Jay A Hammer

US Patent:

7017351, Mar 28, 2006

Filed:

Nov 21, 2003

Appl. No.:

10/717604

Inventors:

Zhili Hao - Marietta GA, US
Mark Fowler - Madison AL, US
Jay A. Hammer - Huntsville AL, US
Michael Whitley - Madison AL, US
David R. Brown - Meridianville AL, US

Assignee:

Mems Optical, Inc. - Huntsville AL

International Classification:

F25B 9/00

US Classification:

62 6

Abstract:

A MEMS based thermoacoustic cryo-cooler for thermal management of cryogenic electronic devices. The cryogenic cooling system can be integrated directly into a cryogenic electronic device. A vertical comb-drive provides an acoustic source through a driving plate to a resonant tube. By exciting a standing wave within the resonant tube, a temperature difference develops across a stack in the tube, thereby enabling heat exchange between heat exchangers. A tapered resonant tube improves the efficiency of the cooling system, compared with a simple cylinder configuration, leading to reduced harmonics and strong standing waves.

US Patent:

20060059921, Mar 23, 2006

Filed:

Sep 9, 2005

Appl. No.:

11/222226

Inventors:

Zhili Hao - Marietta GA, US
Mark Fowler - Madison AL, US
Jay Hammer - Huntsville AL, US
Michael Whitley - Madison AL, US
David Brown - Meridianville AL, US

International Classification:

F25B 9/00

US Classification:

062006000

Abstract:

A MEMS based thermoacoustic cryo-cooler for thermal management of cryogenic electronic devices and a resonant tube used therein. A vertical comb-drive can provides an acoustic source through a driving plate to the resonant tube. By exciting a standing wave within the resonant tube, a temperature difference develops across a stack in the tube, thereby enabling heat exchange between heat exchangers. A tapered resonant tube improves the efficiency of the cooling system, compared with a simple cylinder configuration, leading to reduced harmonics and strong standing waves.