Heat exchanger

Abstract

The invention relates to a heat exchanger ( 1 ), especially for motor vehicles, comprising a housing ( 2 ) and at least one pipe ( 3 ) disposed inside said housing ( 2 ). The heat exchanger is characterized in that structures ( 4 ) are provided in the area between the pipes ( 3 ) and the housing ( 2 ) and/or between the pipes ( 3 ).

1 . A heat exchanger, in particular for motor vehicles, having a housing and at least one tube arranged in the housing, wherein structures are provided in the region between the tubes and the housing and/or between the individual tubes.  
   
   
       2 . The heat exchanger as claimed in  claim 1 , wherein the structures are formed from sheet-metal structures arranged between the tubes and the housing and/or between the individual tubes.  
   
   
       3 . The heat exchanger as claimed in  claim 2 , wherein the sheet-metal structures are finned metal plates, studded metal plates or separate tubes.  
   
   
       4 . The heat exchanger as claimed in  claim 1 , wherein the structures are formed directly on the housing and/or on the tubes.  
   
   
       5 . The heat exchanger as claimed in  claim 4 , wherein the structures are produced by means of stamping.  
   
   
       6 . The heat exchanger as claimed in  claim 1 , wherein the structures are fixedly joined to the housing and/or the tubes, in particular by soldering.  
   
   
       7 . The heat exchanger as claimed in  claim 1 , wherein the tubes are at least in part formed by flat tubes.  
   
   
       8 . The heat exchanger as claimed in  claim 1 , wherein the tubes have supporting studs on the tube outer side.  
   
   
       9 . The heat exchanger as claimed in  claim 1 , wherein the tubes have a tube surface on the inner and/or outer side which is structured so as to generate turbulence.  
   
   
       10 . The heat exchanger as claimed in  claim 1 , wherein the structures at least in part have an inhomogeneous structure.  
   
   
       11 . The heat exchanger as claimed in  claim 1 , wherein the structures are at least partially toothed.  
   
   
       12 . The heat exchanger as claimed in  claim 1 , wherein the housing is formed in two or more parts.  
   
   
       13 . The heat exchanger as claimed in  claim 1 , wherein a medium which is to be cooled flows within the tubes, and a coolant flows in the space between the housing and the tubes and structures.  
   
   
       14 . The heat exchanger as claimed in  claim 1 , wherein the structures are arranged on the coolant side in the housing of the heat exchanger.  
   
   
       15 . The heat exchanger as claimed in  claim 1 , wherein the structures are arranged in the interior of at least one tube.  
   
   
       16 . The heat exchanger as claimed in  claim 1 , wherein the structures are formed as at least one fin which is in particular straight or of undulating depth and/or in particular has gills.  
   
   
       17 . The use of the heat exchanger as claimed in  claim 1 , wherein as an exhaust-gas heat exchanger or a charge-air cooler of a motor vehicle.