Patent ID: 8642928
Filing Date: 2014-02-04
Classification: A21B,F24C,H05B

Abstract:
1. A cooking appliance for cooking food items using multiple cooking techniques comprising: a cabinet; an oven cavity including top, bottom, rear and opposing side walls that collectively define a cooking chamber; a user interface for establishing a desired cooking operation for a food item placed in the oven cavity, with the desired cooking operation having an associated set point temperature; an oven rack supported in the cooking chamber, said oven rack being spaced from the bottom wall of the oven cavity; a radiant heating element positioned below the oven rack and above the bottom wall in the oven cavity; a convection heating system including: a first control system receiving temperature signals from the first temperature sensor and regulating operation of the radiant heating element; and a second control system receiving temperature signals from the second temperature sensor and regulating operation of the convection heating element, wherein the first and second control systems constitute an overall temperature control system for regulating a cooking temperature in the oven cavity based on the temperature signals, said control system functioning to provide: a) a heater power reduction at a predetermined level below the set point temperature, regardless of whether the cooking temperature is increasing or decreasing; and b) another heater power reduction depending on a threshold rate at which the cooking temperature is increasing when a predetermined level below the set point temperature is reached, but does not reduce heater power when the cooking temperature is decreasing through the predetermined level.