JP2005069168A5 - - Google Patents

Claims (2)

A first pressure vessel;
A second pressure vessel having a heat radiating portion and a heat absorbing portion and forming a closed space together with the first pressure vessel;
A cylinder assembled to the first and second pressure vessels enclosing the working medium;
A piston that reciprocates within the cylinder;
A displacer that reciprocates with a phase difference with respect to the piston in the cylinder;
A compression space formed between the piston and the displacer;
An expansion space formed on the opposite side of the piston with respect to the displacer;
A regenerator disposed in a communication path in the second pressure vessel and communicating the compression space and the expansion space;
A first heat exchanger disposed on the expansion space side of the regenerator inside the second pressure vessel; and a second heat exchanger disposed on the compression space side of the regenerator. ,
The second pressure vessel, seen including a cylindrical member, and a cap member to which the attached to the inside of the expansion space side end portion of the cylindrical member,
A Stirling engine in which the cap member is formed of a concave plate material whose central portion is recessed toward the displacer . The Stirling engine according to claim 1, further comprising a transmission member that transmits cold heat from the cap member to the cylindrical member.