COLD STIRLING ENGINE AND METHOD FOR MANUFACTURING COLD STIRLING ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a cold Stirling engine excellent in workability and supply of a cooling heat source especially in consideration of sealing performance, and a method for manufacturing the cold Stirling engine.SOLUTION: Liquefied gas is used as cold energy in a liquefied state. A low temperature heat exchanger 10 includes an integrated block body 12 having a working gas passage space 11 formed therein, and a core 13 inserted and fitted into the working gas passage space 11. A reciprocation passage of the working gas includes a first passage formed in a pipe of the core 13 and a second passage formed between the core 13 and the working gas passage space 11.