Microwave oven with resistance heating unit

摘要

A microwave oven has a cooking chamber provided with a microwave window covered by a glass-ceramic plate with the interposition of a seal. A microwave connecting housing adjoins the window externally of the cooking chamber. A microwave generating and guiding device bounds at least in part the space defined by the connecting housing for directing microwave energy into the cooking chamber. Further, an electric resistance heater is arranged in the cooking chamber. There are provided air inlet openings communicating with the space defined by the connecting housing for introducing pressurized air thereinto, whereby an air pressure is generated in the connecting housing for preventing cooking vapors and the like from reaching and soiling microwave generating and guiding components.