| 摘要 |
PURPOSE:To obtain large power as a prime mover and high freezing capability as a refrigerator by enabling at least one of the two pistons to make telescopic motion in reciprocating directions, while the said two pistons make reciprocating motions in both operation spaces at high and low temperatures, respectively, with a phase difference thereat. CONSTITUTION:An actuating space 4 on high temperature side surrounded by the displacer 1 and cylinder 3 is communicatively connected with the actuating space 5 on low temperature side surrounded by the displacer 1, piston 2 and cylinder 3 by means of the high temperature exchanger 6, regenerator 7 and low temperature exchanger 8, the displacer 1 is connected with the crankshaft 11 by means of the displacer rod 9 and displacer connecting rod 10 with allowing the part 1c of displacer head to slide by centrifugal force against the skirt and the displacer base 1a fixed with the displacer rod 9.
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