Patent ID: 7755005

Claim:
A combination oven capable of preparing food product, the combination oven comprising: a heating cavity configured to prevent air inside the heating cavity from being in direct communication with air outside the oven; a drain assembly configured to drain liquids from the heating cavity while preventing gasses from escaping from the heating cavity when a heating cavity pressure is below a threshold pressure; a first food preparation assembly configured to prepare food product using steam and at least one of radiating heat and forced air convection; a smoking assembly configured to selectively deliver smoke into the heating cavity independent of the first food preparation assembly wherein the drain assembly comprises a tank configured to hold water at a water level; a first conduit extending from the heating cavity and terminating below the water level, the first conduit configured to drain liquids from the heating cavity to the tank and further configured to allow gasses to flow from the heating cavity to the tank; and a second conduit having an opening positioned above the water line, the second conduit configured to allow gasses to escape from the tank when the heating cavity pressure is above the threshold pressure.