GM CRYOCOOLER

摘要

A GM cryocooler is furnished with: a first cold head including a first displacer and a first cylinder; a second cold head including a second displacer and a second cylinder and being disposed opposing the first cold head; a common drive mechanism for driving axial reciprocation of the first displacer and the second displacer; and a working gas circuit for generating between the first cold head and the second cold head a pressure differential that assists the common drive mechanism.

主权项

1. A Gifford-McMahon (GM) cryocooler, comprising:
a first cold head including an axially reciprocatory first displacer, and a first cylinder, between the first displacer and which a first gas chamber is formed; a second cold head including a second displacer disposed coaxially with respect to the first displacer and axially reciprocatory unitarily with the first displacer, and a second cylinder, between the second displacer and which a second gas chamber is formed, and disposed opposing the first cold head; a common drive mechanism connected to the first displacer and the second displacer such as to drive axial reciprocation of the first displacer and the second displacer; and a working gas circuit connected to the first cold head and the second cold head such as to generate between the first gas chamber and the second gas chamber a pressure differential assisting the common drive mechanism.