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US 8,240,427 B2Granted
Sound attenuation systems and methods
AssigneeGeneral Electric Company
InventorsRanjit Kumar Jangili, Richard Loud, Dinesh Venugopal Setty
Life of this patent
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Abstract
Methods and devices for increasing the sound attenuation properties of a noise suppression device are provided. In some embodiments, a sound attenuating conduit has an improved shape that provides increased sound attenuation properties. In other embodiments, the sound attenuating conduits are stacked together, and shaped to increase the air flow cross-section. Still other embodiments provide machinery that includes the improved sound attenuating conduits.
Claims32
A system comprising:
- a sound attenuating conduit comprising hollow sidewalls that define at least one sound attenuating cavity and at least one opening into the at least one sound attenuating cavity, wherein the hollow sidewalls of the sound attenuating conduit define a polygonal cross-section having only three sides or greater than four sides, the sound attenuating conduit comprises a coaxial baffle having a hollow structure that defines at least one sound attenuating cavity and at least one opening into the at least one sound attenuating cavity, and the sound attenuating conduit is configured to be stacked in a honeycomb configuration or matrix of conduits.
A sound attenuating conduit, comprising:
- a fluid path comprising a fluid inlet and a fluid outlet;
- and
- a hollow sidewall comprising a hexagonal inner wall and a hexagonal outer wall extending lengthwise along a longitudinal axis of the fluid path, wherein the inner wall and the outer wall define a sound attenuating cavity, and the inner wall includes openings that acoustically couple the sound attenuating cavity to the fluid path;
- wherein the hexagonal outer wall is configured to enable stacking of the sound attenuating conduit in a honeycomb configuration or matrix of conduits, and the sound attenuating conduit is configured to couple to an intake section or an exhaust section of a gas turbine engine to pass an air flow into the gas turbine engine or an exhaust flow out of the gas turbine engine.
1 more element
A system comprising:
- a sound attenuating conduit configured to attenuate sound along a fluid path, wherein the sound attenuating conduit comprises a hexagonal sidewall that defines a sound attenuating cavity and openings configured to acoustically couple the fluid path to the sound attenuating cavity, the sound attenuating conduit is configured to be stacked in a honeycomb configuration or matrix of conduits, and the sound attenuating conduit comprises a baffle extending lengthwise along a longitudinal axis of the sound attenuating conduit;
- and
- a gas turbine engine having an air intake section or an exhaust section coupled to the sound attenuating conduit having the fluid path, and the fluid path comprises an air intake flow path or an exhaust flow path of the gas turbine engine.
A system, comprising:
- a sound attenuating conduit, comprising:
- a fluid path having a longitudinal axis;
- a hollow wall disposed about the fluid path, wherein the hollow wall has a polygonal cross-section relative to the longitudinal axis, the polygonal cross-section is defined by a polygonal outer wall having at least five or more sides and a polygonal inner wall having at least five or more sides, the hollow wall has a sound attenuating material disposed in a sound attenuating cavity between the polygonal inner and outer walls, and the polygonal inner wall has a plurality of openings from the fluid path into the sound attenuating cavity;
- and
- a baffle disposed lengthwise along a longitudinal axis of the sound attenuating conduit;
- wherein the sound attenuating conduit is configured to attenuate sound along the fluid path, wherein the polygonal outer wall is configured to enable stacking of the sound attenuating conduit in a honeycomb configuration or matrix of conduits.
3 more elements
Dependencies are inferred from the claim text.