Angled impingement inserts with cooling features
An engine component assembly is provided with an insert having cooling features. The engine component comprises a cooled engine component surface having a flow path on one side thereof and a second component adjacent to the first component. The second component, for example an insert, may have a plurality of openings forming an array wherein the openings extend through the second component at a non-orthogonal angle to the surface of the second component. The second engine component has a plurality of discrete cooling features disposed on a surface facing the first component and near the plurality of cooling openings.
1. An engine component assembly for impingement cooling, comprising:
an engine component having a cooled surface;
said engine component having a flow path on one side of said cooled surface;
an insert disposed adjacent to said engine component between said flow path and said engine component, said insert having a plurality of openings forming an array through said insert, said cooling flow path passing through said plurality of openings to cool said cooled surface;
said insert having a surface facing said cooled surface of said engine component;
a plurality of discrete cooling features extending from said insert surface into a gap between and toward said cooled surface of said engine component and defining an array, wherein a forward wall of at least one cooling feature of the plurality of cooling features has a semicircular cross-section; and,
said openings extending through said insert at a non-orthogonal angle to said insert surface; and,
wherein the array comprises a staggered array, the staggered array comprising a first row and a second row, wherein the second row is offset by a distance in a first direction from the first row.
2. The engine component assembly of claim 1 , said plurality of discrete cooling features having a polygonal shape in side view, wherein the staggered array is staggered in both an X and a Y direction.
3. The engine component assembly of claim 2 , wherein at least one cooling feature of said plurality of discrete cooling features being one of triangular, square or rectangular.
4. An engine component assembly for impingement cooling, comprising:
an engine component having a cooled surface;
said engine component having a flow path on one side of said cooled surface;
an insert disposed adjacent to said engine component between said flow path and said engine component, said insert having a plurality of openings forming an array through said insert, said cooling flow path passing through said plurality of openings to cool said cooled surface;
said insert having a surface facing said cooled surface of said engine component;
a plurality of discrete cooling features extending from said insert surface into a gap between and toward said cooled surface of said engine component and defining an array, wherein a forward wall of at least one cooling feature of the plurality of cooling features has a semicircular cross-section; and,
said openings extending through said insert at a non-orthogonal angle to said insert surface; and
each of said array of said cooling features being offset from at least one of said opening in said insert wherein an axis of said opening intersects said cooled surface, and wherein at least one cooling feature of said cooling features is generally diamond shaped.
5. The engine component assembly of claim 4 , said offset being in a second direction, wherein at least one cooling feature of said cooling features has a cross-sectional area that forms an equilateral triangle.