To provide structure of a heating part, which can endure the heating at higher temperatures than the conventional heating temperature.
In the external combustion engine, the heating part 13 heating part of the working medium 12 to generate vapor of the working medium 12, and a cooling part 14 cooling the vapor to devolatilize it are disposed in a vessel 11 in which liquid working medium 12 is sealed to be flowable. Volume of the working medium 12 is fluctuated by the generation and the devolatilization of the vapor, and displacement of liquid part of the working medium 12 generated by the volume fluctuation of the working medium 12 is converted into mechanical energy and the mechanical energy is output. The structure of the heating part 13 is constituted by joining an inner members 51a, 53a disposed to the inside with outer members 51b, 53b disposed to the outside, and the outer members 51b, 53b are made from second material higher in heat resistance than first material of the inner members 51a, 53a. The inner members 51a, 53a is thicker than heat penetration depth dimension of the first material.
YATSUKA SHINICHI
KANEKO TAKU
ODA SHUZO
KOMAKI KATSUYA
Takahiro Miura
Fumihiro Mizuno
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