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US 10,208,602 B2Granted
Asymmetric diffuser opening for film cooling holes
AssigneeUnited Technologies Corporation
InventorsLane Thornton, Ryan Alan Waite, Peter Balawajder, Benjamin F. Hagan
Life of this patent
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Abstract
A film cooled component may comprise a cooling chamber and a first ligament centered about a first axis. The first ligament may be in fluid communication with the cooling chamber. A first meter may be disposed at an end of the first ligament. A first diffuser may extend from the first meter to a surface of the film cooled component. The first diffuser may comprise a first tapered sidewall oriented at an angle of between 5 degrees to 15 degrees relative to the first axis. The first diffuser may further comprise a first non-tapered sidewall oriented at an angle less than 5 degrees relative to the first axis.
Claims20
A film cooled component, comprising:
- a cooling chamber;
- a first ligament centered about a first axis and having a first inlet opening, centered about the first axis, opening directly into, flush against a first surface of, and in fluid communication with the cooling chamber;
- a first meter disposed at an end of the first ligament;
- a first diffuser extending from the first meter to a second surface of the film cooled component, wherein the first diffuser comprises a first sidewall oriented at a first diffusion angle between 5 degrees and 15 degrees relative to the first axis and a second sidewall oriented at a second diffusion angle less than 5 degrees relative to the first axis, wherein the second diffusion angle is non-zero;
- a second ligament centered about a second axis and having a second inlet opening, centered about the second axis, opening directly into, flush against the first surface of, and in fluid communication with the cooling chamber;
- a second meter disposed at an end of the second ligament;
- and
- a second diffuser extending from the second meter to the second surface of the film cooled component, wherein the second diffuser comprises a third sidewall oriented at a third diffusion angle of between 5 degrees and 15 degrees relative to the second axis and a fourth sidewall oriented at a fourth diffusion angle less than 5 degrees relative to the second axis, wherein the fourth diffusion angle is non-zero,
- wherein the first ligament and the second ligament are separated from each other by a first distance, wherein the first diffuser and the second diffuser are separated from each other by a second distance, wherein the first diffuser comprises a first asymmetry defined by the first diffusion angle and a second asymmetry defined by the second diffusion angle, and wherein the second diffuser comprises a third asymmetry defined by the third diffusion angle and a fourth asymmetry defined by the fourth diffusion angle, and wherein the first sidewall and the third sidewall extend away from each other.
6 more elements
A film cooling system, comprising:
- a cooling chamber;
- a first film cooling hole in fluid communication with the cooling chamber and comprising a first asymmetric diffuser and a first ligament centered about a first axis and having a first inlet opening centered about the first axis, opening directly into, flush against a first surface of, and in fluid communication with the cooling chamber;
- and
- a second film cooling hole disposed adjacent the first film cooling hole in fluid communication with a second inlet opening, centered about a second axis, opening directly into, flush against the first surface of, and in fluid communication with the cooling chamber, the second film cooling hole comprising a second asymmetric diffuser and a second ligament centered about the second axis, wherein the first ligament and the second ligament are separated from each other by a first distance, wherein the first asymmetric diffuser and the second asymmetric diffuser are separated from each other by a second distance, wherein the first asymmetric diffuser comprises a first asymmetry defined by a first diffusion angle and a second asymmetry defined by a second diffusion angle, and wherein the second asymmetric diffuser comprises a third asymmetry defined by a third diffusion angle and a fourth asymmetry defined by a fourth diffusion angle,
- wherein the first diffusion angle is an angle of between 5 degrees and 15 degrees relative to the first axis and the second diffusion angle is a non-zero angle less than 5 degrees relative to the first axis,
- wherein the third diffusion angle is an angle of between 5 degrees and 15 degrees relative to the second axis and the fourth diffusion angle is a non-zero angle less than 5 degrees relative to the second axis,
- wherein the first diffusion angle and the third diffusion angle define respective sidewalls extending away from each other.
4 more elements
A gas turbine engine, comprising:
- a compressor section;
- a combustor aft of the compressor section and in fluid communication with the compressor section;
- and
- a turbine section aft of the combustor and in fluid communication with the combustor, a component of the turbine section comprising:
- a first film cooling hole comprising a first asymmetric diffuser and a first ligament centered about a first axis and having a first inlet opening, centered about the first axis, opening directly into, flush against a first surface of, and in fluid communication with a cooling chamber;
- and
- a second film cooling hole adjacent the first film cooling hole and comprising a second asymmetric diffuser and a second ligament centered about a second axis and having a second inlet opening, centered about the second axis, opening directly into, flush against the first surface of, and in fluid communication with the cooling chamber,
- wherein the first ligament and the second ligament are separated from each other by a first distance, wherein the first asymmetric diffuser and the second asymmetric diffuser are separated from each other by a second distance, wherein the first asymmetric diffuser comprises a first asymmetry defined by a first diffusion angle and a second asymmetry defined by a second diffusion angle, and wherein the second asymmetric diffuser comprises a third asymmetry defined by a third diffusion angle and a fourth asymmetry defined by a fourth diffusion angle,
- wherein the first diffusion angle is an angle of between 5 degrees and 15 degrees relative to the first axis and the second diffusion angle is a non-zero angle less than 5 degrees relative to the first axis,
- wherein the third diffusion angle is an angle of between 5 degrees and 15 degrees relative to the second axis and the fourth diffusion angle is a non-zero angle less than 5 degrees relative to the second axis,
- wherein the first diffusion angle and the third diffusion angle define respective sidewalls extending away from each other.
8 more elements
Dependencies are inferred from the claim text.