Title (en)

Heat exchanger, more particularly for exhaust gases

Title (de)

Wärmeübertrager, insbesondere Abgaswärmeübertrager

Title (fr)

Echangeur de chaleur, en particulier pour gaz d'échappement

Publication

EP 0851197 A3 19990519 (DE)

Application

EP 97120667 A 19971126

Priority

DE 19654368 A 19961224

Abstract (en)

[origin: EP0851197A2] The heat-exchanger has a bundle of rectangular-section tubes, through which gas flows, enclosed in a casing. The latter forms a guide with an inlet and an outlet for liquid coolant. External protrusions (22) on the tubes determine their distance from each other and also from the inside surface of the casing (11). Each tube may be formed by two U-section half-shells, with bottoms in which the protrusions are embossed, these typically being situated in a central row. They may have oval bottom surfaces whose greatest dimension extends in the flow direction. At right angles to this direction their cross-section may be approximately semi-cylindrical.

IPC 1-7

F28D 7/00; F28F 1/04; F28F 3/04

IPC 8 full level

F28D 7/00 (2006.01); F28D 7/16 (2006.01); F28F 1/04 (2006.01); F28F 1/42 (2006.01); F28F 3/04 (2006.01); F28F 9/013 (2006.01); F28F 9/02 (2006.01)

CPC (source: EP US)

F28D 7/0041 (2013.01 - EP US); F28D 7/1684 (2013.01 - EP US); F28F 1/045 (2013.01 - EP US); F28F 1/42 (2013.01 - EP US); F28F 1/422 (2013.01 - EP US); F28F 3/042 (2013.01 - EP US); F28F 9/013 (2013.01 - EP US); F28F 9/0221 (2013.01 - EP US); F28D 21/0003 (2013.01 - EP US); F28F 2001/027 (2013.01 - EP US); F28F 2240/00 (2013.01 - EP US)

Citation (search report)

• [PDXA] EP 0772018 A2 19970507 - BEHR GMBH & CO [DE]
• [XY] US 4206806 A 19800610 - TOGASHI AKIRA [JP]
• [Y] LU 39794 A1 19610418
• [Y] EP 0677715 A1 19951018 - BEHR GMBH & CO [DE]
• [X] AU 542505 B2 19850221 - RACECOURSE CO OPERATIVE SUGAR
• [X] FR 339401 A 19040609 - GOTTFRIED EGLOFF [CH]
• [A] GB 688638 A 19530311 - AIR PREHEATER

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

DE 19654368 A1 19980625; DE 19654368 B4 20060105; DE 59706551 D1 20020411; EP 0851197 A2 19980701; EP 0851197 A3 19990519; EP 0851197 B1 20020306; US 6321835 B1 20011127

DOCDB simple family (application)

DE 19654368 A 19961224; DE 59706551 T 19971126; EP 97120667 A 19971126; US 99672497 A 19971223