2017 Volume 34 Issue 3 Pages 273-
The reciprocating compressor is mainly used in household refrigerators, and the lubricating oil is supplied to the compression mechanism by the oil pump system, which consists mainly of the oil viscous pump. The performance and reliability of the refrigerant compressors are influenced by the lubricating oil. Recently, we examined the flow characteristics of the oil viscous pump provided with a spiral groove on the shaft surface, in theoretical and experimental study. When the oil flow in the spiral groove was assumed to be fully developed and steady laminar flow, it became clear that relationship between the pump head and the discharge flow rate of the oil viscous pump becomes in theoretically linear function. Also by the experiments, it was found that if the oil groove length is greater than a certain value, the error between the experimental flow characteristics and the theoretical flow characteristic was small.
