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 and a first actuator coupled to the first backer structure to form a first composite unit. The synthetic jet also includes a second backer structure, and a second actuator coupled to the second backer structure to form a second composite unit. A wall member is coupled to and positioned between the first and second backer structures to form a cavity. The first composite unit has an orifice formed therethrough and the orifice is fluidically coupled to the cavity and fluidically coupled to an environment external to the cavity.
Claims13
A method of fabricating a synthetic jet comprising:
- attaching two plates to a wall to encircle a volume;
- coupling a first micromechanical device to one of the two plates to form a first unitary member;
- coupling a second micromechanical device to the other of the two plates to form a second unitary member;
- penetrating an orifice through both the first micromechanical device and the plate coupled thereto to fluidically couple the volume to a gas outside the volume;
- and
- coupling a first controller to the first unitary member, wherein the first controller is configured to operate the first unitary member at a first frequency and to operate the second unitary member at a second frequency that is different from the first frequency.
A system for cooling a device comprising:
- a synthetic jet comprising:
- a first plate;
- a first actuator coupled to the first plate;
- a second plate;
- a second actuator coupled to the second plate;
- a wall member coupled to and positioned between the first and second plates to form a cavity;
- and
- wherein the first plate and the first actuator have an orifice penetrating therethrough, the orifice fluidically coupled to the cavity and fluidically coupled to an environment external to the cavity;
- and
- at least one control system configured to drive the first and second actuators at electrical frequencies that are different from one another such that a jet expels from the orifice.
Dependencies are inferred from the claim text.