Title (en)

Heat exchanger.

Title (de)

Wärmetauscher.

Title (fr)

Echangeur de chaleur.

Publication

EP 0108525 A1 19840516 (EN)

Application

EP 83306295 A 19831017

Priority

US 43892082 A 19821103

Abstract (en)

Fluid heat exchangers of various configurations are disclosed, which exhibit improved performance resulting from the use of an inner tube (10) having annular corrugations (12) which provide a substantially increased surface area. One fluid (16) flows through the inner tube which is disposed within an outer tube (20), and another fluid (30) flows through the generally annular-section passageway between the inner and outer tubes.

IPC 1-7

F28D 7/10; F28F 1/08

IPC 8 full level

F28D 7/02 (2006.01); F28D 7/10 (2006.01); F28F 1/08 (2006.01)

CPC (source: EP)

F28D 7/024 (2013.01); F28D 7/106 (2013.01); F28F 1/08 (2013.01)

Citation (search report)

• [X] US 4270601 A 19810602 - LANCASTER ARTHUR
• [X] FR 2322345 A1 19770325 - MULTIFLUID EN [FR]
• [A] FR 2404824 A1 19790427 - FORTSCHRITT VEB K [DD]
• [AD] FR 1176522 A 19590413 - CALUMET & HECLA
• [A] FR 1499286 A 19671027 - HACKETHAL DRAHT & KABELWERK AG
• [A] US 4171634 A 19791023 - PERKINS ROBERT W [US]
• [A] DE 2236954 A1 19730208 - ALFA ROMEO SPA
• [A] US 3267997 A 19660823 - MATARESE JOSEPH F, et al
• [A] US 3219106 A 19651123 - AHERN JOHN E
• [A] US 3921708 A 19751125 - BRENNER LOTHAR P

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0108525 A1 19840516; JP S59100392 A 19840609

DOCDB simple family (application)

EP 83306295 A 19831017; JP 20499283 A 19831102