| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently improve the refrigerating power of a pulse pipe refrigerating machine by readily realizing the optimum PV phase angle at the low- temperature end of a pulse pipe. SOLUTION: A pulse pipe refrigerating machine is constituted in such a way that a cold storage device 3 and a pulse pipe 4 are connected in series with the connecting pipe 2 of a compressor 1 in this order and, at the same time, a buffer tank 6 is connected to the normal-temperature end of the pulse pipe 4 through an orifice valve 5 and the tank 6 is connected to the middle section of the connecting pipe 2 with a branch pipe 7 interposed with another orifice valve 8. Then the normal-temperature end of the pulse pipe 4 is connected to the normal-temperature end of the cold storage device 3 through a double-inlet valve 9.
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