Method of baking both sides of ingredients and an electric cooker used therefor

1. A method of baking both sides of ingredients, the method comprising:

putting an upper die over a lower die, wherein the upper and lower dies have different respective masses such that one of the upper and lower dies has a greater mass and the other of the upper and lower dies has a smaller mass;

heating the lower die and the upper die with electric heaters having the same rated power;

detecting a temperature of the die having the greater mass to control consumed power of the electric heater that heats the die having the smaller mass, of which temperature is not detected; and

making a temperature of the lower die and that of the upper die closer to each other to bake the ingredients,

wherein the die having the greater mass is heated by its respective electric heater at a maximum rated consumed power of the electric heater, consumed power of the electric heater that heats the die having the smaller mass is controlled to become smaller than the maximum rated consumed power based on temperature information detected about the die having the greater mass, thereby preventing the die having the smaller mass from rising in temperature and making the temperature of the lower die and that of the upper die closer to each other.

2. The method of claim 1 wherein the mass of the lower die is greater than that of the upper die.

3. The method of claim 2 wherein consumed power of the electric heater that heats the upper die is preset to get smaller stepwise from the rated power such that one consumed power value corresponding to the mass of the upper die is selected from a plurality of stepwise consumed power values corresponding to each reduction rate of the mass of the upper die to make the temperature of the upper die closer to that of the lower die.

4. The method of claim 1 wherein the consumed power of the electric heater that heats the die having the smaller mass is controlled according to a previously determined relation between consumed power and temperature of the electric heater of the die having the smaller mass.

5. An electric cooker comprising:

a lower housing;

a lower die on an upper surface of the lower housing;

an upper housing mounted to pivot upward with respect to the lower housing;

an upper die on a lower surface of the upper housing, a lower surface of the upper die covering an upper surface of the lower die, wherein the upper and lower dies have different masses such that one of the upper and lower dies has a greater mass and the other of the upper and lower dies has a smaller mass;

a temperature sensor that detects a temperature of the die having the greater mass;

a lower electric heater disposed in the lower housing to heat the lower die;

an upper electric heater disposed in the upper housing to heat the upper die and having a rated power the same as that of the lower electric heater; and

a heater power control device connected at one side to the temperature sensor and at the other side to the die having the smaller mass, of which temperature is not detected, thereby controlling consumed power of the electric heater heating the die having the smaller mass, of which temperature is not detected and making a temperature of the lower die and that of the upper die closer to each other,

wherein the die having the greater mass is heated by its respective electric heater at a maximum rated consumed power of the electric heater, consumed power of the electric heater that heats the die having the smaller mass is controlled by the heater power control device to become smaller than the maximum rated consumed power based on temperature information detected about the die having the greater mass, thereby preventing the die having the smaller mass from rising in temperature and making the temperature of the lower die and that of the upper die closer to each other.

6. The electric cooker of claim 5 wherein the mass of the lower die is greater than that of the upper die.

7. The electric cooker of claim 6 further comprising a plurality of preset switches connected to the heater power control device and each having a different consumed power, one of the preset switches being selected to reduce the temperature of the upper die and making the temperature of the upper die closer to that of the lower die to bake the ingredients uniformly.

8. The electric cooker of claim 6 , further comprising a semiconductor switch connected to the heater power control device at one side and the upper die at the other side, an ON signal for turning on AC voltage and an OFF signal for turning off AC voltage being sent from the heater power control device to the semiconductor switch that controls the consumed power of the electric heater of the upper die by adjusting a ratio of the ON signal to the OFF signal.

9. The electric cooker of claim 6 wherein the temperature sensor is in contact with the lower die.

10. The electric cooker of claim 5 wherein the consumed power of the electric heater that heats the die having the smaller mass is controlled by the heater power control device according to a previously determined relation between consumed power and temperature of the electric heater of the die having the smaller mass, thereby making the temperature of the lower die and that of the upper die closer to each other.