EP2402702A1 - Abdeckung eines Wärmetauschers, und eine solche Abdeckung umfassender Wärmetauscher - Google Patents

Abdeckung eines Wärmetauschers, und eine solche Abdeckung umfassender Wärmetauscher Download PDF

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Publication number
EP2402702A1
EP2402702A1 EP11170355A EP11170355A EP2402702A1 EP 2402702 A1 EP2402702 A1 EP 2402702A1 EP 11170355 A EP11170355 A EP 11170355A EP 11170355 A EP11170355 A EP 11170355A EP 2402702 A1 EP2402702 A1 EP 2402702A1
Authority
EP
European Patent Office
Prior art keywords
cover
lid
tubing
pipe
heat exchanger
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.)
Withdrawn
Application number
EP11170355A
Other languages
English (en)
French (fr)
Inventor
Nicolas Vallee
François Beideler
Yoann Naudin
Olivier Schild
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2402702A1 publication Critical patent/EP2402702A1/de
Withdrawn legal-status Critical Current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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines

Definitions

  • the field of the invention is that of heat exchangers for a motor vehicle.
  • the invention relates more particularly to the attachment of a pipe to a heat exchanger cover. It may in particular be a charge air cooler, including a charge air cooler in which the supercharging air exchange heat with a coolant.
  • a heat exchanger comprising a heat exchange bundle, mounted in an exchanger housing, which consists of a multiplicity of stacked exchange elements.
  • the spaces between the beam exchange elements form, on the one hand, channels for driving a flow of gas to be cooled, for example intake gases and, on the other hand, driving ducts.
  • a heat transfer fluid for exchanging calories with the gas flow to be cooled.
  • Disturbance fins are traditionally arranged in the gas ducts in order to promote the exchange of heat (or calories) between the gas flow and the heat transfer fluid.
  • the heat exchanger casing conventionally comprises a rectangular wall, designated a cover, in which are formed two communication passages, for example, circular, to respectively allow the introduction and the evacuation of the heat transfer fluid of the exchanger.
  • each communication passage comprises a cylindrical tube mounted by brazing in each of the communication passages of the cover.
  • two pipes 2 are brazed to an exchanger cover 1 and each comprise a rectilinear base portion 21 extending orthogonally to the plane defined by the cover 1, a rectilinear end portion 23 extending parallel to the defined plane by the cover 1, and an intermediate bent portion 22 connecting the base portion 21 to the end portion 23.
  • the lid 1 comprises a circular orifice 11 and a collar 12 peripheral to said orifice 11 extending orthogonally to the plane of the lid 1 as shown in FIG. figure 2 , the collar 12 is generally formed by stamping.
  • the collar 12 has an inside diameter substantially greater than the outside diameter of the tubing 2 so as to allow the introduction of the base portion 21 into the collar 12.
  • the base portion 21 of the tubing 2 further comprises a shoulder 24 allowing to limit the insertion length of the tubing 2 in the cover 1, the end of the collar 12 being in abutment with the shoulder 24 after introduction.
  • the surfaces of the tubing 2 and the collar 12 which are in contact are brazed together by brazing in the oven. With reference to the figure 1 tubing 2 is brazed to a cylindrical surface of height "e" as shown in FIG. figure 2 .
  • the tubing 2 To limit the size of the exchanger under the hood of a vehicle, it seeks to tilt the tubing relative to the plane of the lid.
  • the tubing 2 must comprise a base portion 21 orthogonal to the plane of the cover to allow attachment with the collar 12.
  • a such limitation significantly increases the size of the tubing 2 in the direction orthogonal to the plane of the cover 1 because the minimum value of the radius of the bent portion of the tubing is related to the diameter of the tubing.
  • a lid 1 with a tubing 2 according to the prior art is not entirely satisfactory.
  • the invention relates to a cover of a heat exchanger for a motor vehicle comprising at least one circulation passage of a heat transfer fluid and a pipe mounted in said passage to allow the circulation of coolant in said heat exchanger, cover in which the passage is constituted by a pipe formed in the thickness of the cover and extending obliquely with respect to a direction normal to the lid at the passageway so as to be able to fix the pipe to the lid obliquely.
  • the invention it is possible to fix a tubing obliquely with respect to the lid, which makes it possible to limit the overall dimensions of the tubing and, overall, of the exchanger.
  • the tubing is directly oriented obliquely relative to the plane of the lid which allows to offer greater freedom of orientation of the tubing.
  • the dimension of the tubing in the direction orthogonal to the plane of the cover 1 is reduced, which reduces the overall size of the the exchanger.
  • the brazing surface remains large between the lid and the tubing because of the oblique direction of the passage in the lid.
  • the base portion of the tubing being cut obliquely to flush with respect to the lower surface of the lid.
  • the lid is flat, at least in an area in the vicinity of the pipe, and the section of the pipe by an extension plane of said flat area is elliptical.
  • the pipe is cylindrical.
  • the outer surface of the tubing which is in contact with the inner surface of the pipe, is brazed to the lid.
  • the connection is thus made in the thickness of the lid which allows to limit the size of the lid with the oblique tubing.
  • the pipe has an inner surface extending along a wafer of the lid and vis-à-vis the pipe is introduced and brazed.
  • the tubing comprises a base portion mounted in said pipe, in particular at one of its ends, and the base portion extends in a rectilinear manner.
  • Cylindrical tubing according to the prior art with a rectilinear base portion can be mounted in the pipe which limits the manufacturing costs of the lid.
  • the lid having a lower and upper face, the distal end of the base portion is flush with the underside of the lid.
  • the heat transfer fluid led by the tubing, opens into the underside of the cover substantially identically to a cover according to the prior art.
  • a lid with an oblique tubing can therefore advantageously replace a lid with a straight tubing in an exchanger according to the needs.
  • the tubing having a base portion mounted in said pipe the base portion comprises locking means in translation of the tubing relative to the pipe.
  • the base portion has at least one locking pin protruding from the outer surface of the base portion.
  • the locking pin has a flat face intended to come into contact with the upper face of the cover.
  • a face makes it possible to form a stable abutment position between the tubing and the cover.
  • the tubing comprises at least two locking pins, this ensures an angled polarization of the tubing relative to the lid during its introduction. Indeed, when the tubing is introduced into the pipe, it can rotate along the axis of the pipe.
  • the flat face of the locking pin is parallel to the upper face of the lid, the tubing is properly oriented, its angular position being perfectly defined.
  • the cover has a thickness greater than 1.5 mm, preferably equal to 3 mm. Thanks to such a thickness, it is possible to form a solid oblique connection in the thickness of the lid. In addition, for a lid thickness of 3 mm, the formation of a neck by stamping is not easy. A lid according to the invention thus facilitates the connection with the lid.
  • the invention also relates to a heat exchanger comprising a lid as described above.
  • a pipe 5 is brazed to a cover 4 of a heat exchanger 1 of a motor vehicle.
  • a heat exchanger comprises a heat exchange bundle, mounted in an exchanger housing, which is constituted by a plurality of stacked exchange elements.
  • the spaces between the beam exchange elements form, on the one hand, channels for driving a flow of gas to be cooled, for example intake gases and, on the other hand, driving ducts.
  • a heat transfer fluid for exchanging calories with the gas flow to be cooled.
  • Disturbance fins are traditionally arranged in the gas ducts in order to promote the exchange of heat (or calories) between the gas flow and the heat transfer fluid.
  • the lid 4 comprises a passage 6 for circulating a heat transfer fluid in the heat exchange bundle, the pipe 5 being mounted in said passage 6 to allow the circulation of heat transfer fluid in said heat exchanger.
  • the cover 4 is in the form of a rectangular flat plate of constant thickness equal to "f" which has an upper face 41 and a lower face 42. According to the invention, the cover 4 has a thickness greater than 1 , 5 mm and preferably equal to 3 mm.
  • the tubing 5 is cylindrical and has a rectilinear base portion 51, a rectilinear end portion 53 and an angled intermediate portion 52 connecting the base portion 51 to the end portion 53.
  • the tubing 5 is mounted obliquely to the lid 4. Thereafter, the term "oblique" is defined with respect to a direction Z normal to the lid 4 to the right of the passage 6. In other words, the tubing 5 does not is not parallel to the normal Z of the lid 4. For a flat lid 4, as shown on the Figures 3 and 4 , the tubing 5 does not extend orthogonally to the plane defined by the cover 4, at least in a portion penetrating the thickness of the lid, as developed subsequently.
  • the base portion 51 of the tubing 5 is inserted into the passage 6 of the cover 4 which is constituted by a pipe 6 formed in the thickness f of the cover 4 and which extends obliquely.
  • the pipe 6 according to the invention does not comprise a collar which extends orthogonally to the lid 4 from its upper face 41.
  • the duct 6 obliquely crosses the cover 4 from its upper face 41 to its lower face 42 and forms an inclination angle ⁇ relative to the plane of the cover 4.
  • the duct 6 forms an angle of 90 ° - ⁇ relative to the direction Z normal to the cover 4.
  • the angle of inclination ⁇ is greater than 30 ° and less than 90 °, an angle of less than 30 ° may weaken the connection between the tubing 5 and the cover 4.
  • the pipe 6 is here cylindrical and its section, by a plane orthogonal to the Z direction, is elliptical. This advantageously allows the use of tubings according to the prior art as will be detailed later.
  • the base portion 51 is brazed to the pipe 6 by one of its ends along a cylindrical surface with a thickness g as indicated on FIG. figure 3 the thickness g being a function of the thickness f of the cover 4 as well as the angle of inclination ⁇ .
  • the pipe 6 has an inner surface extending along a wafer of the cover 4, that is to say between the upper plane faces 41 and lower 42 of the cover 4, and vis-à-vis the base portion 51 of the tubing 5 is introduced.
  • the brazing surface is larger with an oblique pipe 6 than with a straight pipe for a lid 4 of the same thickness f. This advantageously makes it possible to dispense with a collar to increase the brazing surface, the increase of the brazing surface resulting from the inclination of the duct 6 formed in the cover 4.
  • the distal end of the base portion 51 extends orthogonally to the normal Z of the cover 4, that is to say, in this example, parallel to the plane of the cover 4, so that the tubing 5 is not protruding from the underside 42 of the lid 4. It is thus possible to use the oblique tubular cover according to the invention to replace a straight tubular lid according to the prior art.
  • a cover 4 without protruding tubing 5 makes it possible not to direct the circulation of the coolant during its introduction into the exchanger.
  • the distal end of the base portion 51 of the tubing 5 is flush with the lower face 42 of the cover 4.
  • a straight tubing according to the prior art is advantageously used and the distal end of the base part 51 is machined so as to form an angle bevel corresponding to the angle inclination ⁇ .
  • lids can be formed with straight and oblique tubing.
  • the base portion 51 comprises means for locking the tubing 5 in translation relative to the pipe 6 so as to allow correct positioning of the tubing 5 during its soldering with the cover 4.
  • the base portion 51 has locking pins 7 protruding from the outer surface of the base portion 51 of the tubing 5.
  • the tubing 5 has three locking pins 7 which extend parallel to the plane of the lid 4 and which are distributed at the periphery of the tubing 5 in the same plane parallel to the plane of the cover 4.
  • a locking pin 7 has a flat face 71 intended to come into contact with the upper face 41 of the cover 4
  • the flat faces 71 of the pins 7 come into contact with the upper face 41 of the cover 4, which limits the stroke of the pipe 5 while ensuring stability of the pipe 5. the tubing 5 in the pipe 6.
  • an operator can ensure the proper positioning of the tubing by checking the contact of the pins 7 with the cover 4, the pins 7 filling a function angular polarization of the tubing 5 in the pipe 6. Indeed, when the pipe 5 is introduced into the pipe 6, it can rotate along the axis of the pipe.
  • the tubing 7 is suitably angularly oriented which facilitates the mounting of the tubing 5.
  • the invention is particularly advantageous for lids of thickness of the order of 3 mm for which the formation of a collar is difficult to implement by stamping.
  • the brazing surface is important between the tubing 5 and the pipe 6 which allows the formation of a strong connection whose life is extended.
  • the invention also relates to a heat exchanger, in particular a charge air cooler, comprising a cover as described above.
  • the exchanger comprises, for example, a heat exchange beam for performing a heat exchange between a first fluid and a second fluid.
  • Said beam may be integral with said cover and communicate with two said pipes 5 for the circulation of the first of said fluids, including a cooling liquid such as glycol water.
  • Said beam is formed, in particular, by stacking plates.
  • the plates define flow channels for the first fluid alternating with flow channels for the second fluid.
  • the first plate of the stack is, for example, integral with the lid. Disrupters may be provided between the plates, particularly at the level of the second channels.
  • the flow channels for the first fluid are brought into communication with each other at one end of the plates to define an inlet and outlet manifold for the first fluid, communicating with said tubings 5 which form, for example , an inlet manifold and an outlet manifold for said first fluid.
  • the exchanger comprises, for example, a housing inside which said beam is housed, said housing being configured to allow the second fluid, in particular the supercharging air, to pass through said beam.
  • Said cover is provided capable of closing said housing.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP11170355A 2010-06-30 2011-06-17 Abdeckung eines Wärmetauschers, und eine solche Abdeckung umfassender Wärmetauscher Withdrawn EP2402702A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1002771A FR2962207B1 (fr) 2010-06-30 2010-06-30 Couvercle d'echangeur de chaleur et echangeur de chaleur comprenant un tel couvercle

Publications (1)

Publication Number Publication Date
EP2402702A1 true EP2402702A1 (de) 2012-01-04

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ID=43622628

Family Applications (1)

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EP11170355A Withdrawn EP2402702A1 (de) 2010-06-30 2011-06-17 Abdeckung eines Wärmetauschers, und eine solche Abdeckung umfassender Wärmetauscher

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EP (1) EP2402702A1 (de)
FR (1) FR2962207B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797446A (en) * 1994-05-18 1998-08-25 Alfa Laval Ab Plate heat exchanger
EP1452816A2 (de) * 2003-02-06 2004-09-01 Modine Manufacturing Company Plattenwärmetauscher
JP2004347244A (ja) * 2003-05-22 2004-12-09 Toyo Radiator Co Ltd 熱交換器
EP1804015A1 (de) * 2005-12-27 2007-07-04 Calsonic Kansei Corporation Wärmetauscher
FR2897929A1 (fr) * 2006-02-24 2007-08-31 Valeo Systemes Thermiques Boite collectrice metallique, echangeur de chaleur comportant une telle boite collectrice et procede de fabrication d'une telle boite collectrice
WO2009152830A1 (de) * 2008-06-18 2009-12-23 Gesmex Gmbh Umrüstsatz für einen rohrbündelwärmetauscher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797446A (en) * 1994-05-18 1998-08-25 Alfa Laval Ab Plate heat exchanger
EP1452816A2 (de) * 2003-02-06 2004-09-01 Modine Manufacturing Company Plattenwärmetauscher
JP2004347244A (ja) * 2003-05-22 2004-12-09 Toyo Radiator Co Ltd 熱交換器
EP1804015A1 (de) * 2005-12-27 2007-07-04 Calsonic Kansei Corporation Wärmetauscher
FR2897929A1 (fr) * 2006-02-24 2007-08-31 Valeo Systemes Thermiques Boite collectrice metallique, echangeur de chaleur comportant une telle boite collectrice et procede de fabrication d'une telle boite collectrice
WO2009152830A1 (de) * 2008-06-18 2009-12-23 Gesmex Gmbh Umrüstsatz für einen rohrbündelwärmetauscher

Also Published As

Publication number Publication date
FR2962207A1 (fr) 2012-01-06
FR2962207B1 (fr) 2015-10-23

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