Patent ID: 6901996

Claim:
A coolant/air heat exchanger core assembly, comprising: a plurality of plates ( 4 ) and at least a coolant passage and an air passage being formed between said plates ( 4 ), said coolant passage having a plurality of channels ( 34 , 42 ) being bounded at the sides by partitions arranged perpendicular to said plates ( 4 ) and said air passages ( 9 ) being bounded by bars ( 5 a , 5 b , 7 , 8 ) arranged between and facing said plates ( 4 ), said partitions and bars being fixed to said plates ( 4 ) by soldering, and a plurality of diverting sections ( 38 , 43 ) connecting ends of said channels ( 34 , 42 ) in serpentine or meandering form such that coolant can pass through them one after the other, wherein said partitions are formed by webs ( 33 a ) and/or flanges ( 41 b ) of profiles ( 33 , 41 ) with I and/or U shaped cross-sections arranged between said plates ( 4 ) wherein said diverting sections ( 36 ) are formed by offset of said I profiles ( 33 ) affected on longitudinal direction, and wherein plugs ( 37 ) are provided for bounding said diverting sections ( 36 ) at outside portions thereof, said plugs ( 37 ) being connected by soldering to flanges ( 33 b , 33 c ) and plates ( 4 ), and wherein channel sections remaining between said plug ( 37 ) and said webs ( 33 a ) of each second I profile ( 33 ) are closed by welding.