Passive motion control of pneumatically driven displacers in cryogenic coolers
Abstract
The split cryogenic cooler with a remote cold finger offers many advantages for use in cooling of infrared systems. A pneumatic drive for the displacer in such coolers was adopted in many cryocooler designs. This concept can be significantly improved by causing the displacer to move sinusoidally rather than in an essentially square wave, as in most of the present models. The way this motion was achieved passively is described and its advantages outlined. Data of minicoolers using this concept are presented.
- Publication:
-
3rd Cryocooler Conference
- Pub Date:
- May 1985
- Bibcode:
- 1985crco.conf..161P
- Keywords:
-
- Control Stability;
- Coolers;
- Cryogenic Equipment;
- Displacement;
- Infrared Detectors;
- Mechanical Drives;
- Pneumatic Circuits;
- Stable Oscillations;
- Cooling;
- Cryogenics;
- Eddy Currents;
- Magnetic Properties;
- Oscillation Dampers;
- Remote Control;
- Sine Waves;
- Engineering (General)