enables the output of rolling devices to be multiplied.
  • the maximum limit of the movement is the achievable inclination angles of the devices, apart from the self-locking.
  • each rolling tool produces two, three or four rib courses.
  • a method according to claim 20 is recommended for producing a finned tube with compressed fin tips, a method according to claim 21 for producing a finned tube with notched finned tips and one according to claim 22 for producing a finned tube with split and / or bent and / or compressed finned tips.
  • a profiled rolling mandrel is recommended for producing a finned tube according to the invention with inner fins.
  • a method according to claim 24 is proposed for finned tube with inner corrugations (cf. also EPS 0.102.407).
  • a corrugated washer is not used in all rolling tools.
  • FIG. 1 schematically shows an integral finned tube 1 according to the invention, on the outside of which fins 2 run helically, between which a groove 3 is formed.
  • the ribs 2 have a height h R ; the rib division (distance from center of rib to center of rib) is denoted by t R.
  • the finned tube 1 according to the invention is produced by a rolling process (cf. US Pat. Nos. 1,865,575 / 3,327,512) using the device shown in FIGS. 1 and 2b.
  • the tool holder 4 can be adjusted radially. They are in turn arranged in a stationary roller head (not shown) (according to another variant, the tube is only advanced axially when the roller head is rotating).
  • the smooth pipe 1 'entering the device in the direction of the arrow is set in rotation by the driven rolling tools 5 arranged on the circumference, the shafts 6 of the rolling tools 5 running obliquely to the pipe axis.
  • the rolling tools 5 consist, in a manner known per se, of a plurality of rolling disks 7 arranged side by side on the shafts 6, the diameter of which increases in the direction of the arrow.
  • the centrally arranged rolling tools 5 form the helically surrounding ribs 2 from the tube wall of the smooth tube 1 ', the smooth tube 1' being supported here by a profiled rolling mandrel 8.
  • the ribs which are denoted by the number 9, are formed on the inside of the tube 1 in the form of a spiral.
  • FIG. 3 shows schematically the difference between the inventive and conventional rolling method using the example of six-speed rolling.
  • Fig. 3a three groups of two adjacent beginnings A1, A2 or A3, A4 or A5, A6 (the latter not shown) of fins are distributed evenly over the circumference of the tube, while according to Fig. 3b six individual beginnings A1, A2, A3, A4, A5, A6 (A4 - A6 not shown) are arranged on the pipe circumference. (For the rest, the previous reference numbers, some of which are provided with indices, are used in FIGS. 3a, 3b.)
  • finned tubes 1 with a fin pitch t R ⁇ 0.53 mm were produced on a device with four rolling tools 5 in eight threads.
  • the fin height h R 0.95 mm.
  • Another implementation is based on the eight-thread rolling of a finned tube 1 with a pitch t R ⁇ 0.64 mm with a similar internal structure as described above.
  • FIG. 4 shows, in addition to FIG. 1, a rolling device in which a swaging disk 10 is additionally integrated in the tool holder 4 for upsetting into T-shaped rib tips 2 '.
  • FIG. 5 shows a partial section perpendicular to the tube axis, in which the sizes rib diameter D, inner diameter D i , rib height h i , average flank spacing W and the apex angle ⁇ of the inner ribs 9 are entered.

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)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP95108495A 1994-06-15 1995-06-02 Tube avec plusieurs nervures hécicoidales et son procédé de fabrication Expired - Lifetime EP0687880B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4420756A DE4420756C1 (de) 1994-06-15 1994-06-15 Mehrgängiges Rippenrohr und Verfahren zu dessen Herstellung
DE4420756 1994-06-15

Publications (2)

Publication Number Publication Date
EP0687880A1 true EP0687880A1 (fr) 1995-12-20
EP0687880B1 EP0687880B1 (fr) 1998-08-26

Family

ID=32932655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108495A Expired - Lifetime EP0687880B1 (fr) 1994-06-15 1995-06-02 Tube avec plusieurs nervures hécicoidales et son procédé de fabrication

Country Status (9)

Country Link
US (2) US5803164A (fr)
EP (1) EP0687880B1 (fr)
JP (1) JP3945785B2 (fr)
KR (1) KR100365667B1 (fr)
CN (1) CN1092787C (fr)
CA (1) CA2150588C (fr)
DE (2) DE4420756C1 (fr)
MY (1) MY114272A (fr)
ZA (1) ZA954310B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112025138A (zh) * 2020-08-10 2020-12-04 燕山大学 一种管线钢管焊缝开口角的在线调节方法及装置

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JP4822238B2 (ja) * 2001-07-24 2011-11-24 株式会社日本製鋼所 液媒用内面溝付伝熱管とその伝熱管を用いた熱交換器
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US8573022B2 (en) * 2002-06-10 2013-11-05 Wieland-Werke Ag Method for making enhanced heat transfer surfaces
US7311137B2 (en) * 2002-06-10 2007-12-25 Wolverine Tube, Inc. Heat transfer tube including enhanced heat transfer surfaces
BRPI0305057B1 (pt) * 2002-06-10 2015-07-14 Wolverine Tube Inc Tubo de transferência de calor, ferramenta para cortar a superfície interna de um tubo e método para a produção de um tubo
US6904779B1 (en) * 2003-05-09 2005-06-14 Thomas E. Hickok Method of manufacturing a heat exchanger tube with parallel fins
US20060112535A1 (en) 2004-05-13 2006-06-01 Petur Thors Retractable finning tool and method of using
MX2007011736A (es) * 2005-03-25 2008-01-29 Wolverine Tube Inc Herramienta para producir superficies de transferencia.
US7293602B2 (en) * 2005-06-22 2007-11-13 Holtec International Inc. Fin tube assembly for heat exchanger and method
CN100421831C (zh) * 2005-08-23 2008-10-01 余金盘 一种整体环形翅片管的加工设备及工艺方法
CN101338987B (zh) * 2007-07-06 2011-05-04 高克联管件(上海)有限公司 一种冷凝用传热管
US8118085B2 (en) 2008-02-06 2012-02-21 Leprino Foods Company Heat exchanger
CN103447365A (zh) * 2012-05-29 2013-12-18 候彩花 一种半自动整体型螺旋翅片管热轧设备
CN103192266B (zh) * 2013-04-03 2016-01-13 哈尔滨理工大学 带筋整体壁板挤轧复合成形装置及方法
CN104117834A (zh) * 2014-07-11 2014-10-29 航天海鹰(哈尔滨)钛业有限公司 钛或钛合金翅片管的制造方法
CN105234229A (zh) * 2015-11-06 2016-01-13 福建省晋江市佶龙机械工业有限公司 一种椭圆形轧片式散热管及其制造设备
CN105234230A (zh) * 2015-11-06 2016-01-13 福建省晋江市佶龙机械工业有限公司 一种椭圆形轧片式散热管及其制造设备
CN105234624B (zh) * 2015-11-06 2017-07-11 福建佶龙机械科技股份有限公司 一种椭圆轧片式散热管及其加工装置
CN107774849B (zh) * 2017-10-27 2024-06-18 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
CN111229834A (zh) * 2020-02-25 2020-06-05 沈阳时代传感器科技有限公司 一种自收缩带筋紧固管套及其制备方法
KR102505047B1 (ko) * 2021-10-22 2023-03-02 (주)누리티앤씨 철근 파이프 조관장치 및 이를 이용한 철근 파이프 제조방법

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US3327512A (en) 1964-12-28 1967-06-27 Calumet & Hecla Fine pitch finned tubing and method of producing the same
US3383893A (en) 1965-08-16 1968-05-21 Calumet & Hecla Apparatus for producing integral finned tubing of fine pitch
US3481394A (en) 1967-06-26 1969-12-02 Calumet & Hecla Corp Configuration of heat transfer tubing for vapor condensation on its outer surface
DE2110485A1 (de) 1970-03-04 1971-09-16 Trane Co Vorrichtung zur Schaffung eines Rohres mit schraubenfoermigen Rippen auf der Aussenseite
EP0102407A1 (fr) 1982-09-03 1984-03-14 Wieland-Werke Ag Tube à ailettes avec protubérances internes et procédé et dispositif de fabrication

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JPS60144595A (ja) * 1984-01-06 1985-07-30 Mitsubishi Heavy Ind Ltd 熱交換器の伝熱管構造
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Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865575A (en) 1928-11-30 1932-07-05 Wolverine Tube Company Apparatus for manufacturing integral finned tubing
US2070539A (en) * 1935-12-19 1937-02-09 Schutte & Koerting Company Fin tube
GB601753A (en) * 1945-01-17 1948-05-12 Calumet And Hecla Cons Copper Multiple helical finned tubing and method of manufacturing the same
US3327512A (en) 1964-12-28 1967-06-27 Calumet & Hecla Fine pitch finned tubing and method of producing the same
US3383893A (en) 1965-08-16 1968-05-21 Calumet & Hecla Apparatus for producing integral finned tubing of fine pitch
US3481394A (en) 1967-06-26 1969-12-02 Calumet & Hecla Corp Configuration of heat transfer tubing for vapor condensation on its outer surface
DE2110485A1 (de) 1970-03-04 1971-09-16 Trane Co Vorrichtung zur Schaffung eines Rohres mit schraubenfoermigen Rippen auf der Aussenseite
EP0102407A1 (fr) 1982-09-03 1984-03-14 Wieland-Werke Ag Tube à ailettes avec protubérances internes et procédé et dispositif de fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112025138A (zh) * 2020-08-10 2020-12-04 燕山大学 一种管线钢管焊缝开口角的在线调节方法及装置
CN112025138B (zh) * 2020-08-10 2021-04-16 燕山大学 一种管线钢管焊缝开口角的在线调节方法及装置

Also Published As

Publication number Publication date
CA2150588A1 (fr) 1995-12-16
US5761807A (en) 1998-06-09
JP3945785B2 (ja) 2007-07-18
US5803164A (en) 1998-09-08
JPH0857535A (ja) 1996-03-05
CN1121581A (zh) 1996-05-01
KR960001709A (ko) 1996-01-25
DE4420756C1 (de) 1995-11-30
KR100365667B1 (ko) 2003-03-04
MY114272A (en) 2002-09-30
DE59503311D1 (de) 1998-10-01
EP0687880B1 (fr) 1998-08-26
CN1092787C (zh) 2002-10-16
ZA954310B (en) 1996-03-05
CA2150588C (fr) 2006-12-19

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