Patent ID: 7928344
Filing Date: 2011-04-19
Classification: F24C,H05B

Abstract:
1. An apparatus for monitoring a hot surface of a cooking apparatus, the apparatus comprising: a heater configured to emit heat, the heater to define a maximum temperature that can be obtained based on a power level thereof; a display unit that includes an LED or an LCD device for displaying a state of a hot surface of a hot plate and an operation error of the hot plate; a temperature detecting sensor provided close to the heater to detect a heater temperature greater than a set temperature; and a microprocessor for controlling displaying of the display unit and to provide a hot surface alarm that the hot surface of the hot plate is in a hot state when the temperature detecting sensor detects that the heater temperature is greater than the set temperature, wherein the microprocessor determines the operation error of the hot plate when a calculated cooling time is greater than a set time and the hot surface alarm is not provided, the cooling time being a calculated time period in a state where the heater is not powered, and the set time being greater than zero, wherein the cooling time is a value calculated by: