Vibration reduction of pulse tube cryocooler driven by single piston compressor

• Published in: Cryogenics (Guildford) Vol. 52; no. 12; pp. 816 - 818
• Main Authors: Chen, Houlei, Xu, Nana, Liang, Jingtao, Yang, Luwei
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-12-2012; Elsevier
• Subjects: Applied sciences; Compressors; Cryogenics; Electric power generation; Energy; Energy. Thermal use of fuels; Engines and turbines; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; High frequency; Leaf springs; Mathematical analysis; Pistons; Pulse tube (E); Pulse tubes; Reduction; Refrigerating engineering. Cryogenics. Food conservation; Single piston; Vibration; Single piston; Vibration; High frequency; Pulse tube (E); Cooler; Experimental data; Cooling; Tube; Cryogenics; Development; Piston; Compressor
• ISSN: 0011-2275; 1879-2235
• DOI: 10.1016/j.cryogenics.2012.09.005

► A set of leaf springs with an additional mass is proposed to reduce the system vibration. ► The vibration could change from 55mm/s to 5mm/s by proper leaf spring set. ► Single piston compressor with vibration reduction provides a good choice for PTC.
The development of pulse tube coolers has progressed significantly during the past two decades. A single piston linear compressor is used to in order to reduce the size and mass of a high frequency pulse tube cryocooler. The pulse tube achieved a no-load temperature of 61K and a cooling power of 1W@80K with an operating frequency of 80Hz and an electrical input power of 50W. By itself, the single piston compressor generates a large vibration, so a set of leaf springs with an additional mass is used to reduce the vibration. The equation relating the mass, the elasticity coefficient of leaf spring and the working frequency is obtained through an empirical fit of the experimental data. The vibration amplitude is reduced from 55mm/s to lower than 5mm/s by using a proper leaf spring. This paper demonstrates that a single piston compressor with vibration reduction provides a good choice for a PTC.