| 摘要: |
| 为了模拟与压缩机工作状态尽量接近的实验条件，本文在密封的高压环境下测试了在R290/矿物油混合物组合下的滑片-活塞摩擦副的摩擦系数、咬合力和磨损量。测试样件为压缩机中的滑片与滚动活塞量产件，根据压缩机的实际运行工况设定了滑片与滚动活塞间相对滑动速度、负载及润滑油温度等实验条件范围，采用电子扫描镜检测实验后样件的表面形态，并与目前使用量较大的R410A/POE油混合物组合进行对比。结果表明，在R290/矿物油混合物组合下，滑片-活塞摩擦副的摩擦系数，比R410A/POE油组合的摩擦系数大0.05~0.1，但其咬合负载高出300 N，表明在R290/矿物油混合物组合下，压缩机的抗磨损能力增强，但摩擦功耗也同时增加，需进一步改进。 |
| 关键词: 摩擦系数 压缩机 润滑油 R290 |
| DOI： |
| Received:May 04, 2017 |
| 基金项目:国家自然科学基金（51606140）和中国博士后科学基金（2016M600789）资助项目。 |
|
| Comparison of Tribological Characteristics of Vane-piston Interface between R290 and R410A in Rotary Compressor |
|
Chen Zhenhua1, Li Gaimin2, Wu Jianhua1
|
| (1.School of Energy and Power Engineering, Xi’an Jiaotong University;2.Guangdong Meizhi Compressor Co., Ltd.) |
| Abstract: |
| R290 has been considered for use in air-conditioning systems as a low global warming potential (GWP) refrigerant. This paper describes the tribological characteristic of the vane-piston tribopair in a R290 rotary compressor. For the purpose of simulating the tribopair working conditions, the vanes and rolling pistons of a compressor were directly adopted as test specimens. All of the tribological tests were performed under sealed high-pressure conditions, with test conditions such as the relative sliding speed, loads, and temperatures set based on actual operating conditions of a compressor, and the friction coefficients, scuffing resistances, and wear depths were measured. Furthermore, the morphological changes were investigated using a scanning electron microscope after the tests. As a comparison benchmark, tests were also conducted using R410A/polyolester oil. From these tests, it was evident that the friction coefficients and scuffing load of the vane-piston interface in the presence of R290/mineral oil were respectively 0.05–0.1 and 300 N higher than those of R410A/polyolester. On the other hand, the wear resistance ability with R290/mineral oil was better than that with R410A/polyolester. |
| Key words: friction coefficient compressor lubricant oil R290 |
