EP1674170A1 - Herstellungsverfahen eines Wärmetauschersammlers und Vorrichtung zur Durchführung dieses Verfahrens - Google Patents

Herstellungsverfahen eines Wärmetauschersammlers und Vorrichtung zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP1674170A1
EP1674170A1 EP05292767A EP05292767A EP1674170A1 EP 1674170 A1 EP1674170 A1 EP 1674170A1 EP 05292767 A EP05292767 A EP 05292767A EP 05292767 A EP05292767 A EP 05292767A EP 1674170 A1 EP1674170 A1 EP 1674170A1
Authority
EP
European Patent Office
Prior art keywords
punch
tube
active
actuating member
translation
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
EP05292767A
Other languages
English (en)
French (fr)
Other versions
EP1674170B1 (de
Inventor
Christophe Margueritta
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.)
Ebea Sas
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Ebea Sas
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Publication date
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Publication of EP1674170A1 publication Critical patent/EP1674170A1/de
Application granted granted Critical
Publication of EP1674170B1 publication Critical patent/EP1674170B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section

Definitions

  • the present invention relates to a method of manufacturing a heat exchanger collector, but also to a device for implementing such a method.
  • the invention finds a particularly advantageous, but not exclusive, application in the field of heat exchangers for motor vehicles.
  • a heat exchanger is schematically composed of two parallel tubular manifolds which are interconnected via a plurality of perpendicular hollow fins. To be able to communicate these hollow fins with each collector, and thus allow the circulation of a cooling fluid in the exchanger, it is necessary to arrange through the wall of each collector as many openings as there are hollow fins to be joined.
  • the manufacture of a heat exchanger collector therefore essentially consists of producing a series of openings, generally equidistant, in a metal tube.
  • the making of each opening is generally carried out by drilling without removal of material using a punch, that is to say a sharp element capable of starting and piercing the wall of the tube.
  • a known manufacturing process consists in making the openings one after the other, by incrementally moving the same punch along one or more axes.
  • This type of process presents however, the disadvantage of being relatively long since only one drilling tool is used, and it is therefore necessary to wait for the completion of an opening before being able to undertake a new drilling.
  • the succession of these independent drilling operations is likely to generate a certain lack of precision in the realization of the openings, which can become problematic at the time of assembly proper of the heat exchanger.
  • the technical problem to be solved, by the object of the present invention is to propose a method of manufacturing a heat exchanger collector, comprising a drilling step without removing material from a plurality of openings through the wall of a tube, a method that would avoid the problems of the state of the art being particularly particularly energy-efficient, while ensuring significantly faster implementation and accuracy of implementation.
  • the use of a separate punch for each opening makes it possible to significantly accelerate the manufacturing process of the collector. Moreover, the maintenance of each punch in its opening, during the entire piercing phase, improves the accuracy of realization of other openings.
  • the initial position of the tube is no longer the only reference element, the positions of the already drilled openings also constitute appreciable reference points.
  • the non-simultaneous production of the different openings requires considerably less energy, while remaining of comparable speed.
  • the energy expenditure inherent in the drilling of all the openings is somehow distributed over time so that the power requirement is less.
  • the different holes are however made sufficiently close to the speed of execution is closer to that of the second type of processes of the prior art, the first.
  • the openings were arranged successively, that is to say one after the other. However, it is particularly advantageous that these operations are grouped together over a relatively short period of time, so that the speed of execution the manufacturing process is maximum. Also, and according to a feature of the method according to the invention, the realization of the different openings is performed substantially concomitantly. In practice, this means that several punches can be implemented almost simultaneously, that is to say with a relatively small time lag. The important thing is that the punches are not operated strictly at the same time in order to minimize the energy needs at all times.
  • each opening is carried out gradually.
  • This characteristic means that the drilling of each opening does not necessarily occur continuously but that it can be performed in several distinct times, possibly separated by delays.
  • the decomposition of each piercing into different independent phases advantageously makes it possible to increase the quality of production of the openings in significant proportions. For example, a drilling operation may begin with a roughing phase, followed by a delay phase to dissipate the mechanical stresses generated inside the material during its deformation, and finally ending with a finishing phase.
  • the present invention also relates to the features which will emerge during the following description, which should be considered in isolation or in all their possible technical combinations.
  • the single figure illustrates schematically and in partial section a device for implementing the manufacturing method according to the invention.
  • the single figure shows a device 1 for the manufacture of a heat exchanger collector, and more specifically the drilling without removal of material of a plurality of openings (102a, 102b, 102c, 102d, 102e, 102f, 102g ) through the wall 101 of a tube 100.
  • the device (1) is first provided with holding means (10) which are able to immobilize the tube (100) in a given position.
  • the device (1) is further provided with a plurality of punches (20a, 20b, 20c, 20d, 20e, 20f, 20g) which are movably mounted in translation (arrow f1) in a direction perpendicular to the axis of the tube (100).
  • Each mobility (arrow f1) is exerted between a retracted position in which the active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) of each punch (20a, 20b, 20c, 20d, 20e, 20f , 20g) is spaced from the wall (101) of the tube (100), and an extended position in which said active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) is inserted through said wall ( 101) of the tube (100).
  • the device (1) finally comprises an actuating member (30) which is movably mounted in translation (arrow f2) in a direction perpendicular to the punches (20a, 20b, 20c, 20d, 20e, 20f, 20g).
  • the actuating member (30) further comprises a bearing surface (31) at least partially inclined which is able to cooperate by sliding contact with the passive end (22a, 22b, 22c, 22d, 22e, 22f , 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g).
  • the assembly is arranged in such a way that the translation of the actuating member (30) (arrow f2) causes the translation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) (arrow f1 ) between its retracted position and its deployed position.
  • the bearing surface (31) of the actuating member (30) comprises at least one active part (32, 33), forming a ramp, which is inclined with respect to the perpendicular to the direction in which each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) extends.
  • This characteristic means, on the one hand, that the bearing surface (31) is not necessarily regularly inclined, and that on the other hand, the slope of each active part (32, 33) is not not necessarily continuous. In both cases, there may indeed be breaks in slopes, that is to say abrupt changes in inclination.
  • Each part (32, 33) is here called active because, because of its inclination, it is able to cause the progressive displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during the translation of the actuating member (30), thereby fully playing its role of ramp.
  • each active part (32, 33) is rectilinear. This characteristic makes it possible to generate the displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) with a constant speed, when the speed of translation of the actuating member (30) is also constant.
  • each active part (32, 33) could very well be curvilinear.
  • the speed of implementation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) could then advantageously be modulated according to the degree of insertion of its active end (21a, 21b, 21c, 21d, 21e , 21f, 21g) in the wall (101) of the tube (100).
  • the slopes of the various active parts (32, 33) are substantially identical.
  • This characteristic can advantageously be combined with the fact that the passive end (22a, 22b, 22c, 22d, 22e, 22f, 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) has a bevelled shape of which the inclination substantially corresponds to the slope of each active part (32, 33) of the bearing surface.
  • This formal complementarity makes it possible to maximize the area of contact between the actuating member (30) and each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) when an active part 32, 33 cooperates by sliding contact.
  • the bearing surface (31) of the actuating member 30 comprises at least one passive portion (34), forming a delay zone, which is parallel to the perpendicular to the direction in which extends each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g).
  • This feature also means that the bearing surface (31) is not necessarily regularly inclined, but may have one or more portions extending perpendicularly to the direction of each punch (20a, 20b, 20c). , 20d, 20e, 20f, 20g).
  • Each part (34) is here called passive because, because of its inclination, it does not affect the displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during translation (arrow f2) of the actuating member (30), thereby fully playing its time zone.
  • the bearing surface (31) of the actuating member (30) has two active parts (32, 33) separated by a passive part (34).
  • the first active part (32) corresponds to a roughing phase
  • the passive part (34) to a delay phase
  • the second active part (33) to a finishing phase as regards the production of each opening (102a 102b, 102c, 102d, 102e, 102f, 102g).
  • the device (1 comprises guide means (40) for moving each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g), whereas in this embodiment, the holding means (10 are composed of two jaws (11, 12) whose assembly defines an inner housing (13) of substantially complementary shape to the tube (100.
  • one of the jaws (12) is advantageously provided here a series of through bores (41a, 41b, 41c, 41d, 41e, 41f, 41g), forming guide means (40), which are arranged transversely to the axis of the inner housing (13) and which are respectively able to guide the movement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during their respective translations (arrow f1).
  • the invention can be applied to any type of heat exchanger, in particular those used in motor vehicles but also in industrial installations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP05292767A 2004-12-21 2005-12-21 Herstellungsverfahren eines Wärmetauschersammlers und Vorrichtung zur Durchführung dieses Verfahrens Not-in-force EP1674170B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0413694A FR2879487B1 (fr) 2004-12-21 2004-12-21 Procede de fabrication d'un collecteur d'echangeur thermique et dispositif de mise en oeuvre dudit procede de fabrication

Publications (2)

Publication Number Publication Date
EP1674170A1 true EP1674170A1 (de) 2006-06-28
EP1674170B1 EP1674170B1 (de) 2008-04-23

Family

ID=34954705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05292767A Not-in-force EP1674170B1 (de) 2004-12-21 2005-12-21 Herstellungsverfahren eines Wärmetauschersammlers und Vorrichtung zur Durchführung dieses Verfahrens

Country Status (4)

Country Link
EP (1) EP1674170B1 (de)
AT (1) ATE392963T1 (de)
DE (1) DE602005006223D1 (de)
FR (1) FR2879487B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9308664B2 (en) 2012-07-12 2016-04-12 Modine Manufacturing Company System and method for producing apertures in tubes
US9486863B2 (en) 2011-03-05 2016-11-08 Modine Manufacturing Company Method for producing slots in a tube wall and slotting tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012014073B3 (de) * 2012-07-12 2013-08-08 Modine Manufacturing Co. Verfahren zur Herstellung von Schlitzen und Schlitzwerkzeug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087362A (en) * 1958-12-04 1963-04-30 Babcock & Wilcox Ltd Apparatus for extruding lateral nozzles on cylindrical body
EP0576725A1 (de) * 1992-06-30 1994-01-05 Bernard J. Wallis Wärmetauschersammlerrohr und Verfahren zu dessen Herstellung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087362A (en) * 1958-12-04 1963-04-30 Babcock & Wilcox Ltd Apparatus for extruding lateral nozzles on cylindrical body
EP0576725A1 (de) * 1992-06-30 1994-01-05 Bernard J. Wallis Wärmetauschersammlerrohr und Verfahren zu dessen Herstellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9486863B2 (en) 2011-03-05 2016-11-08 Modine Manufacturing Company Method for producing slots in a tube wall and slotting tool
US9308664B2 (en) 2012-07-12 2016-04-12 Modine Manufacturing Company System and method for producing apertures in tubes

Also Published As

Publication number Publication date
FR2879487B1 (fr) 2008-10-03
FR2879487A1 (fr) 2006-06-23
DE602005006223D1 (de) 2008-06-05
EP1674170B1 (de) 2008-04-23
ATE392963T1 (de) 2008-05-15

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