EP 1253391 B1 20060628 - Folded flat tube with multiple cavities
Title (en)
Folded flat tube with multiple cavities
Title (de)
Gefalztes Mehrkammerflachrohr
Title (fr)
Tube plat plié à cavités multiples
Publication
Application
Priority
DE 10121001 A 20010428
Abstract (en)
[origin: EP1253391A1] The flat tube (1) is made from a sheet (2) and has folded webs (3-5) and a longitudinal seam (6). There are breakthroughs (12) in the webs to improve heat transfer and to create a transverse flow. The breakthroughs should preferably be stamped from the sheet before folding and brought under cover after the folding process.
IPC 8 full level
CPC (source: EP US)
F28D 1/0391 (2013.01 - EP US); F28F 1/022 (2013.01 - EP US); Y10T 29/49391 (2015.01 - EP US)
Citation (examination)
PATENT ABSTRACTS OF JAPAN vol. 16, no. 007 (M - 1198)
Designated contracting state (EPC)
AT DE ES FR
DOCDB simple family (publication)
EP 1253391 A1 20021030; EP 1253391 B1 20060628; AT E331927 T1 20060715; DE 10212300 A1 20021114; DE 50207354 D1 20060810; ES 2266331 T3 20070301; US 2002174979 A1 20021128; US 6622785 B2 20030923
DOCDB simple family (application)
EP 02006243 A 20020320; AT 02006243 T 20020320; DE 10212300 A 20020320; DE 50207354 T 20020320; ES 02006243 T 20020320; US 13238302 A 20020426