# US 9,039,350 B2 · Impingement cooling system for use with contoured surfaces > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,350 B2 - Document ID: US9039350B2 - Status: Granted - Kind: B2 - Application number: 13/345,779 - Filed: 2012-01-09 - Published: 2013-07-11 - Granted: 2015-05-26 - Earliest claimed: 2012-01-09 - Assignees: General Electric Company - Applicants: Aaron Gregory Winn - Inventors: Aaron Gregory Winn - Web page: https://patentgrep.com/patent/US9039350B2 ## CPC - F01D 5/186: {Film cooling (F01D5/187 takes precedence)} - F01D 5/187: {Convection cooling} - F01D 9/065: {Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids (see also F01D25/16, F01D25/24 and F01D25/26)} - F01D 25/08: Cooling (of machines or engines in general F01P); Heating; Heat-insulation (of blade-carrying members, of blades F01D5/00) - F05D 2240/81: Cooled platforms - F05D 2260/201: by impingement of a fluid - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract The present application provides an impingement cooling system for use with a contoured surface. The impingement cooling system may include an impingement plenum and an impingement plate with a linear shape facing the contoured surface. The impingement surface may include a number of projected area thereon with a number of impingement holes having varying sizes and varying spacings. ## Claims ### Claim 1 An impingement cooling system for use with a non-planar contoured surface of gas turbine with multiple irregular depressions and projections, comprising: a nozzle with an impingement plenum in communication with a cooling flow in a cooling conduit, the cooling flow flowing through the impingement plenum in a first direction; an impingement plate facing the contoured surface; the impingement plate comprising a substantially flat shape; a cover plate positioned substantially parallel to the impingement plate, wherein the impingement plenum comprises a cavity defined between the impingement plate and the cover plate, such that the cooling flow impacts the cover plate and flows through the impingement plate in a second direction; the impingement plate comprising a plurality of projected areas thereon, the projected areas corresponding to the multiple irregular depression and projections of the contoured surface; wherein each of the plurality of projected areas comprises a plurality of impingement holes with varying sizes and varying spacings between the impingement holes for each of the plurality of projected areas. ### Claim 2 (depends on 1) The impingement cooling system of claim 1, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a second area with impingement holes of a second size. ### Claim 3 (depends on 1) The impingement cooling system of claim 1, wherein the plurality of projected areas comprises a first area with impingement holes of a first spacing and a second area with impingement holes of a second spacing. ### Claim 4 (depends on 1) The impingement cooling system of claim 1, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a first spacing and a second area with impingement holes of a second size and a second spacing. ### Claim 5 (depends on 1) The impingement cooling system of claim 1, wherein the multiple projections of the contoured surface comprises a plurality of projections with tips positioned at a plurality of distances from the impingement plate. ### Claim 6 (depends on 5) The impingement cooling system of claim 5, wherein the size and the spacing of the plurality of impingement holes in each of the plurality of projected areas varies with the distance to an opposed contoured area. ### Claim 7 (depends on 1) The impingement cooling system of claim 1, wherein the impingement plate maintains the contoured surface with substantially constant heat transfer coefficients thereacross. ### Claim 8 A turbine, comprising: a turbine nozzle; an impingement cooling system; the impingement cooling system comprising a plurality of impingement holes with a plurality of sizes and spacings between the plurality of impingement holes, and an impingement plenum with an impingement plate with the plurality of impingement holes therein; and a turbine component positioned about the impingement cooling system; the turbine component comprising a contoured surface with multiple irregular depression and projections, wherein the plurality of impingement holes of the impingement cooling system correspond to the multiple irregular depressions and projections of the contoured surface. ### Claim 9 (depends on 8) The turbine of claim 8, wherein the impingement plate comprises a substantially flat shape. ### Claim 10 (depends on 8) The turbine of claim 8, wherein the impingement plate comprises a grid with a plurality of projected areas. ### Claim 11 (depends on 10) The turbine of claim 10, wherein the plurality of projected areas comprises the plurality of impingement holes therein. ### Claim 12 (depends on 10) The turbine of claim 10, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a second area with impingement holes of a second size. ### Claim 13 (depends on 10) The turbine of claim 10, wherein the plurality of projected area comprises a first area with impingement holes of a first spacing and a second area with impingement holes of a second spacing. ### Claim 14 (depends on 10) The turbine of claim 10, wherein the plurality of projected areas comprises a first area with impingement holes of a first size and a first spacing and a second area with impingement holes of a second size and a second spacing. ### Claim 15 (depends on 10) The turbine of claim 10, wherein the multiple projections of the contoured surface comprises a plurality of projections with tips positioned at a plurality of distances from the impingement plate. ### Claim 16 (depends on 8) The turbine of claim 8, wherein the impingement cooling system maintains the contoured surface with substantially constant heat transfer coefficients thereacross. ### Claim 17 A turbine, comprising: a turbine nozzle; an impingement cooling system; the impingement cooling system comprising a linear impingement plate with a plurality of impingement holes with a plurality of sizes and spacings between the plurality of impingement holes, and an impingement plenum with an impingement plate with the plurality of impingement holes therein; and a turbine component positioned about the impingement cooling system; the turbine component comprising a contoured surface such that the impingement cooling system maintains the contoured surface with substantially constant heat transfer coefficients thereacross, wherein the contoured surface comprises multiple irregular depressions and projections, and the plurality of impingement holes of the impingement cooling system correspond to the multiple irregular depressions and projections of the contoured surface. ### Claim 18 (depends on 1) The impingement cooling system of claim 1, wherein the multiple depressions of the contoured surface comprises a plurality of depressions with troughs positioned at a plurality of distances from the impingement plate; and the plurality of impingement holes are positioned such that cooling flow flowing through the impingement holes impacts the contoured surface about the troughs. ### Claim 19 (depends on 8) The turbine of claim 8, wherein the multiple depressions of the contoured surface comprises a plurality of depressions with troughs positioned at a plurality of distances from the impingement plate; and the plurality of impingement holes are positioned such that cooling flow flowing through the impingement holes impacts the contoured surface about the troughs. ### Claim 20 (depends on 17) The turbine of claim 17, wherein the multiple depressions of the contoured surface comprises a plurality of depressions with troughs positioned at a plurality of distances from the impingement plate; and the plurality of impingement holes are positioned such that cooling flow flowing through the impingement holes impacts the contoured surface about the troughs.