| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that when a transmission loss of a microwave is decreased for raising heat efficiency of food upon food heating, or an output of a magnetron is raised to increase supply energy inside a heating chamber in a conventional heating cooker, a spark, locally concentrated heating, and the like occasionally occur inside the heating chamber when heating in an unloading state in which no food or no cooking object is inside the heating chamber, and it is difficult to satisfy a dual requirement of enhancement of heat efficiency of food upon food heating, and safety upon the unloading state by the same structure.SOLUTION: A heating cooker includes: a heating chamber for containing food; a magnetron for supplying a microwave into the heating chamber; a transmission line for connecting the magnetron with the heating chamber; a rotary antenna which is provided in the transmission line under the base of the heating chamber for irradiating the microwave into the heating chamber; and a table plate mounted removably on the base inside the heating chamber, wherein the table plate is composed of a flat plate, and a flange of a stock higher in relative permittivity than the flat plate, and the flange has a structure surrounding a periphery of the flat plate. |
