Combined oven for microwave and electrical resistance heating operation

摘要

A combined oven for microwave and electrical resistance heating operation, which is equipped with a device for pyrolytic cleaning of the heating chamber (1) and a cooling air system for the electrical components, and in which the heating chamber (1) is provided with an injection opening, covered by a glass-ceramic plate (6), and, fitted outside the injection opening, there is an injection body (5) which is connected to a radio-frequency generator (9) and has an air inlet region which is connected to the cooling air system, and an air outlet region (15). In order to improve the field distribution inside the heating chamber (1), a field distribution element (10), which can rotate, is accommodated in the injection body (5), which field distribution element is placed on a bearing journal (12) having a bearing tip (12') like a cone, and an electrically controlled flap (16) is allocated to the air outlet region (15) in the injection body (5). <IMAGE>