Abstract: The present invention provides a combination oven providing combination steam and convection cooking. The cooking cavity is heated by a heat exchanger system that includes at least one heat exchanger tube. Heat transfer along a length of the heat exchanger tube is facilitated by a heat conductive baffle substantially filling the interior of the heat exchanger tubes in volume and length. Heated gases are forced through the dense and elongated baffle to facilitate heat transfer to the walls of the heat exchanger tube.

Abstract: A combination oven using non-caustic detergent during a cleaning wash cycle, along with the addition of a catalyst regeneration cycle after a predefined number of cleaning wash cycles, can regenerate the catalyst to restore nearly full function of the catalyst and removes most occlusion of the pores of the catalyst that occurs during oven cooking and cleaning wash cycles. The catalyst regeneration cycle includes a rinse agent cycle followed by a high temperature dry out and burnout step.

Abstract: A cleaning system for an oven having shelves which provide for distributed jets of heated air, allows water accumulation within the shelves during cleaning by reducing airflow through the shelf, and then provides rapid expulsion of the water in cohesive streams after accumulation to provide high inertial cleaning.

Abstract: A cleaning system for an oven having shelves which provide for distributed jets of heated air, allows water accumulation within the shelves during cleaning by reducing airflow through the shelf, and then provides rapid expulsion of the water in cohesive streams after accumulation to provide high inertial cleaning.

Abstract: A modular oven includes a cabinet receiving separate modules with distinct cooking operations. Modules of the modular oven may provide any combination of convection cooking, steam cooking, impingement cooking, and high speed cooking. Therefore, the modules may be mixed and matched to suit the desired cooking operations. In some embodiments, improved steam cooking at lower cooking temperatures is provided by directing spraying water onto an independent heat source, controlled separately from the cavity heating element, within each cooking zone. By operating a separate heating element specifically for steam generation, there can be more accurate heat control of the cooking zones without overheating the cooking zones when steam is needed but when lower cooking temperatures (e.g., 211 degrees Fahrenheit and below) are desired.

Abstract: A modular oven includes a cabinet receiving separate modules with distinct cooking operations. Modules of the modular oven may provide any combination of convection cooking, steam cooking, impingement cooking, and high speed cooking. Therefore, the modules may be mixed and matched to suit the desired cooking operations. In some embodiments, improved steam cooking at lower cooking temperatures is provided by directing spraying water onto an independent heat source, controlled separately from the cavity heating element, within each cooking zone. By operating a separate heating element specifically for steam generation, there can be more accurate heat control of the cooking zones without overheating the cooking zones when steam is needed but when lower cooking temperatures (e.g., 211 degrees Fahrenheit and below) are desired.

Abstract: A cleaning system for an oven having shelves which provide for distributed jets of heated air, allows water accumulation within the shelves during cleaning by reducing airflow through the shelf, and then provides rapid expulsion of the water in cohesive streams after accumulation to provide high inertial cleaning.

Abstract: A modular oven provides an outer cabinet receiving independently removable modules for steam cooking and having a self-contained water source and drain receptacle for plumbing-less installation, each module controlled by a common controller.