Patent ID: 9107422
Filing Date: 2015-08-18
Classification: A21B,A23L,A23V,F24C

Abstract:
1. An improved air flow system for heating a food product being conveyed on a spiraled cook belt through a cooking chamber of a spiral oven, the improvement comprising: a forward/reversing fan arranged above and concentric to the spiraled cook belt, the forwarding/reversing fan having plurality of fan blades and a braking resistor and producing a first airflow in a first rotational direction flowing between an upper and lower portion of the cooking chamber and a second airflow in a second rotational direction flowing between the upper and lower portion of the cooking chamber; a temperature probe in communication with a temperature control loop and a burner, the temperature control loop controlling an output of the burner; and means for limiting the burner output during a transition between the first airflow and the second airflow, the limiting means temporarily preventing the temperature control loop from controlling the burner output until an airflow over the temperature probe has re-stabilized; wherein the first rotational direction is vertically downward along and in contact with an inside edge of the cook belt, laterally across the cook belt from the inside edge to an outside edge of the cook belt, and vertically upward along and in contact with the outside edge of the cook belt, the second rotational direction being inverted relative to that of the first rotational direction.