| 摘要 |
PROBLEM TO BE SOLVED: To obtain a U-shaped pulse refrigerator that can be manufactured easily, and has a high refrigerating capacity in which a cold-storage device and the pulse tube are placed nearly parallel with each other. SOLUTION: One end of the pulse tube (8) is bent approximately 90 deg. to form a curved part (8c). The curved part (8c) is formed in the connection part to the pulse tube (8) of a cold-storage device (5) and connected with a communication part (6) bent approximately 90 deg.. Thus, a pressure loss produced when a working gas moves from the device (5) to the pulse tube (8) is restricted, and further the width between the device (5) and the pulse tube (8) is reduced.
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