EP 1952904 A3 20090218 - Forming process and forming device for the production of a fold in a heat exchanger tube
Title (en)
Forming process and forming device for the production of a fold in a heat exchanger tube
Title (de)
Umformverfahren und Umformvorrichtung zum Herstellen eines Eckfalzes für Wärmetauscherrohre
Title (fr)
Procédé de déformation et dispositif de déformation pour la formation d'un pliage dans un tube d'échangeur de chaleur
Publication
Application
Priority
DE 102007005590 A 20070205
Abstract (en)
[origin: EP1952904A2] The method involves bending and compressing corner seams (4) of a metal strip (1) in three bending stages and two compression stages by using upper and lower rollers. A chamfer is impressed at a free end of the corner seams in the compression stages. A ring groove of the rollers is provided for deforming the corner seams, and the rollers are emanating from groove flanks. A wedge-shaped opening is provided between the corner seams and the groove flanks. An intermediate space is provided at an inner side of the corner seams. An independent claim is also included for a deformation device for manufacturing corner seams for a heat exchanger pipe.
IPC 8 full level
B21D 5/12 (2006.01); B21D 5/08 (2006.01); B21D 53/04 (2006.01); B21D 53/08 (2006.01); F28D 1/00 (2006.01); F28F 1/00 (2006.01)
CPC (source: EP)
B21C 37/14 (2013.01); B21D 19/043 (2013.01); F28D 1/0391 (2013.01); F28F 1/022 (2013.01)
Citation (search report)
- [XA] FR 2836546 A1 20030829 - VALEO THERMIQUE MOTEUR SA [FR]
- [XA] US 2003145465 A1 20030807 - ANDERS JAMES [US], et al
- [XA] WO 02086408 A1 20021031 - VALEO THERMIQUE MOTEUR SA [FR], et al
- [XA] EP 1213555 A1 20020612 - ZEXEL VALEO CLIMATE CONTR CORP [JP]
- [XA] JP 2004276070 A 20041007 - DENSO CORP
- [XA] DE 19958935 A1 20000615 - VALEO THERMIQUE MOTEUR SA [FR]
- [DXA] EP 0829316 A2 19980318 - DENSO CORP [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 1952904 A2 20080806; EP 1952904 A3 20090218; EP 1952904 B1 20120829; DE 102007005590 A1 20080807
DOCDB simple family (application)
EP 08000606 A 20080115; DE 102007005590 A 20070205