A heat exchanger

Abstract

A heat exchanger for heat exchange between a first fluid and a second fluid is disclosed. The heat exchanger includes a first header-tank assembly and a second header-tank assembly. The heat exchanger is configured for operation in orientation in which the first header-tank assembly is substantially higher with respect to a ground level than the second header-tank assembly. The heat exchanger also includes a plurality of tubes arranged in a first stack and in a second stack. The stacks are arranged between the header-tank assemblies. The second stack is arranged downstream to the first stack with respect to a configured first fluid flow path. The heat exchanger also includes at least one fin interlaced between two adjacent tubes of each stack. The fin further includes a first section configured to deflect the first fluid substantially obliquely-upwardly.

1 . A heat exchanger for heat exchange between a first fluid and a second fluid, the heat exchanger comprising:
 a first header-tank assembly;   a second header-tank assembly,
 wherein the heat exchanger is configured for operation in an orientation in which the first header-tank assembly is substantially higher with respect to a ground level than the second header-tank assembly; 
   a plurality of tubes arranged in a first stack and in a second stack,
 wherein the stacks are arranged between the first header-tank assembly and the second header-tank assembly, 
 wherein the second stack is arranged downstream to the first stack with respect to a configured first fluid flow path; 
   at least one fin interlaced between two adjacent tubes of each stack, wherein the fin further comprises:
 a first section configured to deflect the first fluid substantially obliquely-upwardly, and a second section configured to deflect the first fluid towards the second header-tank assembly, 
 wherein the second section is arranged downstream to the first section with respect to the intended first fluid flow path, and 
 a third section arranged downstream to the first section and the second section so that the second section is located substantially between the first stack and the second stack. 
   
     
     
         2 . The heat exchanger according to  claim 1 ,
 wherein the third section deflects the first fluid substantially in the same direction as the first section.   
     
     
         3 . The heat exchanger according to  claim 1 ,
 wherein the third section deflects the first fluid in a different direction than the first section.   
     
     
         4 . The heat exchanger according to  claim 1 ,
 wherein the first stack comprises a first thickness measured perpendicularly to a stacking direction and a second stack comprises a second thickness also measured perpendicularly to a stacking direction,   wherein the stacks are arranged between the first header-tank assembly, so that the gap is formed between the stacks.   
     
     
         5 . The heat exchanger according to  claim 4 ,
 wherein the third section at least partially overlaps the second thickness and the first section at least partially overlaps the first thickness.   
     
     
         6 . The heat exchanger according to  claim 4 ,
 further comprising a gap between the first stack and the second stack, wherein the gap is smaller than any of the thickness or.   
     
     
         7 . The heat exchanger according to  claim 6 ,
 wherein the second section at least partially overlaps the gap.   
     
     
         8 . The heat exchanger according to  claim 1 ,
 wherein the first header-tank assembly comprises two fluidly isolated channels for the first fluid, and   wherein the first header-tank assembly further comprises an inlet and an outlet for connecting the heat exchanger into first fluid loop.   
     
     
         9 . The heat exchanger according to  claim 1 ,
 wherein the second header-tank assembly comprises two fluidly isolated channels for the first fluid, and   wherein the second header-tank assembly further comprises an inlet and an outlet for connecting the heat exchanger into first fluid loop.   
     
     
         10 . The heat exchanger according to  claim 1 ,
 wherein the first section comprises at least one first louver aligned at a first louver angle (α1) measured with respect to the intended first fluid flow direction.   
     
     
         11 . The heat exchanger according to  claim 10 ,
 wherein the second section comprises at least one second louver aligned at a second louver angle (α2) measured with respect to the intended first fluid flow direction.   
     
     
         12 . The heat exchanger according to  claim 11 ,
 wherein the second louver angle α2 is equal to (α1)+90 degrees.   
     
     
         13 . The heat exchanger according to  claim 12 ,
 wherein the third section comprises at least one third louver aligned at a third louver angle (α3) measured with respect to the intended first fluid flow direction.   
     
     
         14 . The heat exchanger according to  claim 13 ,
 wherein the third louver angle is substantially equal to the first louver angle.   
     
     
         15 . A motor vehicle comprising a heat exchanger according to  claim 1 .