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US 8,752,775 B2Granted
Method and apparatus for reducing acoustic noise in a synthetic jet
AssigneeGeneral Electric Company
InventorsMehmet Arik, Stanton Earl Weaver, Charles Erklin Seeley, Yogen Vishwas Utturkar
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Abstract
A synthetic jet includes a first backer structure, one and only one actuator, a wall member coupled to and positioned between the first backer structure and the one and only one actuator to form a cavity, and wherein the wall member has an orifice formed therethrough, and wherein the orifice fluidically couples the cavity to an environment external to the cavity.
Claims20
A synthetic jet comprising:
- a first backer structure;
- an actuator attached to the first backer structure;
- a wall member coupled to the first backer structure;
- and
- a second backer structure coupled to the wall opposite the first backer structure such that a cavity is formed by the second backer structure, the wall member, and the first backer structure;
- wherein the wall member has an orifice formed therethrough, and wherein the orifice fluidically couples the cavity to an environment external to the cavity such that a gas passes in and out of the cavity through the orifice when an alternating voltage is applied to the actuator.
3 more elements
A method of fabricating a synthetic jet comprising:
- attaching a first plate to a wall;
- coupling a micromechanical device to the first plate to form a composite unit;
- forming a volume using at least a surface of the wall and a surface of the first plate;
- and
- penetrating an orifice through the wall to fluidically couple the volume to a gas outside the volume, such that a gas passes to and from the volume through the orifice when an alternating voltage is applied to the micromechanicals device.
2 more elements
A system for cooling a device comprising:
- a synthetic jet comprising:
- a first plate;
- one and only one actuator coupled to the first plate;
- a second plate;
- a wall member coupled to and positioned between the first and second plates to form a cavity;
- and
- wherein the wall has an orifice penetrating therethrough that fluidically couples the cavity to an environment external to the cavity;
- and
- a control system configured to drive the actuator at an electrical frequency below 100 Hz in a first operating mode such that a jet expels from the orifice.
6 more elements
Dependencies are inferred from the claim text.