WO2012019910A1 - Procédé de fabrication d'un tube de transmission de chaleur pour un échangeur de chaleur, notamment d'un véhicule automobile - Google Patents

Procédé de fabrication d'un tube de transmission de chaleur pour un échangeur de chaleur, notamment d'un véhicule automobile Download PDF

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Publication number
WO2012019910A1
WO2012019910A1 PCT/EP2011/062894 EP2011062894W WO2012019910A1 WO 2012019910 A1 WO2012019910 A1 WO 2012019910A1 EP 2011062894 W EP2011062894 W EP 2011062894W WO 2012019910 A1 WO2012019910 A1 WO 2012019910A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat transfer
transfer tube
insert
heat
welded
Prior art date
Application number
PCT/EP2011/062894
Other languages
German (de)
English (en)
Inventor
Steffen Brunner
Original Assignee
Behr Gmbh & Co. Kg
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 Behr Gmbh & Co. Kg filed Critical Behr Gmbh & Co. Kg
Publication of WO2012019910A1 publication Critical patent/WO2012019910A1/fr

Links

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
    • F28F1/10—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
    • 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
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/225—Making finned or ribbed tubes by fixing strip or like material to tubes longitudinally-ribbed tubes
    • 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
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding

Definitions

  • the invention relates to a method for producing a heat transfer tube for a heat exchanger, in particular a motor vehicle, in which an insert contacts an inner side of the heat transfer tube and is secured thereto.
  • Heat exchangers with heat transfer tubes are known in many embodiments and applications and are used in particular for the engine cooling and the air conditioning of motor vehicles.
  • Such heat exchangers have a brazed block of flat tubes and corrugated ribs, with a medium to be cooled, such as, for example, exhaust gas of an internal combustion engine, flowing through in the flat tubes.
  • the flat tube serving as a heat transfer tube is cooled from the outside by a cooling medium.
  • winglets In the interior of the heat transfer tube deposits are included, which have deep-drawn imprints, so-called winglets, by means of which The laminar flow of the medium to be cooled is converted into a turbulent flow within the heat transfer tube. This has the consequence that the medium to be cooled flowing through the heat exchanger releases its heat to the heat transfer tube. The cooling medium, which flows past the heat transfer tube from the outside, absorbs the heat released to the heat transfer tube and discharges it from the heat exchanger.
  • winglets have the disadvantage that they have only a small heat transfer surface.
  • a flat heat transfer tube for a heat exchanger in which an insert consists of a sheet metal strip from which a plurality of structural elements are cut out and rotated out of the plane of the sheet metal strip.
  • the structural elements thus protrude on both sides of the sheet metal strip and are soldered to the inside of the heat transfer tube.
  • the soldering of the insert with the flat tube leads to contamination, in particular by Lötanhaftept at the ends of the heat transfer tube, whereby further processing of the heat transfer tube is difficult, so that the heat transfer tube can not be welded to the bottom of the heat exchanger.
  • the invention is therefore based on the object of specifying a method for producing a heat transfer tube for a heat exchanger, in which reliable further processing of the heat transfer tube provided with an insert to a heat exchanger is ensured.
  • the object is achieved in that the insert is welded to the inside of the heat transfer tube.
  • the welding ensures that no impurities adhere to the heat transfer tube or its tube ends, which hampering work of the heat transfer tube. Welding also results in a higher strength of the heat transfer tube.
  • the solution according to the invention also has the advantage that the heat transfer tube can be welded to the bottom of the heat exchanger.
  • the insert consists of a metal strip, which has structural elements which protrude from the metal strips, wherein at least one, the inside of the heat transfer tube contacted structural element is welded to the heat transfer tube.
  • Such an insert is also referred to as an inner rib and has a large surface area, whereby a very good distribution of the heat transferred by the medium to be cooled within the insert is ensured.
  • the surface designed in this way is also called the secondary surface.
  • a secondary surface is understood to mean the part of the insert which has no contact with the outer surface of the heat transfer tube, which is surrounded by a coolant. As a result, the performance of the heat transfer tubes is ensured even in the soiled state.
  • the insert is inserted into the prefabricated heat transfer tube and then welded to the heat transfer tube.
  • This method is a particularly simple assembly method because the one-piece heat transfer tube has already been prefabricated in another process. Thus, only a welding of the insert with the heat transfer tube is necessary.
  • the insert is positioned on a metal strip and then welded to the metal strip, wherein the metal strip is formed into the tube, wherein after welding of the insert, the ends of the metal band are closed to the heat transfer tube.
  • the insert In order to transfer heat from the insert to the coolant circulating around the heat transfer tube, the insert is connected to the heat transfer tube via at least one weld seam.
  • a particularly good strength and simultaneous heat transfer is achieved in that the heat transfer tube has an approximately rectangular cross-section, wherein the insert is welded to the heat transfer tube on two opposite sides of the heat transfer tube.
  • the heat transfer tube welded to the insert is welded to a bottom of the heat exchanger.
  • Figure 1 Top view of a heat transfer tube with an inner fin
  • FIG. 2 top view of the underside of the heat transfer tube according to FIG. 1
  • FIG. 1 shows a heat transfer tube 1, as used in a heat exchanger.
  • the heat transfer tube 1 has a flat, rectangular cross-section and is integrally formed.
  • a liner 2 is inserted, which is formed as an inner rib. Inserts are referred to as inner rib, which consist of a sheet metal strip from which a plurality of structural elements 3 are cut and turned out of the plane of the sheet metal strip. The structural elements 3 thus protrude from the metal strip on both sides.
  • Such a liner 2 is inserted into the interior of the heat transfer tube 1, the structural elements 3 touching the inside of the heat transfer tube 1. After inserting the insert 2 into the heat transfer tube 1, the insert 2 is welded to the heat transfer tube 1.
  • FIG. 1 Due to the large number of structural elements 3, which evenly distribute the heat in the heat transfer tube 1, a large heat transfer area, the so-called secondary area, is formed.
  • the insert 2 absorbs heat released from the medium to be cooled, which is transported through the heat transfer tube 1. By touching the structural elements 3 of the insert 2 with the heat transfer tube 1, the heat absorbed by the structural elements 3 is released to the heat transfer tube 1.
  • the heat transfer tube 1 is surrounded by a cooling medium, whereby the heat is removed from the cooling medium.
  • Figure 2 shows the heat transfer tube 1 just described from the bottom, wherein the insert 2 is inserted into the interior of the heat transfer tube 1.
  • the underside of the heat transfer tube 1 has a weld 6, which the heat transfer tube 1 welded to the middle row 7 of structural elements 3.
  • the number of welds 4, 5, 6 is only an example and may vary from heat transfer tube to heat transfer tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un tube de transmission de chaleur pour un échangeur de chaleur, notamment d'un véhicule automobile, selon lequel un insert (2) est en contact avec une face intérieure du tube de transmission de chaleur (1) à laquelle il est fixé. Pour garantir une transformation sans difficulté du tube de transmission de chaleur en un échangeur de chaleur, l'insert (2) est soudé avec la face intérieure du tube de transmission de chaleur (1).
PCT/EP2011/062894 2010-08-09 2011-07-27 Procédé de fabrication d'un tube de transmission de chaleur pour un échangeur de chaleur, notamment d'un véhicule automobile WO2012019910A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010039062 DE102010039062A1 (de) 2010-08-09 2010-08-09 Verfahren zur Herstellung eines Wärmeübertragungsrohres für einen Wärmetauscher, insbesondere eines Kraftfahrzeuges
DE102010039062.3 2010-08-09

Publications (1)

Publication Number Publication Date
WO2012019910A1 true WO2012019910A1 (fr) 2012-02-16

Family

ID=44629361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/062894 WO2012019910A1 (fr) 2010-08-09 2011-07-27 Procédé de fabrication d'un tube de transmission de chaleur pour un échangeur de chaleur, notamment d'un véhicule automobile

Country Status (2)

Country Link
DE (1) DE102010039062A1 (fr)
WO (1) WO2012019910A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1127478A (en) * 1965-12-21 1968-09-18 Sevelen Metallbau A method of providing ribs on heat-exchanger surfaces with corrugated strips
US3961741A (en) * 1972-09-13 1976-06-08 Foster Wheeler Energy Corporation Heat transfer tubes with internal extended surface
CH583894A5 (en) * 1974-06-19 1977-01-14 Liberecke Automobilove Z Narod Coiled heat-conducting heat exchanger insertion unit - with through-holes for heat-exchange medium along helical line and longitudinal axis
JPS5929991A (ja) * 1982-08-09 1984-02-17 株式会社　大阪ボイラ−製作所 熱交換チユ−ブ
DE4343825A1 (de) * 1993-12-22 1995-06-29 Behr Gmbh & Co Rohr-Bodenverbindung für einen Wärmetauscher
DE102004057407A1 (de) 2004-01-13 2005-08-11 Behr Gmbh & Co. Kg Flachrohr für Wärmeübertrager, insbesondere Kondensatoren
DE202009016426U1 (de) * 2009-11-17 2010-05-12 Arup Alu-Rohr Und Profil Gmbh Flachrohr mit Turbulenzeinlage für einen Wärmetauscher und Wärmetauscher mit derartigen Flachrohren

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1127478A (en) * 1965-12-21 1968-09-18 Sevelen Metallbau A method of providing ribs on heat-exchanger surfaces with corrugated strips
US3961741A (en) * 1972-09-13 1976-06-08 Foster Wheeler Energy Corporation Heat transfer tubes with internal extended surface
CH583894A5 (en) * 1974-06-19 1977-01-14 Liberecke Automobilove Z Narod Coiled heat-conducting heat exchanger insertion unit - with through-holes for heat-exchange medium along helical line and longitudinal axis
JPS5929991A (ja) * 1982-08-09 1984-02-17 株式会社　大阪ボイラ−製作所 熱交換チユ−ブ
DE4343825A1 (de) * 1993-12-22 1995-06-29 Behr Gmbh & Co Rohr-Bodenverbindung für einen Wärmetauscher
DE102004057407A1 (de) 2004-01-13 2005-08-11 Behr Gmbh & Co. Kg Flachrohr für Wärmeübertrager, insbesondere Kondensatoren
DE202009016426U1 (de) * 2009-11-17 2010-05-12 Arup Alu-Rohr Und Profil Gmbh Flachrohr mit Turbulenzeinlage für einen Wärmetauscher und Wärmetauscher mit derartigen Flachrohren

Also Published As

Publication number Publication date
DE102010039062A1 (de) 2012-02-09

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