A Miniature, Vibration-Free, Rhombic-Drive, Stirling-Cycle Cooler
The Stirling cycle is well known as a means of efficiently producing mechanical refrigeration at cryogenic temperatures, and has been incorporated into a number of ground-based and airborne systems. Recently, efforts were initiated to significantly improve its operational characteristics, with special emphasis on reducing vibrations. An improved model has resulted from the combination of a proven thermodynamic design with a completely balanced drive. The resulting unit is a miniature, vibration-free refrigerator for systems that cannot tolerate mechanical vibrations. The cooler is hermetically sealed, free-convection-cooled, and is designed to produce from 0.2 to 2.0W of refrigeration at 77°K.
KeywordsDrive Motor Cold Spot Cold Finger Charge Pressure Inertia Torque
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