REFRIGERATION SYSTEM WITH CLEARANCE SEALS

摘要

A split Stirling refrigerator includes a pneumatically driven displacer, the displacer is driven substantially through an entire stroke by the pressure differential across a piston element extending from the displacer. A small linear trimming motor is provided to assure proper phasing of the displacer movement with the refrigerator pressure wave, to prevent overstroke, and to assure complete stroke of the displacer.