Component and a method of cooling a component

Abstract

A component and method of cooling a component are provided. The component includes a leading edge, a trailing edge, at least one cavity between the leading edge and the trailing edge, at least one diffusion member adjacent to the cavity. The diffusion member includes an inlet adjacent to the cavity, a metering zone adjacent to the inlet, a diffusion zone adjacent to the metering zone, and an outlet adjacent the diffusion zone and adjacent the trailing edge. The diffusion member provides up to about 70% reduction in flow and uniform cooling of the trailing edge of the component.

What is claimed is: 
     
         1 . A component comprising:
 a leading edge;   a trailing edge;   at least one cavity between the leading edge and the trailing edge;   at least one diffusion member adjacent to the cavity, the diffusion member including:
 an inlet adjacent to the cavity; 
 a metering zone adjacent to the inlet; 
 a diffusion zone adjacent to the metering zone; and 
 an outlet adjacent the diffusion zone and adjacent the trailing edge; 
   wherein the diffusion member provides up to about 70% reduction in flow and uniform cooling of the trailing edge of the component.   
     
     
         2 . The component of  claim 1 , wherein the component is a ceramic matrix composite. 
     
     
         3 . The component of  claim 1 , wherein the component is a superalloy metal. 
     
     
         4 . The component of  claim 1 , wherein the component is a blade, a nozzle, or a shroud. 
     
     
         5 . The component of  claim 1 , wherein the diffusion member expands the cross section area from the inlet to the outlet. 
     
     
         6 . The component of  claim 1 , wherein the diffusion zone increases through-flow area from about 150% to about 500% between the metering zone and the outlet. 
     
     
         7 . The component of  claim 1 , wherein the outlet has an open-to-solid ratio of about 25% to about 100%. 
     
     
         8 . A method of cooling a component comprising:
 providing the component having:
 a leading edge; 
 a trailing edge; 
 at least one cavity between the leading edge and the trailing edge; 
 at least one diffusion member adjacent to the at least one cavity, the diffusion member including:
 an inlet adjacent to the cavity; 
 a metering zone adjacent to the inlet; 
 a diffusion zone adjacent to the metering zone; and 
 an outlet adjacent the diffusion zone and adjacent the trailing edge; 
 
 wherein the diffusion member provides up to about 70% reduction in flow and uniform cooling of the trailing edge of the component; and 
   circulating cooling air in the at least one cavity through the diffusion member, wherein heat from the component is removed through the diffusion zone.   
     
     
         9 . The method of  claim 8 , wherein the component is a ceramic matrix composite. 
     
     
         10 . The method of  claim 8 , wherein the component is a superalloy metal. 
     
     
         11 . The method of  claim 8 , wherein the component is a blade, a nozzle, or a shroud. 
     
     
         12 . The method of  claim 8 , wherein the diffusion member expands the cross section area from the inlet to the outlet. 
     
     
         13 . The method of  claim 8 , wherein the diffusion zone increases through-flow area from about 150% to about 500% between the metering zone and the outlet. 
     
     
         14 . The method of  claim 8 , wherein the outlet has an open-to-solid ratio of about 25% to about 100%.