ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRISYU........JDIM360 (Ver 1.5 21 Nov 2005) - 1620000/01610080EUROPEAN PATENT APPLICATIONA320061213EP05253669.520050614enenen200418361320040622JP2006121320065020051228200552F28D 1/03 20060101AFI20050923BHEP deGestapelte mehrflutige Wärmetauscher und Verfahren zu deren HerstellungenStacking-type, multi-flow, heat exchangers and methods for manufacturing such heat exhangersfrEchangeurs de chaleur à empilage à passages multiples et leur procédé de fabricationNONESanden Corporation00509721SAH03833EP20 Kotobuki-choIsesaki-shi, Gunma 372-8502JPChiba, TomohiroSanden Corporation 20, Kotobuki-choIsesaki-shi Gunma 372-8502JPOhno, TakayukiSanden Corporation 20, Kotobuki-choIsesaki-shi Gunma 372-8502JPKazari, KengoSanden Corporation 20, Kotobuki-choIsesaki-shi Gunma 372-8502JPHaley, Stephen00079721Gill Jennings & Every LLP Broadgate House 7 Eldon StreetLondon EC2M 7LHGBATBEBGCHCYCZDEDKEEESFIFRGBGRHUIEISITLILTLUMCNLPLPTROSESISKTRALBAHRLVMKYU20061213200650

A stacking-type, multi-flow, heat exchanger (1) includes heat transfer tubes (2) and outer fins (3) stacked alternatively. Each heat transfer tube (2) is formed by connecting a pair of tube plates (30), and each heat transfer tube includes a raised portion (45,46) fixing the pair of tube plates (30) to each other. The raised portions (45,46) are formed by elongating or raising a portion of the pair of tube plates (30) substantially simultaneously at a position at which a pair of holes (41), each of which is formed through one tube plate (30) beforehand, are aligned. Complicated steps, such as inserting a raised portion into a hole, are not necessary. The number of types of tube plates (30) also may be reduced. Moreover, the efficiency of assembling a heat transfer tube when fixing a pair of tube plates to each other may be significantly increased.