Temperature and Thermal Deformation Analysis on Scrolls of Scroll Compressor
The thermal deformation of scrolls would significantly affect the hermetic property between scrolls, and then affect the efficiency of scroll compressor. Therefore, the thermal deformation of scrolls becomes the major object in this research. Before proceeding with thermal deformation analysis, accurate temperature distribution must be obtained first. In this research, measuring the temperature inside the real scrolls during steady state was accomplished through experiment. Then, reasonable thermal boundary conditions according to the measured temperature were constructed to carry out heat transfer analysis to find the temperature distribution of scrolls. After getting the temperature distribution, the thermal deformation distribution of scrolls can then be solved by executing thermal deformation analysis. Finally, combining fixed and orbiting scrolls and proceeding with stress and deformation analysis, this research successfully obtains the stress and deformation distributions with the orbit angle corresponding to maximum compression ratio. Furthermore, in order to verify the result of analysis, a strain measurement experiment was conducted and the strain on the surface of fixed scroll base was measured and compared with simulation results.