| 摘要 |
<p>An integral cryogenic refrigerator, or cryocooler (10), for cooling an electronic device (68) to cryogenic temperatures. The cryocooler (10) has a reusable access port (104) which comprises an upper threaded opening (149), a lower opening (147) of smaller diameter and a ridge at the juncture of the upper and lower openings (149, 147). A deformable washer (146) is held by a set screw (148) on the ridge of the access port (104) which allows the recharging of the cryocooler (10). A lightweight flexure (26) links a compressor piston (16) to a coupler (20) which is also connected to a regenerator (18) via a lightweight vane (28). An electric motor (90) with an offset shaft (92) drives the coupler (20) via a bearing (100) through a circular path to impart properly timed motion to the compressor piston (16) and regenerator (18). Vibration transmission is reduced by mounting the device to be cooled (68) on an end cap (56) having a raised castlated rim (142).</p> |
