Miniature integral stirling cryocooler

Details Miniature integral stirling cryocooler Miniature integral stirling cryocooler

1989-04-12

1990-12-25

Capossela, Ronald C.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

220288, 220378, F25B 900

Patent

active

049793683

ABSTRACT:
An integral cryogenic refrigerator, or cryocooler, for cooling an electronic device to cryogenic temperature. The cryocooler has a minimum number of moving parts. A lightweight flexure links a compressor piston to a coupler which is also connected to a regenerator via a lightweight vane. An electric motor with an offset shaft drives the coupler via a bearing through a circular path to impart properly timed motion to the compressor piston and regenerator. This arrangement minimizes the weight and number of moving parts, resulting in maximum efficiency and operating life. Vibration transmission is minimized by mounting the device to be cooled on an end cap having a raised castlated rim. A reusable access port allows the cryocooler to be readily recharged.

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