FR2852543A1 - 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 - Google Patents

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 Download PDF

Info

Publication number
FR2852543A1
FR2852543A1 FR0303423A FR0303423A FR2852543A1 FR 2852543 A1 FR2852543 A1 FR 2852543A1 FR 0303423 A FR0303423 A FR 0303423A FR 0303423 A FR0303423 A FR 0303423A FR 2852543 A1 FR2852543 A1 FR 2852543A1
Authority
FR
France
Prior art keywords
flange
cover
connection
blind hole
bearing
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
FR0303423A
Other languages
French (fr)
Other versions
FR2852543B1 (en
Inventor
Sylvain Hubert
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 Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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 Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Priority to FR0303423A priority Critical patent/FR2852543B1/en
Publication of FR2852543A1 publication Critical patent/FR2852543A1/en
Application granted granted Critical
Publication of FR2852543B1 publication Critical patent/FR2852543B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0243Header boxes having a circular cross-section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture 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
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/28Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29Making branched pieces, e.g. T-pieces
    • B21C37/292Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031Joining superposed plates by locally deforming without slitting or piercing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0246Arrangements for connecting header boxes with flow lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0246Arrangements for connecting header boxes with flow lines
    • F28F9/0251Massive connectors, e.g. blocks; Plate-like connectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0246Arrangements for connecting header boxes with flow lines
    • F28F9/0256Arrangements for coupling connectors with flow lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00Fastening; Joining
    • F28F2275/12Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Abstract

The invention relates to a method of fixing a connection flange (30) to a cover (22) of a manifold of a heat exchanger. The flange is produced in the form of a solid machined block having a bearing face (32) arranged to come into contact with a wall (28) of the cover. A blind hole (50) is made in the support face (32) of the flange, the wall (28) of the cover is positioned against the support face (32) of the flange, and the wall ( 28) of the cover so that this wall penetrates into the blind hole (50) in order to make a mechanical connection by clinching, the flange serving as an anvil. The flange can then be brazed to the cover. Application in particular to the manufacture of air conditioning condensers for motor vehicles.

Description

Method of fixing a connection flange to a
  The invention relates to a method of fixing a connection flange to a manifold cover of a heat exchanger, in particular of an air conditioning condenser for a motor vehicle.
  It applies in particular to the production by brazing of heat exchangers, assembled from metal components, typically made of aluminum-based material. In such heat exchangers, manifolds are placed in communication with one another by tubes and are connected to external conduits by connection flanges. These external conduits are used for the entry and exit of a fluid which passes through the exchanger and which exchanges heat with an air flow. In the case of a condenser, the fluid is a refrigerant.
  The end of each outer conduit is received in a bore passing through the body of the flange which positions the bore opposite a communication hole with a manifold. The end of the outer duct is held by a counter flange which generally bears against an annular bead external to the duct. To ensure good mechanical resistance to stresses, the flange is machined from a solid block, for example, from an aluminum alloy, then is fixed externally to a wall of the collector by brazing.
  In the current techniques for manufacturing heat exchangers, it is desired that the assembly by brazing of the various components of the exchanger is carried out in a single operation by passage through a brazing furnace.
  It is therefore necessary to temporarily secure the connection flange to the manifold, here on the manifold cover. Indeed, this collector comprises two parts, respectively forming two half-shells. 5 One of the half-shells receives the ends of the bundle tubes, while the other half-shell, which forms a cover, receives the connection flange.
  Different solutions are used to provide temporary fixing of the flange on the cover of the manifold.
  A first known solution consists in machining the flange with a chimney which extends the bore on the side of the bearing face 15. This chimney, which thus forms a tubular section with a thin wall, is introduced into a hole in the cover of the manifold and is then deformed by crimping. The production of this crimp chimney is complex to carry out and involves additional costs. A second known solution consists in previously welding the flange on the cover, for example, by means of a so-called TIG weld. However, the implementation of such a weld leads to additional operations, therefore costly, which moreover risk affecting the quality of the assembly.
  A third known solution consists in carrying out a crimping operation by means of a connecting tube. This connecting tube constitutes an additional part which is crimped both in the bore of the fixing flange, which must be specially fitted, and which is also crimped in a hole in the cover. This requires an additional room therefore additional costs. In addition, crimping the tube into the bore may cause streaking.
  The object of the invention is in particular to overcome the drawbacks of known solutions.
  It aims in particular to provide a method of fixing a connection flange to a manifold cover which makes it possible to provide temporary fixing of the connection flange to the manifold cover, safely and effectively, without incurring costs additional.
  To this end, the invention provides a method of fixing a connection flange to a manifold cover for a heat exchanger, in which the flange is produced in the form of a solid machined block having a bearing face. arranged to come into contact with a wall of the cover.
  According to the invention, the method comprises the operations consisting in a) making a blind hole of selected shape in the bearing face of the flange; b) positioning the wall of the cover against the bearing face 20 of the flange; and c) locally deforming the wall of the cover so that this wall penetrates into the blind hole in order to make a mechanical connection by clinching, the flange serving as an anvil. Clinching is a mechanical bonding operation which, until now, has mainly been used to join two thin parts. This operation is based on a mechanical deformation carried out essentially by stamping and pressing, which makes it possible to jointly deform the respective walls of the two parts by means of a punch, an anvil being applied to one of the parts, opposite the punch. to hold the two pieces together.
  In the invention, this clinching is carried out between a thin piece, namely the cover of the collector, and a thicker piece, namely the connection flange which is produced in the form of a solid block.
  A special feature of the invention lies in the fact that the connection flange itself plays the role of the anvil.
  For this, the punch deforms the material of the wall of the collector, which comes to be embedded in the blind hole previously made in the flange.
  This results in a temporary mechanical connection ensuring correct fixing of the flange and the manifold, for brazing. In addition, as the wall of the cover is deformed, without perforation, there is no risk of creating leaks which could affect the proper functioning of the heat exchanger.
  The blind hole produced in operation a) is advantageously of substantially cylindrical shape.
  In a preferred embodiment of the invention, the blind hole is of substantially circular cylindrical shape and it comprises a closed circular face constituting the bottom 20 of the blind hole and an open circular face opening into the bearing face of the flange, the diameter of the closed face being greater than or equal to the diameter of the open face.
  According to yet another characteristic of the invention, the local deformation of the wall of operation c) comprises a stamping and a pressing of the wall by means of a punch. This punch advantageously has an end of generally circular shape. However, other forms are also possible.
  The method of the invention advantageously comprises an additional operation d) consisting in definitively assembling the flange and the cover by brazing.
  In another aspect, the invention relates to a connection flange for implementing the method defined above. The connection flange is produced in the form of a solid machined block having a bearing face arranged to come into contact with a wall of the cover, and in which a blind hole of selected shape is produced.
  The bearing face of the flange advantageously has a shape conjugate with that of the wall of the cover. It is advantageously made of a material based on aluminum.
  In the description which follows, made only by way of examples, reference is made to the appended drawings, in which: FIG. 1 is a partial side view of a heat exchanger comprising a collector, the cover of which receives a flange of connection; - Figure 2 is a top view corresponding to Figure 1; - Figure 3 is a perspective view of a connection flange according to the invention; FIG. 4 is a view in longitudinal section of a connection flange according to the invention before attachment to a manifold cover; - Figure 5 is a view similar to Figure 4 after positioning of the manifold cover; - Figure 6 is a view similar to Figure 5 during the clinching operation; and - Figure 7 is a view similar to Figure 6 after the clinching operation.
  Reference is first made to FIGS. 1 and 2 which partially represent a heat exchanger 10 produced here in the form of a condenser capable of being part of an air conditioning installation of a motor vehicle. The condenser 10 generally consists of a bundle 12 formed of an alternating stack of flat tubes 14 and fins 16 of corrugated shape. The tubes 14 of the bundle are connected to two collectors 18, only one of which is shown in FIGS. 1 and 2.
  This collector 18 is of generally tubular shape. It is formed of two parts 20 and 22 in the form of half-shells. Part 20 has a profile of substantially semi-cylindrical shape and has slots 24 for receiving a first end of the tubes 14. Part 22, which forms a cover, also has a profile of substantially semi-cylindrical shape. It has flanges 26 allowing the ends of the part 22 to be fitted. The part 22, which will be called "cover" below, is delimited by a wall 28 of semi-cylindrical shape. 15 Outside this wall 28 is fixed a flange 30 produced in the form of a solid machined block, of generally parallelepipedal shape, advantageously made of an aluminum-based alloy. The flange 30 has a bearing face 32, 20 which can also be seen in FIG. 3, which has a shape which is conjugate with that of the wall 28 of the cover 22 to closely fit against it.
  The flange 30 comprises a flat wall 34 opposite the wall 32. A bore 36 passes right through the flange 30 to open respectively on the faces 32 and 34.
  The bore 36 receives, on the side of the face 34, the end of an external conduit 38. This conduit comprises a bead 40 to limit its introduction into the bore. A counter flange 42 is fixed to the flange by means of a screw 44 which cooperates with a non-through bore 46. The counter flange 42 has an H-shaped end 46 which presses on the bead to hold the outer tube 38. A seal (not shown) is interposed between the end of the conduit 38 and the bore 36, which has a stepped shape.
  Reference is now made to FIG. 4 which shows the stepped bore 36 opening on the two faces 32 and 34 and the bore 46 which opens only on the face 34. In accordance with the invention, the face of support 32 of the flange, a blind hole 50 of selected shape. This blind hole is advantageously of substantially cylindrical shape, preferably substantially cylindrical circular. It is made over a limited depth, which can be for example a few millimeters.
  For the remainder of the method, the flange is placed in position 10 in FIG. 4, the bearing face 32 being oriented upwards.
  Then, as shown in FIG. 5, the cover 22 is placed so that its wall 28 is received in the bearing face 32. For this, the cover is positioned so that the opening 52 which it comprises is aligned with the outlet of bore 36.
  In a subsequent operation, as shown in Figure 6, a punch 54 is moved which has a head or end 56 of selected shape. This punch is moved vertically up and down in the direction of arrow F. The end 56 of the punch comes into contact with the wall 28 of the cover and gradually deforms the wall, in a localized area, so that it marries the shape imposed by the blind hole 50 of the flange 30. The flange thus forms an anvil with respect to the punch.
  This results in a decrease in the thickness of the wall. This operation, known as "clinching", makes a mechanical connection by form cooperation between the cavity defined by the blind hole 50 and the wall 28 of the cover 22 which is deformed. This clinching allows perfect retention and indexing before and during the subsequent brazing operation which will effect the final fixing of the flange on the cover and, more generally, of all the components of the heat exchanger.
  As can be seen in FIG. 7, after removal of the punch 54, the wall 28 is locally deformed in an area 58. It can be seen in FIG. 7 that the blind hole has a closed face, here of circular shape, which constitutes the bottom 5 and an open face, here circular, which opens into the bearing face of the flange. The diameter D of the closed face is advantageously between 5.5 mm and 6 mm, while the diameter d of the open face is advantageously between 5 mm and 5.5 mm.
  To achieve a good clinching connection, it is desirable that the deformed zone of the manifold wall has a greater extent at the closed face of the blind hole compared to that which it has at the open face of the blind hole.
  It will be understood that the connection flange, because of its massive nature, forms an anvil with respect to the punch, which avoids the use of a separate anvil. The punch can have different chosen shapes which are not necessarily circular.
  The invention finds particular application to the realization of air conditioning condenser for motor vehicles.

Claims (8)

claims
  1 - Method for fixing a connection flange to a manifold cover for a heat exchanger, the connection flange (30) being produced in the form of a solid machined block having a bearing face (32) arranged to come into contact with a wall (28) of the cover (22), characterized in that it comprises the operations consisting in: a) producing a blind hole (50) of chosen shape in the bearing face (32 ) the connection flange (30); b) positioning the wall (28) of the cover (22) against the bearing face (32) of the connection flange; and c) locally deforming the wall (28) of the cover (22) so that this wall (28) penetrates into the blind hole (50) in order to form a mechanical connection by clinching, the flange serving as an anvil.
  2 - Method according to claim 1, characterized in that the blind hole (50) made in operation a) is of substantially cylindrical shape.
  3 - Method according to claim 2, characterized in that the blind hole (50) produced in operation a) is of substantially circular cylindrical shape and has a closed circular face 30 constituting the bottom of the blind hole and a circular open face emerging in the bearing face (32) of the flange, the diameter (D) of the closed face being greater than or equal to the diameter (d) of the open face.
  4 - Method according to claim 3, characterized in that the diameter (D) of the closed face is between 5.5 mm and 6 mm, while the diameter (d) of the open face is between 5 mm and 5 , 5 mm.
  - Method according to one of claims 1 to 4, characterized in that the local deformation of the wall (28) of operation c) comprises a stamping and a pressing of the wall by means of a punch (54).
  6 - Method according to claim 5, characterized in that the punch (54) has one end (56) of generally circular shape.
  7 - Method according to one of claims 1 to 6, characterized in that it comprises an additional operation d) consisting in permanently assembling the connection flange (30) and the cover (22) by brazing.
  8 - Connection flange for implementing the method according to one of claims 1 to 7, characterized in that it is produced in the form of a solid machined block having a bearing face (32) arranged for coming into contact with a wall (28) of the cover (22), and in which a blind hole (50) of selected shape is made.
  9 - Connection flange according to claim 8, characterized in that the bearing face (32) of the connection flange has a shape conjugate with that of the wall (28) of the cover.
  - Connection flange according to one of claims 8 and 9, characterized in that it is made of an aluminum-based material.
FR0303423A 2003-03-20 2003-03-20 Method for attaching a connecting flange to a cooker cover of a heat exchanger Active FR2852543B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0303423A FR2852543B1 (en) 2003-03-20 2003-03-20 Method for attaching a connecting flange to a cooker cover of a heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0303423A FR2852543B1 (en) 2003-03-20 2003-03-20 Method for attaching a connecting flange to a cooker cover of a heat exchanger

Publications (2)

Publication Number Publication Date
FR2852543A1 true FR2852543A1 (en) 2004-09-24
FR2852543B1 FR2852543B1 (en) 2005-06-24

Family

ID=32922318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0303423A Active FR2852543B1 (en) 2003-03-20 2003-03-20 Method for attaching a connecting flange to a cooker cover of a heat exchanger

Country Status (1)

Country Link
FR (1) FR2852543B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025441A1 (en) * 2007-07-31 2009-02-18 Gesenkschmiede Schneider GmbH Method of brazing one metal component with a second metal component using in combination a mechanical jointing; corresponding metal component
WO2011067244A1 (en) * 2009-12-02 2011-06-09 Mahle International Gmbh Heat exchanger connecting system and connecting element for a heat exchanger
WO2011120975A1 (en) * 2010-03-31 2011-10-06 Valeo Systemes Thermiques Heat exchanger comprising a tubular collecting box
FR2958386A1 (en) * 2010-03-31 2011-10-07 Valeo Systemes Thermiques Connection flange i.e. parallelepiped metal block, for use in e.g. condenser of air-conditioning and heating installation of motor vehicle, to enter/leave heat transfer fluid, has two holes establishing fluid connection between each other

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0824967A (en) * 1994-07-19 1996-01-30 Sanyo Mach Works Ltd Joining structure of metal-made sheet material and method therefor
WO1997001059A1 (en) * 1995-06-22 1997-01-09 Valeo Thermique Moteur L-shaped coupling for a tubular collecting box in a vehicle air conditioning condenser
US5622220A (en) * 1993-03-05 1997-04-22 Doowon Climate Control Co., Ltd. Heat exchanger for automobile air conditioning system
WO1999061859A1 (en) * 1998-05-25 1999-12-02 Valeo Thermique Moteur Heat exchanger, in particular motor vehicle condenser and method for making same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5622220A (en) * 1993-03-05 1997-04-22 Doowon Climate Control Co., Ltd. Heat exchanger for automobile air conditioning system
JPH0824967A (en) * 1994-07-19 1996-01-30 Sanyo Mach Works Ltd Joining structure of metal-made sheet material and method therefor
WO1997001059A1 (en) * 1995-06-22 1997-01-09 Valeo Thermique Moteur L-shaped coupling for a tubular collecting box in a vehicle air conditioning condenser
WO1999061859A1 (en) * 1998-05-25 1999-12-02 Valeo Thermique Moteur Heat exchanger, in particular motor vehicle condenser and method for making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 05 31 May 1996 (1996-05-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025441A1 (en) * 2007-07-31 2009-02-18 Gesenkschmiede Schneider GmbH Method of brazing one metal component with a second metal component using in combination a mechanical jointing; corresponding metal component
WO2011067244A1 (en) * 2009-12-02 2011-06-09 Mahle International Gmbh Heat exchanger connecting system and connecting element for a heat exchanger
WO2011120975A1 (en) * 2010-03-31 2011-10-06 Valeo Systemes Thermiques Heat exchanger comprising a tubular collecting box
FR2958388A1 (en) * 2010-03-31 2011-10-07 Valeo Systemes Thermiques HEAT EXCHANGER WITH TUBULAR COLLECTOR BOX
FR2958386A1 (en) * 2010-03-31 2011-10-07 Valeo Systemes Thermiques Connection flange i.e. parallelepiped metal block, for use in e.g. condenser of air-conditioning and heating installation of motor vehicle, to enter/leave heat transfer fluid, has two holes establishing fluid connection between each other

Also Published As

Publication number Publication date
FR2852543B1 (en) 2005-06-24

Similar Documents

Publication Publication Date Title
KR100510838B1 (en) Method of manufacturing piping having joining portion
US5190101A (en) Heat exchanger manifold
US5456006A (en) Method for making a heat exchanger tube
JP2011523998A (en) Heat exchanger
MXPA06010948A (en) Heat exchanger having an improved baffle.
JP3956878B2 (en) Piping joint structure and piping joint connection method
US6053243A (en) Header pipe for heat exchanger and manufacturing apparatus and manufacturing method thereof
US5799397A (en) Pipe with closure portion, heat exchanger header and method of producing therefor
JP4153178B2 (en) Heat exchanger tank and manufacturing method thereof
US20180066901A1 (en) Header for a Heat Exchanger, and Method of Making the Same
US5761808A (en) Method of making a heat exchanger
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
US6186225B1 (en) Heat exchanger with an integrated tank and head sheet
US5771965A (en) Header pipe for heat exchanger
US6374865B1 (en) Method and apparatus for manufacturing a header pipe
US6422302B1 (en) Heat exchanger, in particular motor vehicle condenser and method for making same
EP0761337B1 (en) Pipe with closure portion, heat exchanger header and method of producing therefor
US5743122A (en) Apparatus for making a manifold for an automotive heat exchanger
JPH11118295A (en) Plate-shaped flow divider and manufacture thereof
KR20050055046A (en) Semifinished flat tube, process for producing same, flat tube, heat exchanger comprising the flat tube and process for fabricating the heat exchanger
US6450253B1 (en) Tank of heat exchanger
JP2000218322A (en) Method of manufacturing metallic bent pipe and metallic bent pipe
EP0840083A2 (en) A baffle for a heat exchanger
EP0175743B1 (en) Method of manufacturing hairpin configured tubes
EP1004841B1 (en) Heat exchanger tank

Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 14

PLFP Fee payment

Year of fee payment: 15

PLFP Fee payment

Year of fee payment: 16

PLFP Fee payment

Year of fee payment: 18