EP 2101136 B1 20150114 - Metallic heat exchanger tube
Title (en)
Metallic heat exchanger tube
Title (de)
Metallisches Wärmeaustauscherrohr
Title (fr)
Tube d'échangeur de chaleur métallique
Publication
Application
Priority
DE 102008013929 A 20080312
Abstract (en)
[origin: DE102008013929B3] The pipe i.e. integrally rolled ribbed type pipe (1), has ribs (2) running helically on a pipe exterior. Primary grooves (6) are found between the adjacent ribs. An undercut secondary groove (8) is arranged in an area of a groove base (7) of the primary grooves. A pair of oppositely lying material edges (9) extends continuously along the primary grooves. A cross section of the secondary groove is varied in space intervals without influencing a shape of the ribs. A distance is formed between the edges such that the distance is varied in spaced intervals to form local cavities (10).
IPC 8 full level
F28F 1/40 (2006.01); F28F 1/36 (2006.01); F28F 13/18 (2006.01)
CPC (source: EP KR US)
F28F 1/10 (2013.01 - KR); F28F 1/36 (2013.01 - EP US); F28F 1/42 (2013.01 - KR); F28F 13/187 (2013.01 - EP US)
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 MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102008013929 B3 20090409; BR PI0900816 A2 20100119; BR PI0900816 B1 20201110; CN 101532795 A 20090916; CN 101532795 B 20130724; EP 2101136 A2 20090916; EP 2101136 A3 20130807; EP 2101136 B1 20150114; JP 2009216374 A 20090924; JP 5684456 B2 20150311; KR 20090097773 A 20090916; MX 2009001692 A 20091005; PT 2101136 E 20150422; US 2009229807 A1 20090917; US 8281850 B2 20121009
DOCDB simple family (application)
DE 102008013929 A 20080312; BR PI0900816 A 20090309; CN 200910001510 A 20090105; EP 09002560 A 20090224; JP 2009007352 A 20090116; KR 20090002202 A 20090112; MX 2009001692 A 20090213; PT 09002560 T 20090224; US 32273509 A 20090206