| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulse tube refrigerating machine of low costs, having a stable high refrigerating capacity and uniform refrigerating capacity even in mass-production, capable of eliminating the circulated flow without stopping a refrigerating machine, even when the circulated flow from a high-temperature side to the low-temperature side direction of the pulse tube is generated, and securing a stable refrigerating capacity for a long period. SOLUTION: This pulse tube refrigerating machine 1 comprises a compressing portion 2, a switch valve 3, a cold storage 4, a pulse tube 7, a bypass circuit 9 and a buffer circuit 10. The circulated flow circulated to the pulse tube 7 through the pulse tube 7, the bypass circuit 9 and the cold storage 4, is generated or suppressed by controlling opening/closing of a supply valve 3a and a return valve 3b of the switch valve 3. COPYRIGHT: (C)2009,JPO&INPIT
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