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US 6,805,533 B2Granted
Tolerant internally-cooled fluid guide component
AssigneeSiemens Westinghouse Power Corporation
InventorCheryl A. Schopf
Life of this patent
Estimating the term…
Abstract
A cooled fluid flow component for a combustion engine which employs internal impingement and exterior surface film cooling is disclosed. The fluid flow component has improved tolerance to assembly and manufacturing variations. The fluid flow component includes at least one interior cavity having an associated impingement sleeve. An impingement annulus surrounding the impingement sleeve is divided into more than one region, with each region forced to have a pressure equal, pressure, with the pressure induced being sufficient to provide adequate backflow margin. The external cooling holes are shaped to address possible overflow tendencies, and the impingement holes are adapted to reduce or eliminate possible losses of impingement cooling effectiveness.
Claims16
An internally-cooled fluid flow component for a combustion engine comprising:
- an airfoil-shaped body member including a loading edge region, a suction side region, and a pressure side region;
- a hollow portion disposed within said body member;
- an impingement sleeve disposed within said hollow portion, said impingement sleeve being spaced apart from an inner surface of said hollow portion, thereby forming an impingement annulus between said impingement sleeve and said inner surface, said impingement annulus substantially surrounding said impingement sleeve,
- a flow channel disposed within said impingement sleeve, said flow channel being adapted for fluid communication with a source of cooling fluid;
- first and second partition elements each spanning said impingement annulus, said partition elements cooperatively dividing said impingement annulus into a first impingement region and a second impingement region said first region being substantially within leading edge, and said second impingement region lying at least partially within both of said suction and pressure side regions;
- a first group of impingement ports disposed within said impingement sleeve and in fluid communication with said first impingement region, said first group of impingement ports defining a first total passthrough area;
- a second group of impingement ports disposed within said impingement sleeve and in fluid communication with said second impingement region, said second group of impingement ports being adapted to deliver cooling fluid to both of said suction and pressure side regions with a substantially equal amount of pressure and defining a second total passthrough area, said first and second total passthrough areas being substantially equal;
- a first group of surface cooling parts disposed substantially within said leading edge region and in fluid communication with said first impingement region
- a second group of surface cooling ports disposed substantially outside of said leading edge region and in fluid communication with said second impingement region,
- whereby said first and second groups of impingement ports are adapted to produce substantially equal pressure within said first and second impingement region when fluid flows through said flow channel and into said impingement regions.
7 more elements
An internally-cooled fluid flow component for a combustion engine comprising:
- a hollow airfoil having a leading edge region defined by a pair of partition elements, a first side region, a second side region, and including a first cooling, port in said leading edge region and a second cooling port outside of said leading edge region;
- a first set of impingement ports having a first total area and being in fluid communication with a first impingement region disposed within said leading edge region;
- a second set of impingement ports having a second total area and being in fluid communication with a second impingement region at least partially within both of said suction and sure side regions, said second set of ports being adapted to deliver cooling fluid to both of said suction and pressure side regions with a substantially equal amount of pressure and, wherein said first and second total areas are substantially equal,
- whereby said first and second sets of impingement holes are adapted to provide fluid at a equal pressure to each of said impingement regions.
1 more element
An internally-cooled fluid flow component for a combustion engine comprising:
- an airfoil-shaped body member including a leading edge region, a first side region, and a second side region;
- a hollow portion disposed within said body member;
- an impingement sleeve disposed within said hollow portion, said impingement sleeve being spaced apart from an inner surface of said hollow portion, thereby forming an impingement annulus between said impingement sleeve and said inner surface, said impingement annulus substantially surrounding said impingement sleeve;
- a flow channel disposed within said impingement sleeve, said flow channel being adapted for fluid communication with a source of cooling fluid;
- said impingement annulus including a first impingement region at least partially aligned with said first side region and a second impingement region at least partially aligned with said second side region;
- a first group of impingement ports disposed within said impingement sleeve and in fluid communication with said first impingement region, said first group of impingement ports defining a first total passthrough area;
- a second group of impingement ports disposed within said impingement sleeve and in fluid communication with said second impingement region, said second group of impingement ports defining a second total passthrough area, said first and second total passthrough areas being substantially equal, and said first and second groups of impingement ports being adapted to deliver cooling fluid to both of said suction and pressure side regions with a substantially equal amount of pressure;
- a first group of surface cooling ports disposed substantially within a first exterior cooling region and in fluid communication with said first impingement region;
- and
- a second group of surface cooing ports disposed substantially a second exterior cooling region and in fluid communication with said second impingement region,
- whereby said first and second groups of impingement ports are adapted to produce substantially equal pressure within said first and second impingement region when fluid flows through said flow channel and into said impingement regions.
8 more elements
Dependencies are inferred from the claim text.