Patent ID: 7642488
Filing Date: 2010-01-05
Classification: F24C,H05B

Abstract:
1. An electric oven comprising: a cooking cavity surrounded by an inner case and being openable by a door; a first heater for heating the cooking cavity; at least one supplemental heater for heating the cooking cavity; and a controller operating the first heater to generate heat when starting cooking and selectively operating the at least one supplemental heater during cooking, wherein the first heater is located over the cooking cavity, wherein the controller selectively operates the supplemental heater based on a temperature of the first heater or based on a temperature of the cooking cavity, and wherein the controller operates the at least one supplemental heater when a rising rate of the temperature of the first heater or the temperature of the cooking cavity in a time period fails to reach a preset rate value, and the controller stops operating the at least one supplemental heater when the rising rate of the temperature of the first heater or the temperature of the cooking cavity reaches the preset rate value.