EP 0772017 A3 19980729 - Heat exchanger tube
Title (en)
Heat exchanger tube
Title (de)
Wärmetauscherrohr
Title (fr)
Tube d'échangeur de chaleur
Publication
Application
Priority
DE 29517325 U 19951102
Abstract (en)
[origin: EP0772017A2] The tube has a circular cross section (1) at its connection end, and flattened portions (2) in their middles. The cross-section of these is adapted to the volume of heating gases passing through the tubes. The middle is preferably produced by pressing the tubes from two sides, producing an oval (4) or rectangular cross-section. For high pressures, the opposite sides comes into contact at the centre. Twists or radial corrugations may also be provided.
IPC 1-7
IPC 8 full level
CPC (source: EP)
F24H 1/40 (2013.01); F28F 1/06 (2013.01); F28F 1/426 (2013.01)
Citation (search report)
- [XY] WO 8400207 A1 19840119 - ZANDER & INGESTROEM [SE]
- [Y] EP 0162827 A2 19851127 - ARMATURJONSSON AB [SE]
- [X] DE 4343405 A1 19950622 - FRIEDRICH AMBS GMBH & CO KG AP [DE]
- [PX] AT 400365 B 19951227 - FERCHER JOSEF [AT]
- [A] US 4216819 A 19800812 - NOTARO FRANK [US]
- [DA] DE 7427097 U
Designated contracting state (EPC)
AT CH DE FR LI NL
DOCDB simple family (publication)
DE 29517325 U1 19960201; EP 0772017 A2 19970507; EP 0772017 A3 19980729
DOCDB simple family (application)
DE 29517325 U 19951102; EP 96114202 A 19960905