CRYOGENIC TEMPERATURE COOLING DEVICE

To provide a cryogenic temperature cooling device capable of greatly shortening a pre-cooling time while equally maintaining refrigerating capability at stationary time.SOLUTION: The present invention relates to a cryogenic temperature cooling device 20 that comprises a cooling source 1 arranged in a vacuum container 3 and a heat transfer member 4 thermally connecting the cooling source to a cooled part 2, and further has cooling piping 13 which is thermally connected to the cooling source 1 and heat transfer member 4 and in which a refrigerant circulates. The cryogenic temperature cooling device has: a displacer device 23 which is provided to the cooling piping 13 and internally has a displacer 12 arranged outside the vacuum container 3 to let the refrigerant in the cooling piping 13 to reciprocally move; and two cold regenerators 11 which are arranged in the vacuum container 3, and provided to the cooling piping 13 through both ends of the displacer device 23. The refrigerant in the cooling piping 13 is reciprocally moved by driving the displacer 12 in the displacer device 23, and this refrigerant is made to reach the cooled part 2 through the regenerators 11 and cooling source 1.SELECTED DRAWING: Figure 1 【課題】定常時の冷凍能力を同等に維持しながら、予冷時間を大幅に短縮させることができる極低温冷却装置を提供する。【解決手段】真空容器３内に配置される冷却源１と、この冷却源を被冷却部２に熱的に接続する伝熱部材４とを備え、さらに冷却源１と伝熱部材４に熱的に接続され内部に冷媒が流通する冷却配管１３を有する極低温冷却装置２０であって、冷却配管１３に設けられ、かつ真空容器３外に配置され冷却配管１３内の冷媒を往復移動させるディスプレーサ１２を内部に有するディスプレーサ装置２３と、真空容器３内に配置され、ディスプレーサ装置２３の両端を介して冷却配管１３に設けられた２つの蓄冷器１１とを有し、ディスプレーサ装置２３内のディスプレーサ１２を駆動することで、冷却配管１３内の冷媒を往復移動させ、この冷媒を蓄冷器１１を介して冷却源１を通り、被冷却部２に到達させることを特徴とする。【選択図】図１