Wall part acted upon by an impingement flow

Abstract

An impingement flow for wall parts ( 3 ) is distinguished by a plurality of impingement orifices ( 2 ) which are arranged areally in a plane or curved carrier ( 1 ), the carrier being arranged at a distance from the wall part, and the impingement surface, to be cooled, of the wall part ( 3 ) being designed as a relief. That side of the wall part ( 3 ) which faces the impingement jet is provided with a number of troughs ( 4 ) arranged next to one another, at least one impingement jet per trough ( 4 ) being provided. That side of the wall part ( 3 ) which is remote from the impingement jet is of at least roughly plane design. The troughs ( 4 ) have the shape of a circle segment or of a base area related thereto.

What is claimed as new and desired to be secured by Letters Patent of the United States is:  
     
         1 . An impingement flow for a wall part ( 3 ), in which a plurality of impingement orifices ( 2 ) are arranged areally in a plane or curved carrier ( 1 ), the carrier being arranged at a distance from the wall part, and the impingement area, to be cooled or heated, of the wall part ( 3 ) being designed as a relief, wherein 
 that side of the wall part ( 3 ) which faces the impingement jet is provided with a number of troughs ( 4 ) arranged next to one another, at least one impingement jet per trough ( 4 ) being provided, which impingement jet strikes the trough base at least approximately perpendicularly, and    that side of the wall part ( 3 ) which is remote from the impingement jet is of at least roughly plane design.    
     
     
         2 . The impingement flow as claimed in  claim 1 , wherein the trough ( 4 ) has the shape of a circle segment or of a base area related thereto.  
     
     
         3 . The impingement flow as claimed in  claim 2 , wherein the trough is of rotationally symmetrical or longitudially extended design.  
     
     
         4 . The impingement flow as claimed in  claim 1 , wherein the wall part ( 3 ) is connected indirectly or directly to the carrier ( 1 ) via webs ( 7 ) formed between the troughs ( 4 ).  
     
     
         5 . The impingement flow as claimed in  claim 1 , wherein the wall part ( 3 ) to be cooled or heated is made together with the troughs ( 4 ) as a casting.  
     
     
         6 . The impingement flow as claimed in  claim 1 , wherein the impingement orifices ( 2 ) form the inlet ( 2 ) of impingement tubes ( 21 ), the mouth ( 23 ) of which is directed toward the wall part ( 3 ) to be cooled or heated.