Airflow system for a convection oven
First Claim
1. A cooking appliance comprising:
- an oven cavity having top, bottom, rear, and opposing side walls that collectively define a cooking chamber;
a door mounted for movement relative to the oven cavity for selectively closing the cooking chamber;
a convection fan for establishing a convection airflow within the cooking chamber, said convection fan having an innermost diametric portion and an outermost diametric portion;
a heating element for raising a temperature of the convection airflow, said heating element including first and second sections symmetrically disposed about the convection fan substantially parallel to and downstream of the convection fan, each of said first and second sections having at least three lobes and four 180°
turns, while establishing a thin profile heating unit; and
a convection fan cover including a main body portion having an inlet portion for receiving the convection airflow from the cooking chamber and an outlet portion for directing the convection airflow back into the cooking chamber, said inlet portion being juxtapose the convection fan and including a plurality of apertures which extend radially outward beyond the outermost diametric portion of the convection fan, said outlet portion including an angled louver and a trip edge portion which cooperate to alter a direction of the convection airflow from being substantially parallel to the main body portion to being substantially perpendicular to the main body portion.
1 Assignment
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Accused Products
Abstract
A convection cooking appliance includes a convection fan for establishing a convection airflow which is heated by a heating element including first and second sections that are symmetrically disposed about the convection fan substantially parallel to and downstream of the convection fan. Each of the first and second sections is formed so as to include at least three lobes and four 180° turns, while establishing a thin profile heating element. A convection fan cover extends across the convection fan and includes a main body portion having an outlet portion for directing the convection airflow into a cooking chamber of the appliance. The outlet portion includes an angled louver and a trip edge portion. The angled louver and trip edge portion cooperate to alter a direction of the convection airflow from being substantially parallel to the main body portion to being substantially perpendicular the main body portion.
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Citations
17 Claims
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1. A cooking appliance comprising:
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an oven cavity having top, bottom, rear, and opposing side walls that collectively define a cooking chamber; a door mounted for movement relative to the oven cavity for selectively closing the cooking chamber; a convection fan for establishing a convection airflow within the cooking chamber, said convection fan having an innermost diametric portion and an outermost diametric portion; a heating element for raising a temperature of the convection airflow, said heating element including first and second sections symmetrically disposed about the convection fan substantially parallel to and downstream of the convection fan, each of said first and second sections having at least three lobes and four 180°
turns, while establishing a thin profile heating unit; anda convection fan cover including a main body portion having an inlet portion for receiving the convection airflow from the cooking chamber and an outlet portion for directing the convection airflow back into the cooking chamber, said inlet portion being juxtapose the convection fan and including a plurality of apertures which extend radially outward beyond the outermost diametric portion of the convection fan, said outlet portion including an angled louver and a trip edge portion which cooperate to alter a direction of the convection airflow from being substantially parallel to the main body portion to being substantially perpendicular to the main body portion.
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2. A cooking appliance comprising:
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an oven cavity having top, bottom, rear, and opposing side walls that collectively define a cooking chamber; a door mounted for movement relative to the oven cavity for selectively closing the cooking chamber; a convection fan for establishing a convection airflow within the cooking chamber; a heating element for raising a temperature of the convection airflow, said heating element including first and second sections symmetrically disposed about the convection fan substantially parallel to and downstream of the convection fan, each of said first and second sections having at least three lobes and four 180°
turns, while establishing a thin profile heating unit; anda convection fan cover including a main body portion having an inlet portion for receiving the convection airflow from the cooking chamber and an outlet portion for directing the convection airflow back into the cooking chamber. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. A cooking appliance comprising:
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an oven cavity having top, bottom, rear, and opposing side walls that collectively define a cooking chamber; a door mounted for movement relative to the oven cavity for selectively closing the cooking chamber; a convection fan for establishing a convection airflow within the cooking chamber, said convection fan having an innermost diametric portion and an outermost diametric portion; a heating element for raising a temperature of the convection airflow; and a convection fan cover including a main body portion having an inlet portion for receiving the convection airflow from the cooking chamber and an outlet portion for directing the convection airflow back into the cooking chamber, said outlet portion including an angled louver and a trip edge portion which cooperate to alter a direction of the convection airflow from being substantially parallel to the main body portion to being substantially perpendicular to the main body portion. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification