| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulse tube refrigerating machine enabling the simplification and a reduction in time of maintenance operation. SOLUTION: This pulse tube refrigerating machine is formed by installing self-sealing couplings 13 and 14 at both ends of a 4 m connection tube for connecting a valve unit 32 to a cold head 33. In the pulse tube refrigerating machine, self-sealing couplings 37 are also fitted to a high-pressure pipe 35 and a low-pressure pipe 36 for connecting the valve unit 32 to a compressor. Thus, the valve unit can be detachably disposed. COPYRIGHT: (C)2005,JPO&NCIPI
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