Ball spline supporting Stirling refrigerator

Abstract

The invention discloses a ball spline supporting Stirling refrigerator, which comprises a compressor system, a cold head system and a motor crankshaft driving system, wherein the compressor system is composed of a cylinder and a piston assembly; the piston assembly is composed of a piston and a piston ball spline; the cold head system is composed of a cooling cylinder, an ejector, a regenerator and an ejector ball spline; the regenerator is positioned in the ejector; the motor crank driving system is composed of a motor, a piston connecting rod, a crankshaft and an ejector connecting rod; and the cylinder, the cooling cylinder and the motor are installed on a crankcase. The ball spline supporting Stirling refrigerator has the advantages of stable thermal performance and high reliability, and the service life of the refrigerator is prolonged.

Description

technical field [0001] The invention belongs to a refrigerator in the technical field of refrigeration, in particular to a ball spline supported Stirling refrigerator. Background technique [0002] The Stirling refrigerator is a refrigerator that works according to the reverse Stirling cycle (a thermodynamic cycle composed of two isothermal processes and two isovolumic processes). With the advantages of wide range and simple operation, it has been used in communications, meteorology, military, aerospace, low-temperature physics, low-temperature electronics, low-temperature materials, low-temperature medicine, low-temperature optics, bioengineering, earth resource exploration, microscopic particle research, etc. high-tech field. [0003] Stirling refrigerators are widely used in precision instruments and equipment such as infrared detectors and superconducting quantum interferometers. Electronic devices, such as superconducting quantum interferometer magnetometers (SQUID ma...

AI Technical Summary

Problems solved by technology

[0010]The main problem of the integral Stirling refrigerator is: the seal wear caused by the lateral force acting on the piston and the ejector restricts the life of the whole machine

In 2004, the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences proposed a linear slide rail support structure to solve this problem, and produced two prototypes, which better solved the problem of piston lateral force (Xi Youmin, Li Qing, Li Qiang, Nie Zhongshan. Linear slide The development and performance adjustment of rail-supported miniature Stirling cryocooler. Cryogenics and Superconductivity, 2005(3):19-21,35) The installation between the linear slide rail and the corresponding cylinder of the prototype requires many parts and the structure is complex. High engineering cost

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