位置偏心对斯特林制冷机回热器泄漏率的影响  

Effect of the Eccentric Position on the Leakage of the Clearance Seal in Stirling Refrigerator

作　　者：陶丽[1] 陈俊华[2] 

机构地区：[1]江苏工业学院机械与能源工程学院,江苏常州213016 [2]常州工程职业技术学院

出　　处：《江苏工业学院学报》2009年第3期12-14,共3页Journal of Jiangsu Polytechnic University

摘　　要：传统的回热器使用接触式滑动密封存在磨损,限制了制冷机的使用寿命。应用间隙密封则可以在密封的同时消除接触磨损和因此而产生的污染。但由于间隙内气体的泄漏,引起了冷量损失,使制冷量减少。在斯特林制冷机回热器密封间隙泄漏率及泄漏引起的冷量损失表达式的基础上,建立了间隙密封式斯特林制冷机位置偏心对间隙泄漏率影响的数学物理模型,推导了位置偏心对间隙泄漏率影响的表达式。分析了位置偏心对间隙泄漏率的影响。The regenerator is a key part of the cold head of Stirling refrigerator. Traditionally, the seal between the regenerator and cylinder wall was accomplished using sliding bearings, but there was contact and wear in the bearings. As a result the working life of Stirling refrigerator was limited. The method of clearance seal can achieve the effect of the seal between regenerator and cylinder wall while eliminating contact between them. Thus it eliminates wear and another source of wear in the refrigerator. But, the gas leakage of clearance seal leads to the leakage losses and the reduction of the cooling power. On the basis of a set of equations of the leakage and the leakage losses of the clearance seal in Stirling refrigerator with clearance seals, the paper establishes the mathematical and physical model of the effect of the eccentric position on the leakage of the clearance seal in Stifling refrigerator, and describes a set of equations of the the effect of the eccentric position on the leakage of the clearance seal.

关 键 词：斯特林制冷机 间隙密封 泄漏率 位置偏心 

分 类 号：TB661[一般工业技术—制冷工程]