# US 2012/0073788 A1 · Method and system for synthetic jet cooling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2012/0073788 A1 - Document ID: US20120073788A1 - Status: Published application - Kind: A1 - Application number: 12/889,804 - Filed: 2010-09-24 - Published: 2012-03-29 - Earliest claimed: 2010-09-24 - Inventors: John Jay Streyle - Web page: https://patentgrep.com/patent/US20120073788A1 ## CPC - H05K 7/20172: {Fan mounting or fan specifications} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A method and system for cooling a component are provided. The synthetic jet cooling system includes a plurality of synthetic jet assemblies configured to be positioned adjacent to a component that generates excess heat. Each of the plurality of synthetic jet assemblies includes a driver configured to excite a respective one of the plurality of synthetic jet assemblies at a varying frequency. ## Claims ### Claim 1 A synthetic jet cooling system comprising a plurality of synthetic jet assemblies configured to be positioned adjacent a component that generates excess heat, each of the plurality of synthetic jet assemblies comprising a driver configured to excite a respective one of the plurality of synthetic jet assemblies at a varying frequency. ### Claim 2 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein each of the plurality of synthetic jet assemblies includes at least one synthetic jet ejector comprising a piezoelectric actuator, said actuator configured to vibrate such that a flow of fluid is generated. ### Claim 3 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies randomly. ### Claim 4 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies pseudo-randomly. ### Claim 5 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies linearly ### Claim 6 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies between a first limit and second limit, the first limit being greater than the second limit. ### Claim 7 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein each of the plurality of synthetic jet assemblies includes at least one synthetic jet ejector comprising a jet port, said jet port aligned at least one of perpendicularly, parallelly, and obliquely with a surface of the component. ### Claim 8 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said component comprises a synthetic jet assembly housing formed integrally with the surface of the component. ### Claim 9 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said synthetic jet assembly comprises a plurality of synthetic jet ejectors enclosed in a single housing. ### Claim 10 (depends on 1) A synthetic jet cooling system in accordance with claim 1, wherein said synthetic jet assembly comprises a single housing couplable to the surface of the component. ### Claim 11 A method of cooling a component, said method comprising: positioning a plurality of synthetic jet assemblies adjacent a component that generates excess heat; and separately driving each of the plurality of synthetic jet assemblies at a frequency that varies between a first frequency limit and a second frequency limit. ### Claim 12 (depends on 11) A method in accordance with claim 11 wherein separately driving each of the plurality of synthetic jet assemblies comprises separately driving each of the plurality of synthetic jet assemblies at a frequency that varies over time. ### Claim 13 (depends on 11) A method in accordance with claim 11 wherein separately driving each of the plurality of synthetic jet assemblies comprises separately driving each of the plurality of synthetic jet assemblies at a frequency that varies randomly. ### Claim 14 (depends on 11) A method in accordance with claim 11 wherein separately driving each of the plurality of synthetic jet assemblies comprises separately driving each of the plurality of synthetic jet assemblies at a frequency that varies pseudo-randomly such that a first audio noise generated by each of the plurality of synthetic jet assemblies is combined to a second audio noise, the second audio noise being perceived by a user as less annoying then the first audio noise. ### Claim 15 (depends on 11) A method in accordance with claim 11 wherein separately driving each of the plurality of synthetic jet assemblies comprises: communicatively coupling a piezoelectric driver to a respective one of the plurality of synthetic jet assemblies; generating an electrical signal in each of the piezoelectric drivers that is different from the electrical signals generated in the other piezoelectric drivers; and transmitting the generated electrical signals to the respective synthetic jet assemblies such that each of the plurality of synthetic jet assemblies is excited at a different frequency. ### Claim 16 An electronic component system comprising: a component enclosure comprising a plurality of sidewalls defining a volume; a heat generating component positioned within the volume; and a synthetic jet cooling system positioned adjacent the component enclosure, the synthetic jet cooling system comprising a plurality of synthetic jet assemblies communicatively coupled to a respective driver configured to excite the synthetic jet assembly at a varying frequency. ### Claim 17 (depends on 16) A synthetic jet cooling system in accordance with claim 16, wherein each of the plurality of synthetic jet assemblies includes at least one synthetic jet ejector comprising a piezoelectric actuator, said actuator configured to vibrate such that a flow of fluid is generated. ### Claim 18 (depends on 16) A synthetic jet cooling system in accordance with claim 16, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies randomly. ### Claim 19 (depends on 16) A synthetic jet cooling system in accordance with claim 16, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies pseudo-randomly. ### Claim 20 (depends on 16) A synthetic jet cooling system in accordance with claim 16, wherein said driver is configured to excite a respective one of the plurality of synthetic jet assemblies at a frequency that varies between a first limit and second limit, the first limit being greater than the second limit.