| 摘要 |
PURPOSE:To make the air preheater of a stirling engine an efficient device having a better sealing quality by forming it through a stack of annular plates provided with a number of bores formed in the circumferential direction and mutually separated from others at annular projecting parts formed in the middle of annular parts. CONSTITUTION:On the occasion of forming an air preheater surrounding the combustion chamber 15 of a stirling engine, a number of annular plates 31 having center holes of combustion-chamber space are formed through stacking. The annular plate 31 is equipped with a number of holes 34a in outer perimeter and a number of holes 33a in inner perimeter, and it has an annular projection 32 between them and through stacking at the annular projection part 32, each annular plate 31 is provided with an interval and at the same time a combustion air passage is formed by a hole 34a, and also a combustion gas passage by a hole 33a. A space between respective passages 34a and 33a is sealed by the annular projection 32. |
