| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulse tube refrigerator capable of performing a high refrigerating capability. SOLUTION: A double-tube structure has an inner cylinder and an outer cylinder formed with low-temperature ends and high-temperature ends. An internal space is formed at an inside of the inner cylinder, and an external space is formed between the inner cylinder and the outer cylinder. The internal space communicates with the external space at the lower-temperature ends. A cool storage material is filled in one of the internal and external spaces. A heat insulation layer is disposed between the internal space and the external space. A gas supply means repeats a supply of the gas to the high-temperature end of the space filled with the storage material of the internal and external spaces and a recovery of the gas from the high-temperature end of the space.
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