Microwave oven controlling a variation in a cooking time period

摘要

A microwave oven performs a cooking operation in one of several cooking modes having a first cooking time period and a second cooking time period. The first cooking time period is determined in accordance with an output value of a sensor which senses a state of air in a cooking cavity of the microwave oven. The second cooking time period is determined in accordance with the first cooking time period such that the first and second cooking time periods are expressed by a functional relation. The cooking modes include a standard mode with a standard second cooking time period, a high mode with a longer cooking time than the standard second cooking time period, and a low mode with a shorter cooking time than the standard second cooking time period. The high mode is preset such that a variation in its second cooking time period is increased in proportion to the first cooking time period, while the low mode is preset such that a variation in its second cooking time period is increased in inverse proportion to the first cooking time period. The microwave oven allows a user to set a cooking time period such that the cooking time period is controllably lengthened or shortened in proportion to the quantity of food contained in the microwave oven. <IMAGE>