CPC F25B 9/14 (2013.01) [B22F 1/00 (2013.01); B22F 1/05 (2022.01); B22F 1/065 (2022.01); C22C 13/02 (2013.01); B22F 2301/30 (2013.01); B22F 2304/15 (2013.01); F25B 2309/023 (2013.01)] | 4 Claims |
1. A cold storage type cryogenic refrigerator using a cold storage material, wherein the cold storage material is tin alloy particles, and the content of tin in the tin alloy particle is not less than 40% and not more than 99%, the cold storage type cryogenic refrigerator comprising a cold storage device, wherein the cold storage material filled in the cold storage device is tin alloy particles, wherein the cold storage device comprises a first-stage pushing piston (11) and/or a second-stage pushing piston (12), and a first-stage cold storage material (11c) filled in the first-stage pushing piston (11) and/or a second-stage cold storage material (12c) filled in the second-stage pushing piston (12) uses tin alloy particles, and
wherein the second-stage cold storage material (12c) comprises a second-stage hot end cold storage material (12c1) and a second-stage cold end cold storage material (12c2), the tin alloy particles serve as the second-stage hot end cold storage material (12c1) of a hot end of the second-stage pushing piston (12) and the second-stage cold end cold storage material (12c2) of a cold end of the second-stage pushing piston (12) uses GOS or HoCu2.
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