空调转子压缩机油温过热度与粘度关系实验研究  

Experimental study on the relationship between oil superheat and viscosity of air conditioning compressor

作　　者：卢耀汕 廖四清 曾令华 LU Yaoshan;LIAO Siqing;ZENG Linghua(Guangdong Meizhi Compressor Limited,Foshan 528000)

机构地区：[1]广东美芝制冷设备有限公司,广东佛山528000

出　　处：《家电科技》2022年第1期101-103,共3页Journal of Appliance Science & Technology

摘　　要：现有空调转子压缩机可靠性评价时会采用油温过热度这个指标,一般认为油温过热度与粘度呈单调递增关系。为了验证这个观点,通过实验研究了压缩机油池中的制冷剂溶解度特性、油温过热度和粘度之间的关系。实验结果表明:对于同一工况,压缩机油池中不同位置溶解度基本相等,且未达到饱和溶解状态,故油温高的位置粘度反而低;对于油池相同位置,当油温过热度升高时,部分工况粘度反而降低,因此油温过热度与粘度并非呈单调递增关系。实验结果证明了现有压缩机用油温过热度作为可靠性评价指标存在一定局限性与不合理性,采用粘度作为评价指标更合理。The oil superheat is currently adopted as the criterion of the reliability for rotary compressors in air-conditioning systems. It is generally acknowledged that the viscosity of the oil increases monotonously with oil superheat. Experimentally studied the relationship between the solubility characteristics of refrigerant in oil, the oil superheat and the oil viscosity. The results showed that the dissolved refrigerant levels were almost the same at various positions within the oil pool, and the saturation state was not reached. Therefore, the oil viscosity in positions with high temperature was rather low, and for a fixed position within the oil pool, the oil viscosity could decrease when the superheat raised in some testing conditions, which indicated that viscosity is not monotonously related with oil superheat. The experiment results proved the limitation and irrationality of the current methodology which utilized oil superheat as a standard for compressor reliability,to a certain extent. It is also recommended to use oil viscosity as a more reasonable criterion.

关 键 词：压缩机 油温过热度 粘度 溶解度 实验研究 

分 类 号：TB6[一般工业技术—制冷工程]