Design And Experimental Study Of High Frequency Pulse Tube Refrigerator

Because of its compact structure, high efficiency, high reliability, low vibration and non-magnetic interference, high frequency pulse tube refrigerator which is driven by linear compressor has applications in the military, space technology and scientific research and many other fields. There is great potential for the cryogenics refrigeration technology. In order to further explore the couple relation of the linear compressor and the pulse tube refrigerator, and to decrease the cooling temperature, the theoretical and experimental research in this paper focuses on the following aspects:1. Designed a high-frequency pulse tube refrigerator driven by linear compressor, which is Stirling-type pulse tube refrigerator. By analyzing the arrangement multistage pulse tube refrigerators, a thermally coupled two-stage Stirling-type pulse tube refrigerator with non-isothermal boundary arrangement was chosen, which is called separated type normally.2. Designed a linear compressor for driving two-stage high-frequency refrigerator. By analyzing the linear motor-driven compressor types, the move-magnetic linear compressor was selected, which is a type of electromagnetic vibration compressor.3. Studied the design method of high-frequency pulse tube refrigerator, analyzed some important design parameters on the performance of pulse tube refrigerator. Based on studying and using pulse tube refrigerator component models, established a two-stage high frequency pulse tube refrigerator integrated design model.4. Calculated regenerator using computational procedures REGEN for two-stage high-frequency pulse tube refrigerator design, and determined the structure and geometry of cold head and the linear compressor exhaust volume. Predicted the performance of first-stage pulse tube refrigerator.5. Manufactured the components of cold head of pulse tube refrigerator and linear compressor, assembled refrigerator system, structured and tested the experimental device.