Heat exchanger suitable for use as a charge air cooler

Abstract

The invention relates to a component, in particular a heat exchanger, in particular for motor vehicles, having a finned tube block. Preferably, at least one inlet chamber and at least one outlet chamber are provided having walls made of a synthetic resin material possessing a heat- and/or chemical-resistant coating.

What is claimed is:  
     
         1 . A heat transfer device, comprising: 
 at least one component for guiding a heat transfer medium, said component being comprised of a synthetic resin, wherein the synthetic resin component is provided with a surface coating in at least one area.    
     
     
         2 . The device as claimed in  claim 1 , wherein the device comprises a heat exchanger for a motor vehicle, comprising a finned tube block and at least one inlet chamber and at least one outlet chamber for a heat transfer medium, wherein at least one of the inlet chamber and the outlet chamber comprises a synthetic resin wall structure provided with a surface coating in at least one area.  
     
     
         3 . The device as claimed in  claim 1 , wherein the surface coating comprises an oxidation control coating.  
     
     
         4 . The device as claimed in  claim 1 , wherein the synthetic resin comprises a polyphthalamide (PPA), a polyphenylene sulfide (PPS) or a polyamide (PA).  
     
     
         5 . The device as claimed in  claim 4 , wherein the synthetic resin includes at least one reinforcing agent.  
     
     
         6 . The device as claimed in  claim 5 , wherein the reinforcing agent comprises glass fibers and/or carbon fibers.  
     
     
         7 . The device as claimed in  claim 1 , wherein the synthetic resin comprises an amorphous material selected from a polyaryl ether sulfone (PES), a polyether imide (PEI) or a polycarbonate (PC).  
     
     
         8 . The device as claimed in  claim 1 , wherein the surface coating comprises a polysiloxane, a polyester material or a partly crystalline material selected from a polyaryl ether ketone (PEEK), PPA, PA6T or a liquid-crystalline polymer (LCP).  
     
     
         9 . The device as claimed in  claim 1 , wherein the surface coating has a coating thickness of from about 0.001 mm to about 0.1 mm.  
     
     
         10 . The device as claimed in  claim 9 , wherein the surface coating has a coating thickness of from about 0.01 mm to about 0.1 mm.  
     
     
         11 . The device as claimed in  claim 2 , wherein the inlet chamber and the outlet chamber have a wall thickness of from approximately 1.0 mm to 4.5 mm.  
     
     
         12 . The device as claimed in  claim 2 , wherein the surface coating is present on the inwardly-oriented surface of the inlet chamber and/or of the outlet chamber.  
     
     
         13 . The device as claimed in  claim 2 , wherein the surface coating is present on the inwardly-oriented surface and the outwardly-oriented surface of the inlet chamber and/or of the outlet chamber.  
     
     
         14 . A process for applying a surface coating to the inlet chamber and/or the outlet chamber of a heat exchanger as claimed in  claim 2 , comprising applying the surface coating by a spray-coating process or a dip-coating process.  
     
     
         15 . A charge air cooler comprising a heat exchanger as claimed in  claim 1 , wherein the coated area comprises a portion in contact with heated charge air.  
     
     
         16 . A coolant cooler comprising a heat exchanger as claimed in  claim 1 , wherein the coated area comprises a portion in contact with hot engine coolant.  
     
     
         17 . A motor vehicle, comprising an engine and at least one heat exchange device, wherein the heat exchange device comprises a device as claimed in  claim 1.