EP 1681528 A1 20060719 - HEAT EXCHANGER TUBE
Title (en)
HEAT EXCHANGER TUBE
Title (de)
WÄRMETAUSCHERROHR
Title (fr)
TUBE POUR ECHANGEUR THERMIQUE
Publication
Application
Priority
- JP 2004014005 W 20040916
- JP 2003340601 A 20030930
Abstract (en)
In a heat exchanger tube, a brazing material, which is required for brazing tops (310) of inner fins (300) which are a flow passage dividing body and the inner surface of a tube body portion (200), not clad to a first material which constitutes the tube body portion but clad to a second material which constitutes the inner fins. In the heat exchanger tube, the tube has a thickness t tube of 1.2 mm or less and a width W tube of 16 mm or less, the first material has a thickness t 1 of 0.25 mm or less, the second material has a thickness t 2 of 0.10 mm or less, and the flow passages divided by the inner fins have an equivalent diameter of 0.559mmor less. Besides, when brazing in a furnace, a brazingmaterial disposed within the flowpassages melts earlier than a brazing material which penetrates from outside into the flow passages, thereby preventing the flow passages from being clogged.
IPC 1-7
IPC 8 full level
F28F 1/02 (2006.01); B23K 1/00 (2006.01); F25B 39/00 (2006.01); F28D 1/03 (2006.01); F28F 1/40 (2006.01); F28F 3/02 (2006.01); F28F 19/06 (2006.01); B23K 101/14 (2006.01)
CPC (source: EP US)
F28D 1/0391 (2013.01 - EP US); F28F 1/022 (2013.01 - EP US); F28F 3/025 (2013.01 - EP US); F28F 2275/04 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 1681528 A1 20060719; EP 1681528 A4 20130612; JP 2005106389 A 20050421; US 2007119581 A1 20070531; WO 2005033606 A1 20050414
DOCDB simple family (application)
EP 04773389 A 20040916; JP 2003340601 A 20030930; JP 2004014005 W 20040916; US 57307704 A 20040916