Abstract: The refrigerator compressor has and wear due to the poor lubrication of the crankshaft, and the power of the compressor lubrication system comes from the crankshaft, so it is very important to optimize the design of the crankshaft. Based on the geometric factors on the oil shaft of the compressor and the distance and the wall of the spiral pump on the oil is calculated. The calculation show that the smaller this distance, the higher the oil on the crankshaft. The calculation results are verified by experiments, and the calculation results and experimental results maintain good consistency, which provides guidance and reference for the analysis and optimization of the crankshaft.

Key words: Refrigerator compressor, Crankshaft, Spiral viscous pump, Oil hole wall thickness, Oil pump capacity, Volume flow rate