ANALYSIS OF SCROLL THRUST BEARING

摘要

Several analytical models on scroll thrust bearings were investigated and compared with the experiment using an actual scroll compressor. With the rigid-body model allowing the orbiting flat plate only to tilt against the thrust bearing, the calculated hydrodynamic oil-film pressure could only carry scroll's axial force acting within the limited range of location on the bearing. On the other hand, the newly-proposed model considering an additional effect of material deformations showed load-carrying characteristics that allowed the axial force locus to be beyond the limitations of the rigid-body wobbling model. The tentative result of the oil-film pressure distribution from the model including deformation showed a better agreement with the experimental results than those from the simpler rigid-body model.