A pulse tube cryocooler, which has no moving parts in an expander, has the ability to achieve long life, high reliability, less vibration. To develop the Stirling-type pulse tube cryocooler, we need to design a linear compressor to drive the pulse tube cryocooler.
In this study, a moving magnet type linear motor of dual-opposed configuration is designed and fabricated, and this compressor could be operated with the electric power of 100 W and the frequency up to 60 Hz.
The pulse tube cryocooler is addressed as the split arrangement because the pulse tube cold finger is connected the linear compressor with a connecting tube. The linear compressor adopts the dual-opposed configuration to minimize the self-induced vibration.
Experimental investigations have been conducted to evaluate their performance characteristics with respect to several parameters such as the input power, charging pressure and the operating frequency of the linear compressor.