EP2056976A1 - Method for manufacturing a heat exchanger tube - Google Patents
Method for manufacturing a heat exchanger tubeInfo
- Publication number
- EP2056976A1 EP2056976A1 EP07787841A EP07787841A EP2056976A1 EP 2056976 A1 EP2056976 A1 EP 2056976A1 EP 07787841 A EP07787841 A EP 07787841A EP 07787841 A EP07787841 A EP 07787841A EP 2056976 A1 EP2056976 A1 EP 2056976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- tubes
- heat exchanger
- heat
- welding
- 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.)
- Ceased
Links
Classifications
-
- 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
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
-
- 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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- 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
-
- 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
Definitions
- the present invention relates to a method for producing a heat transfer liquid circulation tube for heat exchangers.
- the invention finds a particularly advantageous application in the field of heat exchange systems in motor vehicles, including engine cooling radiators.
- Heat exchangers are now known for motor vehicles constituted by a bundle of tubes arranged in parallel on one or more rows, these tubes being intended for the circulation through the exchanger of a coolant, such as water. added with glycol in the case of engine cooling radiators.
- a coolant such as water. added with glycol in the case of engine cooling radiators.
- the water cooling the engine components heats up and must in turn be cooled. It is the role of the radiator to perform this function.
- the water to be cooled is circulated in the tubes of the radiator and is cooled by heat exchange with air, the heat exchange being carried out by means of heat exchange elements arranged in the bundle of tubes.
- the tubes used are made of a low oxidation metal material, such as aluminum or an aluminum alloy.
- a low oxidation metal material such as aluminum or an aluminum alloy.
- heat exchange elements there are different types of heat exchange elements.
- the heat exchange elements are parallel fins traversed by the circulation tubes in holes formed in the fins.
- the maintenance of the assembly is achieved mechanically by crimping by means of a tool inserted inside the tubes so as to deform the walls of the tubes and forcefully apply them against the holes made in the fins.
- Another assembly technology is the brazing of the tubes on heat exchange elements consisting of spacers placed between the tubes.
- these spacers are made in the form of corrugated surfaces, the tubes being soldered on the spacers at the vertices of the corrugations.
- the invention applies both to mechanical assembly exchangers and solder-jointed exchangers, but finds more advantages with mechanical exchangers.
- mechanical type exchanger an exchanger in which the heat exchange elements are, in particular, parallel fins traversed by circulation tubes in holes formed in the fins. It is also possible, in a mechanical type exchanger, that the assembly is mechanically held by crimping by means of a tool inserted inside the tubes so as to deform the walls of the tubes and forcefully apply them against the holes in the fins.
- a mechanical type exchanger may also include flares at some at least the ends of the circulation tubes located inside the manifold of the exchanger.
- flares at some at least the ends of the circulation tubes located inside the manifold of the exchanger.
- a process currently used to manufacture aluminum tubes for the production of heat exchangers is extrusion or coextrusion.
- the final dimension of the tube is obtained directly at the outlet of the extrusion press.
- the two processes differ in taking into account the fight against corrosion.
- For an extruded tube is used as a raw material so-called “long life” (or “long life”) which inherently provides protection against corrosion.
- For a coextruded tube two materials are simultaneously attached to the extrusion press, with one of the materials being used as a corrosion-protective layer.
- the electro-welding is made from a rolled metal sheet. To ensure contact between the two edges of the rolled sheet, it is necessary to apply a forging stress which causes the formation of a weld bead.
- This cord can be scraped outside, with the risk however to create scratches on the surface of the tube which can be the cause of a bad seal at the seal in the water boxes.
- the internal weld bead can only be removed when the diameter of the tube is sufficient. For too small diameters, the introduction of the racer tool is impossible, which poses problems for subsequent assembly operations, in particular for the mechanical expansion of the tube. It is then necessary to change the shape of the crimping tool.
- an object of the invention is to propose a method for producing a heat transfer liquid circulation tube for heat exchangers, which would be less expensive than the extrusion or coextrusion process and which would avoid the disadvantages of the electro-welding process iiés the formation of the weld joint.
- said method comprises the following steps: rolling a tube from a strip of foil comprising, at least, a base metal layer,
- the drawing step of the welded tube reduces the tube dimensions in diameter and thickness while simultaneously removing the inner and outer bead formed during the welding step, which greatly facilitates subsequent operations mechanical assembly.
- the invention has other advantages, such as the possibility of obtaining small sized cladding tubes and managing with a single width of different dimensions of tube.
- the stretching step is followed by an annealing step.
- the tube after stretching being particularly hard, the annealing makes it possible to return the tube to the soft state for the following operations of forming and cutting.
- the invention also relates to a tube for heat exchanger obtained by the method and a heat exchanger comprising at least one such tube.
- Figure 1 shows the different steps of a method according to the invention.
- FIG. 1 illustrates a method for producing a heat transfer liquid circulation tube for heat exchangers, such as those used in the automotive industry, for example.
- a preliminary step (a) consists in choosing the raw material that will be used basic to the realization of the tube.
- This raw material may be a strip of multi-ply laminate with, on the one hand, a base aluminum layer serving as a support and can be a "long-lasting" alloy, and, on the other hand, one or more layers of aluminum plating having properties against corrosion, properties for brazing, ... it is also possible to use a single strip and deposit on the strip 10 before rolling and welding an additional layer of protection against corrosion.
- strapping as raw material offers a flexible solution, allowing an unlimited choice of materials and veneers.
- step (b) the strip 10 of the strip is rolled by placing the protective layer inside or outside if necessary and then welded.
- Welding closes the rolled tube 11 by creating an alloy zone consisting of a mixture of the different layers. This welding operation leads to the formation of an internal and external weld bead more or less important depending on the welding process used: laser, plasma, electro-welding, ...
- Step (c) consists, on the one hand, in stretching the tube 11 thus rolled and welded, then, on the other hand, in annealing the stretched tube 12 at the outlet of the die.
- the drawing operation makes it possible: to reduce the dimensions of the tube in diameter and thickness,
- the annealing is intended to bring the tube 12 to a soft state facilitating the subsequent step (d) of forming the tube 12, round or flat, for example, and cutting to length.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Electroplating Methods And Accessories (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0607668A FR2905289B1 (en) | 2006-08-31 | 2006-08-31 | TUBE REALIZATION METHOD FOR HEAT EXCHANGER, TUBE OBTAINED BY SUCH A METHOD AND HEAT EXCHANGER HAVING SUCH A TUBE. |
PCT/EP2007/057598 WO2008025615A1 (en) | 2006-08-31 | 2007-07-24 | Method for manufacturing a heat exchanger tube |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2056976A1 true EP2056976A1 (en) | 2009-05-13 |
Family
ID=37781785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07787841A Ceased EP2056976A1 (en) | 2006-08-31 | 2007-07-24 | Method for manufacturing a heat exchanger tube |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2056976A1 (en) |
CN (1) | CN101511501B (en) |
BR (1) | BRPI0715650A2 (en) |
FR (1) | FR2905289B1 (en) |
RU (1) | RU2448797C2 (en) |
WO (1) | WO2008025615A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2982663B1 (en) * | 2011-11-10 | 2015-01-23 | Valeo Systemes Thermiques | METHOD OF MANUFACTURING A HEAT EXCHANGER AND HEAT EXCHANGER OBTAINED BY SAID METHOD, OLIVE AND DEVICE FOR EXPANSION OF TUBES FOR IMPLEMENTING SAID METHOD |
CN104139283B (en) * | 2014-08-01 | 2016-05-25 | 中国水利水电第十工程局有限公司 | The preparation method of pressure backfill type pipeline |
ES2733747B2 (en) * | 2018-05-31 | 2021-10-07 | Valeo Termico Sa | HEAT EXCHANGER FOR GASES, ESPECIALLY FOR EXHAUST GASES FROM AN ENGINE |
CN109945724A (en) * | 2019-02-26 | 2019-06-28 | 徐志良 | A kind of heat exchanger tube and preparation method thereof |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU388865A1 (en) * | 1971-07-02 | 1973-07-05 | METHOD OF MAKING BIMETALLIC PIPES | |
SU827957A1 (en) * | 1979-06-18 | 1981-05-07 | Ордена Ленина И Ордена Трудовогокрасного Знамени Институт Электросварки Им.E.O.Патона Ah Украинской Ccp | Heating pipe and method of manufacturing same |
DE3807002C1 (en) * | 1988-03-01 | 1989-04-27 | Mannesmann Ag, 4000 Duesseldorf, De | |
JPH02108411A (en) * | 1988-10-17 | 1990-04-20 | Sumitomo Light Metal Ind Ltd | Method and apparatus for manufacturing |
RU2068324C1 (en) * | 1991-11-18 | 1996-10-27 | Акционерное общество открытого типа "Северсталь" | Bimetal strip, for instance for welded pipes, and bimetal strip manufacture method |
WO1994021837A1 (en) * | 1993-03-24 | 1994-09-29 | Tubemakers Of Australia Limited | Tube formed from steel strip having metal layer on one side |
RU2070451C1 (en) * | 1994-09-28 | 1996-12-20 | Акционерное общество открытого типа "Уральский научно-исследовательский институт трубной промышленности" | Method of manufacture of welded cold-worked pipes |
JPH09295089A (en) * | 1996-05-09 | 1997-11-18 | Furukawa Electric Co Ltd:The | Thin and flat tube for heat exchanger |
JP2001241877A (en) * | 2000-02-25 | 2001-09-07 | Furukawa Electric Co Ltd:The | Inner helically grooved tube and method of manufacture |
RU2185910C1 (en) * | 2000-12-06 | 2002-07-27 | Уфимский государственный авиационный технический университет | Mill for making straight-seam welded measure-length tubes |
RU2176583C1 (en) * | 2001-04-19 | 2001-12-10 | Андрианов Николай Филиппович | Method for making heat exchanger with tubular member |
-
2006
- 2006-08-31 FR FR0607668A patent/FR2905289B1/en not_active Expired - Fee Related
-
2007
- 2007-07-24 CN CN2007800325016A patent/CN101511501B/en not_active Expired - Fee Related
- 2007-07-24 RU RU2009111592/02A patent/RU2448797C2/en active
- 2007-07-24 WO PCT/EP2007/057598 patent/WO2008025615A1/en active Application Filing
- 2007-07-24 EP EP07787841A patent/EP2056976A1/en not_active Ceased
- 2007-07-24 BR BRPI0715650-2A patent/BRPI0715650A2/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2008025615A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2448797C2 (en) | 2012-04-27 |
FR2905289B1 (en) | 2009-04-17 |
CN101511501A (en) | 2009-08-19 |
BRPI0715650A2 (en) | 2013-07-02 |
RU2009111592A (en) | 2010-10-10 |
FR2905289A1 (en) | 2008-03-07 |
WO2008025615A1 (en) | 2008-03-06 |
CN101511501B (en) | 2012-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2902510A1 (en) | SIDE PLATE FOR HEAT EXCHANGER, METHOD FOR MANUFACTURING HEAT EXCHANGER, AND HEAT EXCHANGER | |
EP2056976A1 (en) | Method for manufacturing a heat exchanger tube | |
FR2676535A1 (en) | HEAT EXCHANGER HAVING A TUBULAR FLUID CELL WITH CROSS - SECTIONAL PARTITIONS AND METHOD FOR PRODUCING THE SAME. | |
FR2878946A1 (en) | PROFILE LAMINATED METAL TUBE AND METHOD OF MANUFACTURING THE SAME | |
EP2554080A1 (en) | A method of manufacturing a cooking vessel with controlled deformation and cooking vessel obtained | |
EP0156711B1 (en) | Welded double-walled tube and method for its manufacture | |
FR2728667A1 (en) | HEAT EXCHANGER, HEAT EXCHANGER TUBE AND METHODS FOR THEIR MANUFACTURE | |
WO2014170178A1 (en) | Heat exchanger with a dual-function dispensing head connection assembly | |
WO2003046456A1 (en) | Tube profiles for heat exchanger | |
EP1579162A1 (en) | Method of producing a heat exchanger module | |
EP0998655A1 (en) | Heat exchanger, in particular motor vehicle condenser and method for making same | |
FR2904400A1 (en) | TRANSITION ASSEMBLY BETWEEN HEAT EXCHANGER AND EXTERNAL FLOW CIRCUIT, HEAT EXCHANGER, AND METHOD FOR MANUFACTURING THE TRANSITION ASSEMBLY | |
FR2884308A1 (en) | SIDE PLATE FOR USE WITH A HEAT EXCHANGER AND METHOD OF MAKING THE EXCHANGER | |
FR2906355A1 (en) | Tube for a heat exchanger of an automobile vehicle, comprises an oval form cross-sectional boundary with small and large axes, successive undulations defined by a longitudinal periodic variation, and a wall with constant thickness | |
BE1006617A3 (en) | Fin tubes and method of making. | |
EP1949012B1 (en) | Grooved tubes for heat exchangers with better resistance to expansion | |
EP1473503B1 (en) | Corrugated flexible pipe with a reinforcing metal ring and method for manufacturing said pipe. | |
FR2913489A1 (en) | Device for compressing heat exchange bundle during assembly, e.g. in production of automobile heat exchangers, comprises side support flattened under strain and fixed in retaining bushes | |
EP3325911A1 (en) | Heat exchanger with improved fins | |
EP1991817A1 (en) | Method for producing aluminum panels comprising an integrated circuit for heat exchangers | |
FR2852543A1 (en) | Connection support fixing process for heat exchanger e.g. air-conditioning condenser, involves deforming wall to penetrate hole for connection by mechanical clinching operation and brazing support with lid | |
EP0581684A1 (en) | Heat-exchanger having brazed tubes and method of assembling the heat-exchanger | |
FR2854452A1 (en) | Heat exchanger manufacturing process for use in motor vehicle, involves assembling components of heat exchange module, and simultaneously brazing folded fluid circulation tubes with heat exchange module | |
FR2860063A1 (en) | Collecting box assembling method for motor vehicle, involves making pattern cavity by punching on external side of assembly at level of internal side to fasten respective lateral edges of collector box and collector | |
EP1701126A1 (en) | Assembling process for a collector tank onto a collector plate and assembly obtained thereby |
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 |
|
17P | Request for examination filed |
Effective date: 20090206 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
17Q | First examination report despatched |
Effective date: 20090609 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20111217 |