Estimation Method for Heating Efficiency of Induction Heating Cooker by Finite Element Analysis

摘要

This report proposes an estimation method for the heating efficiency of an induction heating cooker. In the cooker, two processes transfer energy from the coil to the water in the pan. In the first process, magnetic energy is transferred from the coil to the pan. In the second process, heat energy is transferred from the pan to the water. Copper loss occurs in the first process, and heat loss to the air and other materials occurs in the second process. We estimated the heat value in the pan and the losses in the coil and the aluminum ring by using the 3D finite element method for eddy current problems. Next, we estimated the heat energy transferred to the water and the heating efficiency by using the 3D finite element method for heat transfer problems. The estimation results for the heat value of the pan, the losses and the heating efficiency were validated by the experimental results.