Refrigeration device and method

A cryogenic refrigeration device comprising:

• an enclosure delimiting a fluidtight vacuum volume closed by a cover,
• a cryogenic cooler mounted through the cover and having a first portion situated outside the enclosure and a second portion situated in the enclosure, the cryogenic cooler being configured to employ a cold source of cryogenic-cycle fluid,
• a heat-conducting plate configured to receive and cool a component, the at least one plate being cooled by a stream of cycle fluid via a cycle-fluid circuit supplying a set of heat exchangers of the cryogenic refrigeration device which are respectively in a heat-exchange relationship with the plate,
• wherein the cycle-fluid circuit has a pipe conveying cycle fluid to a manifold of the cryogenic refrigeration device which is mounted on the plate, the cycle-fluid circuit having at least one transfer pipe configured to transfer cycle fluid from the manifold to at least one heat exchanger mounted on the same plate, the cycle-fluid circuit having at least one return pipe configured to return fluid that has circulated through the at least one heat exchanger to the manifold.