Microwave oven with automatic cooking mode selecting function

A microwave oven comprising:

• a) a heating chamber;
• b) a plurality of cooking utensils detachably disposed in the heating chamber selectively in accordance with cooking contents, the cooking utensils including at least an upper top plate and a lower top plate disposed up and down in the heating chamber respectively and a food holder placed on the upper top plate;
• c) a plurality of heat sources for heating food placed on or contained in at least one of the cooking utensils, the heat sources including a magnetron, an oven heater and a grill heater;
• d) cooking utensil detecting means for detecting the cooking utensil disposed in the heating chamber;
• e) cooking mode selecting means connected to the cooking utensil detecting means for selecting one of a plurality of cooking modes in accordance with a result of detection by the cooking utensil detecting means, the cooking mode selecting means selecting a microwave cooking mode when the result of detection by the cooking utensil detecting means indicates that neither the upper nor the lower top plate is present in the heating chamber, the cooking mode selecting means selecting a heater cooking mode when the result of detection by the cooking utensil detecting means indicates that either the upper or the lower top plate is present in the heating chamber, the cooking mode selecting means further selecting either an oven mode or a grill mode on the basis of presence or absence of the food holder on the upper top plate when the heater cooking mode is selected;
• and
• f) control means connected to the cooking mode selecting means for controlling any one of the magnetron, the oven heater and the grill heater in accordance with the cooking mode selected by the cooking mode selecting means on the basis of a cooking program according to the selected cooking mode.