Patent ID: 11906228
Assignee: CSIC PRIDE (NANJING) CRYOGENIC TECHNOLOGY CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC F  B  C | IPC B  C  F

Claim 2:
3. 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, wherein when the first-stage cold storage material (11c) uses tin alloy particles, the tin alloy particles serve as the first-stage cold storage material (11c) of a cold end of the first-stage pushing piston (11), 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.