リード弁の衝撃疲労に関する研究

抄録

Reed valves used as part of compressors or engines are frequently subjected to impact fatigue fracture caused by repeated collision against a valve seat or valve stopper, but its mechanism has been made clear yet. In this study the effect of seat shape and valve thickness on the impact fatigue of valve was experimentally investigated with a fatigue machine developed using a fluidic device previously. The results obtained can be summarized as follows. (1) The seat shape which induced complicated motion such as overshoot or torsion in the valve after collision decreased remarkably the impact fatigue life of the valve. (2) Valve thickness did not influence impact fatigue life as evaluated by impact velocity instead of impact force.