2007 Volume 8 Issue 4 Pages 281-285
In the case of sterilizing foods by heating in the industrial microwave oven, uneven heating is occurred inside heated foods. It is problem that unheated part occurs shortage of sterilization and overheated part occurs deterioration of foods. In this report, we focus attention on circular polarized wave and linear polarized wave. First, each polarized wave irradiated the food, and absorbed power distribution inside of food is calculated. We examined validity of circular polarized wave for uniform heating. Next, we used circular polarized wave generator and cylindrical chassis for actual use, absorbed power distribution inside of the food is examined. Moreover absorbed power distribution inside of the food which was arranged in cylindrical chassis with rectangular waveguide for continuous heating is examined, too. As a result, local heating is reduced, and 43% uniform heating is brought to realization by using circular polarized wave than using linear polarized wave. And, in the case of using the chassis for actual use, circular polarized wave is valid for uniform heating of foods as with basic study.