公开(公告)号：US11326739B2

公开(公告)日：2022-05-10

申请号：US16373770

申请日：2019-04-03

Applicant: Nuctech Company Limited

Inventor： Hongyan Wei ,  Yulan Li ,  Jianping Chang ,  Haijun Yu ,  Xiuxia Li ,  Hong Li ,  Li He

IPC: F17C3/08 ,  F25D3/10 ,  F25D29/00 ,  F25D19/00 ,  F25B9/14 ,  H01F6/04

Abstract: A cryostat includes a room temperature vessel, a low temperature vessel, and a refrigeration mechanism. The room temperature vessel includes a room temperature tank, an outer neck tube and a sealing head. The low temperature vessel includes a low temperature tank, an inner neck tube and a liquefaction chamber. The liquefaction chamber corresponds to the first opening and passes through the first opening. The refrigeration mechanism includes a device panel and a refrigeration device. The device panel is disposed on the sealing head. The refrigeration device includes a body and a cold finger. The body is disposed at the device panel. The cold finger is connected with the body and extends into the liquefaction chamber.