Deformation and Stress of Refrigeration Compressor Flexible Ring Valve

The purpose of this study is both theoretically and experimentally to present the deformation and stress of a flexible discharge ring valve, and to get design concept on this type valve and its backer plate. The strain measurements of the valve were carried out on the strain gauges mounted at the root of the spoke and at the transition point in the spoke. The deflection measurement was also performed by electrodes and then the relationships among strain, deflection, and pressure were examined. Moreover, the stress and deformation of the valve were statically calculated by the finite element method. These calculations were performed against various drag forces under three different supporting conditions. Comparing the theoretical results with the experimental results, the relationship between the valve deformation and stress was discussed over the wide range of operating pressures. The design concept of _the backer plate was also discussed in conjunction with the valve deformation and stress.