EP 1061318 A1 20001220 - Finned heat exchanger tube and method of production
Title (en)
Finned heat exchanger tube and method of production
Title (de)
Geripptes Wärmetauscherrohr und dessen Herstellung
Title (fr)
Tube d'échange thermique pourvu de nervures et son procédé de fabrication, échangeur de chaleur pourvu d'un tel tube
Publication
Application
Priority
FR 9907865 A 19990616
Abstract (en)
The tube (1) e.g. of a metal such as copper, having an external diameter of some 5 - 20 mm, has a series of lengthwise inner ribs (2) measuring 0.15 - 1.5 mm high and about 1 mm apart. The ribs have an initial asymmetrical triangular cross-section with straight sides, with the tip of each rib offset to one side of its base. The ribs are subsequently curved by passing an olive (3) through the tube, so that the gaps between the tips of adjacent ribs are smaller than the gaps between the ribs' bases. The shaping of the ribs can be carried out at the same time as fins are crimped to the outside of the tube.
IPC 1-7
IPC 8 full level
F28F 1/40 (2006.01)
CPC (source: EP)
F28F 1/40 (2013.01)
Citation (search report)
- [A] WO 9612151 A1 19960425 - UNIV MANCHESTER [GB], et al
- [A] FR 2193188 A1 19740215 - UNIVERSAL OIL PROD CO [US]
- [A] US 5415225 A 19950516 - RANDLETT MYRON R [US], et al
- [DA] FR 2706197 A1 19941216 - TREFIMETAUX [FR]
- [A] PATENT ABSTRACTS OF JAPAN vol. 014, no. 305 (M - 0992) 29 June 1990 (1990-06-29)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1061318 A1 20001220; EP 1061318 B1 20030910; AT E249610 T1 20030915; DE 60005089 D1 20031016; DE 60005089 T2 20040708; ES 2202024 T3 20040401; FR 2795168 A1 20001222; FR 2795168 B1 20010803; PT 1061318 E 20040227
DOCDB simple family (application)
EP 00420129 A 20000615; AT 00420129 T 20000615; DE 60005089 T 20000615; ES 00420129 T 20000615; FR 9907865 A 19990616; PT 00420129 T 20000615