EP 0214784 A1 19870318 - Finned heat transfer device and method for making same.
Title (en)
Finned heat transfer device and method for making same.
Title (de)
Gerippte Wärmeaustauscheinrichtung und Methode zu deren Herstellung.
Title (fr)
Dispositif d'échange de chaleur à ailettes et méthode de fabrication.
Publication
Application
Priority
US 76780185 A 19850821
Abstract (en)
The invention provides a fin structure (3), and a method and apparatus for forming a fin structure (3), for application to the exterior of a tube (4) to form a heat transfer device effective in minimizing frost bridging in refrigeration operations. The fin structure is wound helically onto a refrigerant-carrying tube (4), and comprises an integrally formed chain of looped fins (3), each looped fin having a mounting flange (8,9) at each end thereof and comprising two vertical fin portions (10a,10b) extending respectively from each mounting flange (8,9) and connected together by a bridge portion (10c,10s); the method and apparatus for making the same includes a unitary stretch preforming process to reform thin lanced sheet metal fin stock (2) into the final looped fin shape (3) in a single forming step.
IPC 1-7
IPC 8 full level
F28F 1/12 (2006.01); B21C 37/26 (2006.01); B21D 53/02 (2006.01); B21D 53/06 (2006.01); F28F 1/36 (2006.01)
CPC (source: EP KR)
B21C 37/26 (2013.01 - EP); F28F 1/30 (2013.01 - KR); F28F 1/36 (2013.01 - EP)
Citation (search report)
- [Y] US 2196186 A 19400409 - BERG ALFRED J, et al
- [Y] DE 1108716 C
- [Y] US 3288209 A 19661129 - WALL ALAN J, et al
- [Y] US 3005253 A 19611024 - VENABLES III HERBERT J
- [YD] US 4184544 A 19800122 - ULLMER HAROLD J [US]
- [A] FR 1288056 A 19620324
- [A] US 3201847 A 19650824 - RASMUSSEN GUSTAV [DE]
- [AD] US 3134166 A 19640526 - VENABLES III HERBERT J
- [A] FR 2352599 A1 19771223 - CARRIER CORP [US]
- [A] US 3550235 A 19701229 - JARVIS HYRUM T, et al
- [A] GB 800265 A 19580820 - GUY DAVIES
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0214784 A1 19870318; EP 0214784 B1 19900117; BR 8603953 A 19870324; CA 1292466 C 19911126; CN 1008943 B 19900725; CN 86105158 A 19870603; DE 3668372 D1 19900222; ES 2001385 A6 19880516; HK 3292 A 19920117; JP H0697156 B2 19941130; JP S6291792 A 19870427; KR 870002434 A 19870331; KR 940007196 B1 19940808; MX 170908 B 19930922
DOCDB simple family (application)
EP 86306379 A 19860818; BR 8603953 A 19860819; CA 515218 A 19860801; CN 86105158 A 19860821; DE 3668372 T 19860818; ES 8601250 A 19860821; HK 3292 A 19920109; JP 19410086 A 19860821; KR 860006920 A 19860821; MX 350186 A 19860821