| 摘要 |
A Stirling engine, wherein the inner yoke of a linear motor is installed on the outer peripheral surface of a cylinder. To keep a balance between a pressure in a compression space on one end side of a displacer and a pressure in a back pressure space on the outer peripheral side of the cylinder, a first flow passage is formed in the piston starting at the compression space side end face toward the outer peripheral surface and a second flow passage allowing the first flow passage to communicate with the back pressure space is formed in the cylinder. The second flow passage is formed of a through hole radially passed through the wall of the cylinder and a communication passage formed between the outer peripheral surface of the cylinder and the inner peripheral surface of the inner yoke to communicate the through hole with the back pressure space.
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