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AssigneeKabushiki Kaisha Toshiba
InventorsToru Kuriyama, Masahiko Takahashi, Hideki Nakagome, Akiko Takahashi, Yoichi Tokai
Estimating the term…
A cryogenic refrigerator includes a first refrigerant filled in a final refrigerating force storage chamber on a high temperature side thereof and consisting essentially of a composition expressed by (a) (Er.sub.(x) R.sub.(1-x)).sub.3 Ni.sub.(y) Co.sub.(1-y), or (b) Er.sub.(x) R.sub.(1-x) Ni.sub.(y) Cu.sub.(1-y) wherein 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1, and R denotes a rare earth element selected from the group consisting of Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb and Sc, a second refrigerant filled in the final refrigerating force storage chamber on a low temperature side thereof and consisting essentially of a composition expressed by (f) Er.sub.(x) R.sub.(1-x) Ni.sub.(y) Co.sub.(1-y), or (g) (Er.sub.(x) R.sub.(1-x)).sub.3 AlC.sub.(y) wherein 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1 and R represents a rare earth element selected from the group consisting of Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb and Sc, and a partition member for separating the second refrigerant from the first one so as to not be mixed in the refrigerating force storage chamber.
A cryogenic refrigerator capable of creating a higher refrigerating capacity by expanding compressed helium gas after it is cooled while being passed firstly through a first refrigerating force storage chamber at a first cooling stage and finally through a final refrigerating force storage chamber at a final cooling stage, said cryogenic refrigerator comprising:
A cryogenic refrigerator capable of creating a higher refrigerating capacity by expanding compressed helium gas after it is cooled while being passed firstly through a first refrigerating force storage chamber at a first cooling stage and finally through a final refrigerating force storage chamber at a final cooling stage, said cryogenic refrigerator comprising:
Dependencies are inferred from the claim text.