Heat exchanger for vehicles and process for producing the same

Abstract

A heat exchanger element has a row of multiple channel flat pipes ( 3 ) that are mutually spaced apart and have ends connected in a fluid-tight manner to a tubular connector container ( 6 ) and to a tubular distributor ( 1 ). The ends of the multiple channel flat pipes ( 3 ) are separated into multiple zones ( 3′, 3″ ) shaped in such a way that each zone ( 3′, 3″ ) is parallel at its end on the side of the connection to the main plane of the multiple channel flat pipes ( 3 ), and the zones ( 3′, 3″ ) overlap at least partially in the direction of the longitudinal axis of the collector container ( 6 ) and distributor ( 1 ).

1 . Heat exchanger element having a row of multiple channel flat pipes ( 3 ), the ends of the multiple channel flat pipes ( 3 ) being connected in a fluid-tight manner to a tubular collector container ( 6 ) and a tubular distributor ( 1 ) characterized by that the multiple channel flat pipes ( 3 ) at the ends thereof are divided into several zones ( 3 ′,  3 ″) shaped such that each of the zones ( 3 ′,  3 ″) at its end directed to the connection is aligned parallel to the main plane of extension of the multiple channel flat pipes ( 3 ) and the zones ( 3 ′,  3 ″) at least partly overlap in direction of the longitudinal axes of the collector container ( 6 ) and the distributor ( 1 ). 
     
     
         2 . Heat exchanger element to  claim 1  characterized by that the multiple channel flat pipes ( 3 ) at the ends thereof are divided into two zones ( 3 ′,  3 ″) shaped such that each of the zones ( 3 ′,  3 ″) at its end directed to the connection is aligned parallel to the main plane of extension of the multiple channel flat pipes ( 3 ) and the zones ( 3 ′,  3 ″) at least partly overlap in direction of the longitudinal axes of the collector container ( 6 ) and the distributor ( 1 ). 
     
     
         3 . Heat exchanger element to  claim 1  characterized by that the longitudinal axes of the collector container ( 6 ) and the distributor ( 1 ) run vertical to the main plane of extension of the multiple channel flat pipes ( 3 ). 
     
     
         4 . Heat exchanger element to  claim 1  characterized by that the multiple channel flat pipes ( 3 ) at the ends thereof are divided into two zones ( 3 ′,  3 ″) of equal width. 
     
     
         5 . Heat exchanger element to  claim 1  characterized by that both zones ( 3 ′,  3 ″) at the ends of the multiple channel flat pipes ( 3 ) are shaped such that each of the zones ( 3 ′,  3 ″) at its end directed to the connection is aligned parallel to the main plane of extension of the multiple channel flat pipes ( 3 ), the ends of the zones ( 3 ′,  3 ″) lie behind each other in longitudinal direction of the collector container ( 6 ) and the distributor ( 1 ). 
     
     
         6 . Heat exchanger element to  claim 1  characterized by that the multiple channel flat pipes ( 3 ) are made of aluminum. 
     
     
         7 . Heat exchanger element to  claim 1  characterized by that the multiple channel flat pipes ( 3 ) contain at least twelve single channels ( 7 ). 
     
     
         8 . Process for producing a heat exchanger element characterized by that at least the following steps are included:
 dividing ends of multiple channel flat pipes to form several zones;   spreading the end zones in a main plane of extension of the multiple channel flat pipes;   bending the end zones out of the main plane of extension of the multiple channel flat pipes;   pushing the end zones of the multiple channel flat pipes over each other, until they overlap at least partly at a pre-given distance parallel to each other;   inserting the end zones of the multiple channel flat pipes in prepared slits of a collector container and a distributor;   connecting the end zones of the multiple channel flat pipes to the collector container and the distributor.   
     
     
         9 . Process to  claim 8  characterized by that the ends of the multiple channel flat pipes are divided into two zones. 
     
     
         10 . Process to  claim 9  characterized by that the ends of the multiple channel flat pipes are divided into two zones of equal width. 
     
     
         11 . Process to  claim 10  characterized by that both end zones of the multiple channel flat pipes are pushed over each other so far that both end zones run parallel to each other and to the main plane of extension of the multiple channel flat pipes and the end zones lie behind each other in a direction vertical to the main plane of extension of the multiple channel flat pipes. 
     
     
         12 . Process to  claim 8  characterized by that the connection of the end zones of the multiple channel flat pipes to the collector container and the distributor is made by brazing. 
     
     
         13 . Process to  claim 8  characterized by that the end zones of the multiple channel flat pipes are shaped with the aid of a bending gauge. 
     
     
         14 . Process to  claim 13  characterized by that shaping the end zones of the multiple channel flat pipes with the aid of the bending gauge is performed by bending with at least 6 different radii.