Heat exchanger, such as a charge air cooler

Abstract

A heat exchanger, such as a water cooled charge air cooler, is disclosed for cooling of charge air with the aid of coolant. In at least one embodiment, the heat exchanger includes charge air tubes and coolant turbulators made of corrugated sheet metal interposed between the air tubes. The turbulators define coolant channels and including at least one turbulating device provided therein. According to at least one embodiment of the invention, at least one channel includes at least one continuously shaped side wall which is non-apertured along its entire length and thus promotes coolant flow along the channel by inhibiting cross flow of coolant to a neighbouring channel.

1 . Heat exchanger for cooling of charge air with the aid of coolant, said heat exchanger comprising:
 charge air tubes; and   coolant turbulators made of corrugated sheet metal interposed between said air tubes, the turbulators defining coolant channels and including turbulating devices provided therein, at least one of the coolant channels including at least one continuously shaped side wall which is non-apertured along its entire length and thus promotes coolant flow along said at least one channel by inhibiting cross flow of coolant to a neighbouring one of the coolant channels.   
     
     
         2 . Heat exchanger according to  claim 1 , wherein at least three of the coolant channels are closed channels, including continuously shaped side walls on both sides, and are regularly spaced across the turbulator. 
     
     
         3 . Heat exchanger according to  claim 1 , wherein at least every tenth channel of the turbulator is a closed channel, including continuously shaped side walls on both sides. 
     
     
         4 . Heat exchanger according to  claim 1 , wherein all of the coolant channels are closed channels, including continuously shaped side walls on both sides, which are non-apertured, and including top and bottom walls which have turbulence creating inverted dimples protruding into the channels along the entire length of these with a certain spacing. 
     
     
         5 . Heat exchanger according to  claim 4 , wherein the closed channels are meander shaped due to smoothly winding side walls. 
     
     
         6 . Heat exchanger according to  claim 5 , wherein an inverted dimple is provided on the top and bottom walls at each meander turn of the closed channels. 
     
     
         7 . Heat exchanger according to  claim 1 , wherein all the coolant channels include a first continuously shaped side wall, which is non-apertured, and a second opposing side wall, which is provided with turbulence creating apertures. 
     
     
         8 . Heat exchanger according to  claim 7 , wherein the turbulence creating apertures form interruptions in top and bottom walls of the channels. 
     
     
         9 . Heat exchanger according to  claim 1 , wherein the heat exchanger is a water cooled charge air cooler for cooling of charge air with the aid of coolant.