Patent ID: 6399930
Filing Date: 2002-06-04
Classification: H05B

Abstract:
A combination oven for cooking a food product with microwave energy and hot air comprising:a cooking chamber and a plenum disposed in a side wall of said cooking chamber such that said plenum is in fluid communication with said cooking chamber via an air egress port area and an air ingress port area disposed in a side wall thereof; a source of energy, which is capable of introducing said microwave energy into said cooking chamber; a food rack capable of holding said food product within said cooking chamber; and means for heating and circulating an airflow through said cooking chamber and said plenum to develop a laminar airflow pattern in said cooking chamber, wherein said laminar airflow pattern has a first laminar air stream that is above said food rack and a second laminar air stream that is below said food rack, wherein at least one of said first and second laminar air streams has first and second loops that share a common path toward said air egress port area, and wherein said ingress port area comprises an upper port area and a lower port area that are separated from one another such that said first and second laminar air streams circulate substantially through said upper and lower port areas, respectively.