Cryocooler Cold Fin Design to Reduce Gap Clogging in Cryogenic Devices

The invention transitions from a conventional planar gap configuration to a three-dimensional finned structure. Cold fins extend from the cold body into the heat transfer ring, creating multiple heat exchange surfaces at different spatial positions. This dimensional expansion increases the heat exchange area while maintaining adequate spacing to prevent clogging of individual heat exchange pathways.

The heat transfer ring is divided into multiple segments by the cold fins, creating numerous independent heat exchange channels. Instead of a single large gap that is prone to clogging, the system uses multiple smaller gaps distributed throughout the structure. This segmentation ensures that if one channel becomes blocked, others remain functional, improving overall system reliability.

The invention adds the radial dimension to the heat exchange interface by extending cold fins from the cold body into the heat transfer ring. This creates multiple heat exchange surfaces at different radial positions while maintaining the axial gap for easy attachment and removal. The finned structure transforms a two-dimensional contact interface into a three-dimensional heat exchange network.

The cold fins are nested within the heat transfer ring structure, with the fins extending into the ring's interior space. This nested configuration maximizes the heat exchange area within the available spatial envelope, allowing efficient thermal coupling while preserving the external dimensions needed for easy assembly and disassembly operations.