Heat exchanger arrangement

Abstract

A heat exchanger arrangement for charge air cooling having a first heat exchanger and a second heat exchanger, through which a first fluid requiring cooling flows in such a way that the first heat exchanger is located ahead of the second heat exchanger in the flow direction of the first fluid. A first coolant flows through the first heat exchanger and a second coolant flows through the second heat exchanger in such a manner that the first heat exchanger cools the first fluid to a first temperature and the second heat exchanger cools the first fluid from the first temperature to a second temperature that is lower than the first temperature, wherein the first heat exchanger and the second heat exchanger can be formed as one structural unit.

What is claimed is: 
     
         1 . A heat exchanger arrangement for charge air cooling, the arrangement comprising:
 a first heat exchanger; and   a second heat exchanger,   wherein the first heat exchanger and the second heat exchanger are configured such that a first fluid requiring cooling flows in such a way that the first heat exchanger is located ahead of the second heat exchanger in a flow direction of the first fluid,   wherein a first coolant flows through the first heat exchanger and a second coolant flows through the second heat exchanger such that the first heat exchanger cools the first fluid to a first temperature and the second heat exchanger cools the first fluid from the first temperature to a second temperature that is lower than the first temperature, and   wherein the first heat exchanger and the second heat exchanger are implemented as one structural unit.   
     
     
         2 . The heat exchanger arrangement according to  claim 1 , wherein the first heat exchanger has an inlet box and an outlet box for the first fluid and a heat exchanger core located therebetween, and wherein the second heat exchanger is located in the outlet box of the first heat exchanger or is located after the outlet box of the first heat exchanger. 
     
     
         3 . The heat exchanger arrangement according to  claim 1 , wherein the second heat exchanger has an inlet box and an outlet box for the first fluid and a heat exchanger core located therebetween, and wherein the first heat exchanger is located in the inlet box of the second heat exchanger or is located ahead of the inlet box of the second heat exchanger. 
     
     
         4 . The heat exchanger arrangement according to  claim 1 , wherein the first heat exchanger has an inlet box and a first heat exchanger core and the second heat exchanger has a second heat exchanger core and an outlet box for the first fluid, wherein the two heat exchanger cores are accommodated in a common housing or each have a separate housing or are accommodated in one housing and/or are connected to one another via a connecting element. 
     
     
         5 . The heat exchanger arrangement according to  claim 1 , wherein the first and/or the second heat exchanger core is a shell and tube heat exchanger core with a bundle of tubes through which the first fluid is adapted to flow, ends of each of the tubes being accommodated in openings of a tube base, and wherein the first or second coolant can flow around the tubes. 
     
     
         6 . The heat exchanger arrangement according to  claim 5 , wherein the inlet box of the second heat exchanger and/or the outlet box of the first heat exchanger has an opening in which the first or second heat exchanger is placed. 
     
     
         7 . The heat exchanger arrangement according to  claim 1 , wherein the first and/or the second heat exchanger core is a shell and tube heat exchanger core or plate heat exchanger core with a bundle or stack of tubes or plates, wherein around the tubes or plates the first fluid is adapted flow, and wherein the first or second coolant is adapted to flow through the tubes or plates. 
     
     
         8 . The heat exchanger arrangement according to  claim 7 , wherein the inlet box of the second heat exchanger and/or the outlet box of the first heat exchanger has an opening in which the first or the second heat exchanger is placed. 
     
     
         9 . The heat exchanger arrangement according to  claim 1 , wherein the heat exchanger placed in the opening has, on one side, a header box that projects at least partially out of the opening and has at least one connection for a coolant. 
     
     
         10 . The heat exchanger arrangement according to  claim 1 , wherein the outlet box of the first or of the second heat exchanger is a manifold of the cylinder head or is connectable with the manifold.