Heat exchanger, in particular for an internal combustion engine

Abstract

A heat exchanger, in particular for an internal combustion engine, comprising a plurality of flat tubes that extend parallel to one another and are each oriented with a longitudinal side in a primary flow direction of a fluid, and a base, wherein a plurality of passages into which each of the flat tubes terminate are provided in the base, wherein at least four rows of flat tubes are arranged one behind the other in the primary flow direction, all of which terminate in the base.

1 . A heat exchanger for an internal combustion engine, the heat exchanger comprising:
 a plurality of flat tubes that extend parallel to one another and are each oriented with a longitudinal side in a primary flow direction of a fluid;   a base having a plurality of passages into which each of the flat tubes terminate;   at least four rows of flat tubes arranged one behind the other in the primary flow direction, all of the rows terminating in the base.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the number of rows is precisely four. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein each of the flat tubes of a row is aligned with a flat tube of a subsequent or preceding row. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein a maximum depth of the plurality of flat tubes in the primary direction of flow is at least as large as a maximum width of the flat tubes transverse to the primary direction of flow. 
     
     
         5 . The heat exchanger according to  claim 1 , wherein a maximum depth of the plurality of flat tubes in the primary direction of flow is smaller than a maximum width of the flat tubes transverse to the primary direction of flow. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein the flat tubes have at least one division running in a longitudinal direction, the division being in the form of a crease-like indentation. 
     
     
         7 . The heat exchanger according to  claim 1 , wherein the passages have at least one projection corresponding to the indentation. 
     
     
         8 . The heat exchanger according to  claim 1 , wherein the heat exchanger is a radiator, an intercooler, an evaporator of an air conditioner, or a condenser/gas cooler of an air conditioner.