| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration unit for improving reliability, and having optimal refrigeration capacity to required specifications. SOLUTION: The respective first cooling end 23 and second cooling end 33 of first and second pulse tube refrigerating machines 20 and 30 are thermally connected. An arithmetic operation control means 12 controls operation of these first and second pulse tube refrigerating machines 20 and 30 so as to be driven in parallel, and cools the first cooling end 23 and the second cooling end 33. COPYRIGHT: (C)2005,JPO&NCIPI
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