Self-clean oven
AssigneeRaytheon Company
InventorsWayne T. Kemp, Domenick Saponara
Life of this patent
Estimating the term…
Abstract
A self-clean oven having means for passing cooling air over the heated walls of the oven and further having means for supplying combustion air by normal inspiration to the oven burners independently of the flow of cooling air, and having still further means for mixing hot combustion products exhausted from the interior of the oven with exhausted cooling air to prevent passage of excessively hot air into the atmosphere.
Claims10
An oven comprising the combination of an oven compartment having top, bottom, back and side walls, a first burner in the oven compartment, an air chamber enclosing said top, bottom, back and side walls of the oven compartment, said air chamber having entrance opening at the front of the oven below the oven compartment and an exit aperture at the front of the oven above the oven compartment, an air cavity located beneath the oven compartment between the oven compartment and adjacent portions of said air chamber, said air cavity having apertured walls separating it from the adjacent portions of the air chamber, a burner box located between said bottom of said compartment and said air cavity, a second burner positioned in said burner box, a first duct located between said burner box and said air cavity, said first duct communicating with said burner box through a plurality of holes in the floor of said burner box for providing secondary combustion air to said second burner, a second duct located within said air chamber and extending from said entrance opening beneath said air cavity and upwardly along the back walls of said air cavity and compartment, said first and second burners extending into said second duct through respective apertures in said back wall of said compartment and the back wall of said burner box for receiving primary combustion air, said first duct communicating with said second duct for receiving said secondary combustion air, a plurality of blowers mounted on side walls of said air cavity for drawing in cooling air from said air chamber below said air cavity and for forcing said cooling air into said air chamber at the sides and back of said air cavity, said cooling air being substantially isolated from said primary and secondary air.
A built-in self-cleaning oven comprising the combination of an oven compartment having top, bottom, back and side walls, a broil burner located in an upper portion of the oven compartment, a bake burner located in a lower portion of the oven compartment, an air cavity beneath the bottom wall of the oven compartment and having back, bottom and side walls, an air chamber enclosing the backs and sides of the oven compartment and the air cavity, the bottom wall of the air cavity and the top wall of the oven compartment, an oven shelf above the bake burner, an apertured duct beneath the bake burner, a combustion air duct within the air chamber and extending beneath the air cavity and upwardly along the back walls of the air cavity and oven compartment, said burners being connected with said air duct to receive primary combustion air therefrom, said apertured duct being connected with the combustion air duct to receive therefrom secondary combustion air for the bake burner, an exhaust duct in the portion of the air chamber above the oven compartment, an opening in the top wall of the oven compartment communicating with said exhaust duct, the broil burner being located in the oven compartment at said opening whereby combustion products being exhausted from the oven compartment will be incinerated by said broil burner, and a blower mounted in said air cavity for drawing in cooling air from said air chamber through holes in said bottom wall of said air cavity and for generating a flow of cooling air upwardly through said air chamber enclosing said sides and backs respectively of said air cavity and said compartment, said cooling air being substantially isolated from said primary and secondary combustion air.
Dependencies are inferred from the claim text.