Patent ID: 7446290

Claim:
A method for controlling a coffee maker and microwave oven, comprising the steps of: supplying potable water to a funnel through a water supply pipe, and putting a heating heater into operation for heating the potable water, upon reception of a coffee extraction order; extracting coffee at the funnel; upon finishing extraction of coffee, operating a heat conservation heater for a preset heat conservation time period, to conserve a heat of the extracted coffee; stopping the heat conservation heater if the heat conservation time period is passed; and upon reception of a coffee heat conservation order, putting the heat conservation heater into operation, for carrying out heat conservation of the coffee, again, wherein the step of operating the heat conservation heater includes the steps of: measuring a temperature of the heating heater with a temperature sensor, receiving the measured temperature periodically, and calculating a rate of temperature change of the heating heater, comparing the rate of temperature change to a preset value, and if the rate of temperature change exceeds the preset value, stopping the heating heater, and putting the heat conservation heater into operation.