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US 7,896,126 B1Granted
Methods and apparatus for sound suppression
AssigneeRaytheon Company
InventorsRobert C. Haberman, Robert J. Barile
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for providing a sound suppressor device including a first plate, a second plate in opposition to the first plate, and a connector between the first and second plates such that the first plate, the second plate, and the connector define a sealed cavity containing a gas at a pressure, wherein the device has a resonant frequency selected to vibrate out-of-phase with respect to a noise source for suppressing noise from the noise source while the noise source and the device are immersed in a liquid.
Claims15
A system, comprising:
- a mechanism having a frequency at which noise is generated;
- and
- a sound suppressor device immersed in a first liquid located a predetermined distance from the mechanism to suppress the noise from the mechanism, the sound suppressor device comprising:
- a first plate;
- a second plate in opposition to the first plate;
- a connector between the first and second plates;
- a gas such that the first plate, the second plate, and connector define a sealed cavity containing gas at a pressure;
- and
- a resonant frequency defined by the first plate, the second plate, the connector, the first liquid, and the gas, the resonant frequency corresponding to the frequency of noise generated by the mechanism, wherein the first and second plates vibrate out-of-phase with respect to the mechanism noise frequency to suppress noise from the mechanism.
6 more elements
A method, comprising:
- identifying a noise source;
- identifying a frequency of noise generated by the noise source;
- immersing a sound suppressor device in a first liquid to suppress the noise from the noise source, wherein the sound suppressor device comprises:
- a first plate;
- a second plate in opposition to the first plate;
- a connector between the first and second plates;
- and
- a gas such that the first plate, the second plate, and connector define a sealed cavity containing gas at a pressure;
- selecting the first and second plates, the connector, the gas, and the pressure to define a resonant frequency corresponding to the frequency of noise generated by the noise source, wherein the first and second plates vibrate out-of-phase with respect to the noise frequency to suppress noise from the noise source;
- and
- locating the sound suppressor device at a predetermined distance from the noise source to suppress the noise generated by the noise source.
8 more elements
A vessel, comprising:
- a pump for pumping a first liquid, the pump having a frequency at which noise is generated;
- a sound suppressor device immersed in the first liquid located at a predetermined distance to suppress the noise from the pump, the sound suppressor device comprising:
- a first plate;
- a second plate in opposition to the first plate;
- a connector between the first and second plates;
- and
- a gas such that the first plate, the second plate, and connector define a sealed cavity containing gas at a pressure;
- and
- a resonant frequency defined by the first plate, the second plate, the connector, the first liquid and the gas, the resonant frequency corresponding to the frequency of noise generated by the pump, wherein the first and second plates vibrate out-of-phase with respect to the pump noise frequency to suppress the pump noise.
6 more elements
Dependencies are inferred from the claim text.