| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cryogenic refrigeration apparatus having improved refrigeration efficiency. <P>SOLUTION: The cryogenic refrigeration apparatus includes a displacer caused to reciprocate in a cylinder by the Scotch yoke mechanism 32 including a Scotch yoke 36 (slide groove 38) to which a bearing 35 is movably engaged with, and generates cold by expanding a refrigerant gas inside an expansion space formed in the cylinder by the reciprocation of the displacer. A concave part 45 is provided at a position corresponding to a top dead center of the displacer of the Scotch yoke 36. <P>COPYRIGHT: (C)2013,JPO&INPIT |
