EP 3688398 A2 20200805 - TUBE JOINING
Title (en)
TUBE JOINING
Title (de)
ROHRVERBINDUNG
Title (fr)
ASSEMBLAGE DE TUBES
Publication
Application
Priority
- US 201762563382 P 20170926
- IB 2018001190 W 20180926
Abstract (en)
[origin: WO2019064067A2] Joining thin heat exchanger tubes to manifold header tanks is improved by extruding thick tubes having channels or microchannels. Tube material is removed from spaced areas of central portions, leaving finned thin heat exchanger central portions and thicker header portions. The tubes are curved, twisted and tilted. The tubes are aligned horizontally, vertically or angularly, and the header portions are welded together. Tube material is removed from the ends of the header portions to form end faces with projections extending from the end faces and surrounding the channels or microchannels. End plates with openings to receive the projections are attached and sealed to the projections and end faces by welding or brazing. The face plates are attached and sealed to openings in the header tanks by welding or brazing. Tube ends are flattened. Rings are added. Ends and rings are friction welded, avoiding areas around channel openings, and polished.
IPC 8 full level
F28F 9/18 (2006.01); F28D 1/02 (2006.01); F28D 1/047 (2006.01); F28D 1/053 (2006.01); F28F 1/02 (2006.01); F28F 1/26 (2006.01); F28F 1/34 (2006.01)
CPC (source: EP KR)
F28D 1/047 (2013.01 - EP); F28D 1/0471 (2013.01 - KR); F28D 1/05366 (2013.01 - EP KR); F28F 1/02 (2013.01 - EP); F28F 1/022 (2013.01 - EP KR); F28F 1/025 (2013.01 - EP KR); F28F 1/26 (2013.01 - EP KR); F28F 1/34 (2013.01 - EP KR); F28F 9/18 (2013.01 - EP KR); F28D 2001/0273 (2013.01 - EP KR); F28F 2255/16 (2013.01 - EP KR); F28F 2275/062 (2013.01 - EP KR)
Citation (examination)
- WO 2011088426 A1 20110721 - SKYVENTURE INTERNAT LTD [BS], et al
- US 2014041843 A1 20140213 - LINDELL ERIC [US], et al
- See also references of WO 2019064067A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019064067 A2 20190404; WO 2019064067 A3 20190516; BR 112020006005 A2 20201006; BR 112020006005 B1 20230131; CA 3076953 A1 20190404; CA 3076953 C 20230620; CN 111133269 A 20200508; CN 111133269 B 20240305; CR 20200175 A 20200626; EP 3688398 A2 20200805; JP 2021509164 A 20210318; JP 7203097 B2 20230112; KR 102448720 B1 20220929; KR 20200055777 A 20200521; MX 2020003676 A 20201001
DOCDB simple family (application)
IB 2018001190 W 20180926; BR 112020006005 A 20180926; CA 3076953 A 20180926; CN 201880062389 A 20180926; CR 20200175 A 20180926; EP 18816214 A 20180926; JP 2020518518 A 20180926; KR 20207011854 A 20180926; MX 2020003676 A 20180926