公开(公告)号：US4944155A

公开(公告)日：1990-07-31

申请号：US366184

申请日：1989-06-14

Applicant: David K. Alexander

Inventor： David K. Alexander

IPC: F17C3/08 ,  F25D3/10 ,  G01J1/02 ,  G01J5/02 ,  G01J5/28

CPC classification number: F17C3/08 ,  F17C2201/0109 ,  F17C2201/0119 ,  F17C2201/032 ,  F17C2203/018 ,  F17C2203/0395 ,  F17C2203/0629 ,  F17C2203/0646 ,  F17C2205/0165 ,  F17C2227/0353 ,  F17C2270/0509 ,  F17C2270/0518

Abstract: A cold exchange system includes a Dewar flask having an inner vessel and an exterior vessel joined to and surrounding the inner vessel, defining an evacuable chamber therebetween. The flask includes an evacuation port through the inner and exterior vessels through which cryogenic gas contained in the inner vessel can evaporate during the cold exchange process. The exterior vessel includes a device port through which a device to be cooled extends. The device is housed in a housing that is engaged over the device port. A cold finger is in heat transfer contact with the inner vessel. A non-metallic flexible bellows is sealingly adhered to the cold finger at one open end of the bellows. The other open end of the non-metallic bellows is sealingly adhered at its other open end to a top plate which is vacuum fitted over the device port. The non-metallic bellows and device housing define a second evacuable chamber separate from the Dewar flask vacuum chamber. The separation of the vaccum chambers is maintained by the non-metallic bellows and adhesive joints between the bellows and the cold finger and top plate. The device to be cooled is mounted in direct mechanical contact with the cold finger within the device chamber defined by the non-metallic bellows. The joint between the non-metallic bellows and the metallic cold finger and top plate is formed by an adhesive compound essentially containing an admixture of an epoxy with fine grain beads. The beads each generally have the same outer diameter to create a uniform adhesive joint, to insure a vacuum tight seal, and to provide a uniform spacing of the bellows from the aluminum components to insure long-term vacuum integrity of the adhesive joint during repeated thermal cycling.

Abstract translation: 冷交换系统包括具有连接到内部容器并围绕内部容器的内部容器和外部容器的杜瓦瓶，在它们之间限定可抽空的室。 该烧瓶包括通过内部和外部容器的排出口，冷容器内容器中的低温气体可以通过该容器蒸发。 外部容器包括装置端口，待冷却装置通过该装置端口延伸。 该装置容纳在与设备端口接合的外壳中。 冷手指与内血管传热接触。 非金属柔性波纹管在波纹管的一个开口端密封地粘附到冷指。 非金属波纹管的另一个开口端在其另一个开口端密封地粘附到真空安装在设备端口上的顶板上。 非金属波纹管和装置壳体限定了与杜瓦瓶真空室分离的第二抽空室。 真空室的分离由波纹管和冷指和顶板之间的非金属波纹管和粘合剂接头保持。 要冷却的装置安装在与非金属波纹管限定的装置室内的冷指状物的直接机械接触中。 非金属波纹管与金属冷指和顶板之间的接合部由基本上含有环氧树脂与细晶粒的混合物的粘合剂形成。 珠子各自通常具有相同的外径以产生均匀的粘合接头，以确保真空密封，并且提供波纹管与铝部件的均匀间隔，以确保在重复加热期间粘合剂接头的长期真空完整性 循环。