DEVICE FOR THERMALLY COOLING AN OBJECT FROM A COLD SOURCE SUCH AS A CRYOGENIC FLUID BATH

摘要

The cooling device comprises: a first heat exchange element (2) with the cold source (1); A set of first heat exchange fins (3) connected to the first heat exchange element (2) at one of their ends; A second element (4) for heat exchange with the object to be cooled (200); • a set of second heat exchange fins (5) connected to the second heat exchange element (4) at one of their ends; An enclosure (6) containing: the first fins (3) and the second fins (5) interposed and without any direct mechanical contact between them, each fin being inserted in an interstitial space, and a heat exchange gas (7). ) at a desired internal pressure; According to the invention, the other end of each fin (3, 5), opposite the end connected to the heat exchange element (2, 4), carries a positioning wedge adapted to position, advantageously center, said fin in the interstitial space in which it is inserted.