The invention relates to a method for judging the
rice water amount of a heater. The method comprises the following step of: 1, timing from zero by using a first
timer, timing a time interval
delta t from zero by using a second
timer, and entering a step 2, wherein n is equal to 1; 2, when the first
timer reaches preset total working time t0, entering a step 6, otherwise, entering a step 3; 3, when
delta t reaches a preset time interval
delta tn, entering a step 4, otherwise, entering a step 5; 4,
retiming from zero by using the second timer, adding n with 1, updating the delta tn and Tn, and entering the step 5; S, when a detected temperature Tb is higher than or equal to the corresponding judged temperature Tn which corresponds to the delta tn, stopping the heater from heating, timing heating
stop time by using a third timer, entering the step 2; and when the detected temperature Tb is lower than the judged temperature Tn which corresponds to the delta tn, heating with the heater by using power P2, and entering the step 2; and 6, judging the
rice water amount according to the length of the heating
stop time accumulated by using the third timer.