Wall oven cooling system

Abstract

A cooking oven includes a first heatable oven chamber, a second heatable oven chamber below the first oven chamber. A cooling plenum is located above the first oven chamber including a suction portion to supply cool air and an exhaust portion to discharge heated air. A cooling fan produces a primary cooling airflow through the cooling plenum. An electronic device is located at least partially within the cooling plenum and in flow communication with the heated air. A bypass element is located within the cooling plenum that at least partially surrounds the electronic device to divert the heated air away from the electronic device. In one example, the cooling fan produces a secondary cooling airflow through a vertical channel at the rear of the cooking oven. In another example, a second cooling plenum is located above the second oven chamber.

1 . A cooking oven, comprising:
 a first heatable oven chamber defined in part by a first rear wall;   a housing enclosing the first oven chamber, the housing comprising a top panel and a rear panel;   a cooling plenum located above the first oven chamber and below the top panel of the housing, comprising a suction portion with a suction inlet configured to supply cool air from an outside area and an exhaust portion with an exhaust outlet configured to discharge heated air to said outside area;   a cooling fan that produces a primary cooling airflow through the cooling plenum;   an electronic device located at least partially within the cooling plenum and in flow communication with the heated air; and   a bypass element located within the cooling plenum that at least partially surrounds the electronic device to divert the heated air away from the electronic device.   
     
     
         2 . The cooking oven of  claim 1 , further comprising a vertical channel located between the rear panel of the housing and the first rear wall of the first oven chamber. 
     
     
         3 . The cooking oven of  claim 2 , wherein the cooling fan produces a secondary cooling airflow through the vertical channel that is directed into a space located above the cooling plenum and below the top panel of the housing. 
     
     
         4 . The cooking oven of  claim 3 , wherein the bypass element is located within the exhaust portion and encircles the electronic device such that substantially all of the heated air is diverted away from the electronic device. 
     
     
         5 . The cooking oven of  claim 4 , wherein the bypass element comprises an open top in flow communication with said space located above the cooling plenum, and an open bottom in flow communication with the suction portion, such that the secondary cooling airflow is in flow contact with the electronic device. 
     
     
         6 . The cooking oven of  claim 5 , wherein at least one hole extends through a wall of the cooling plenum and is in flow communication with the open bottom of the bypass element, such that the secondary cooling airflow flows through the bypass element and into the suction portion. 
     
     
         7 . The cooking oven of  claim 3 , further comprising an auxiliary inlet extending through the top panel of the housing, wherein the cooling fan causes an auxiliary cooling airflow through the auxiliary inlet and into said space located above the cooling plenum and below the top panel of the housing. 
     
     
         8 . The cooking oven of  claim 1 , wherein the cooling fan is a cross-flow fan. 
     
     
         9 . The cooking oven of  claim 1 , further comprising a first door pivotally mounted to the first oven chamber to selectively close the first oven chamber from said outside area, wherein the first door comprises an inner pane facing the first oven chamber, an outer pane facing the outside area, and a door cavity provided between the inner and outer panes, wherein the door cavity further comprises a cavity inlet about a bottom of the first door and a cavity outlet about a top of the first door. 
     
     
         10 . The cooking oven of  claim 9 , wherein the cavity outlet is adjacent the suction inlet of the cooling plenum, such that the cooling fan causes the primary cooling airflow from the outside area that is at a location below the first door to enter the cavity inlet, flow through the door cavity, exit the cavity outlet, and then flow into the cooling plenum. 
     
     
         11 . The cooking oven of  claim 9 , further comprising a second heatable oven chamber defined in part by a second rear wall and disposed at an elevation vertically below the first oven chamber, and a second door pivotally mounted to the second oven chamber to selectively close the second oven chamber from the outside area, a second cooling plenum located above the second oven chamber and below the first oven chamber; and a second cooling fan that produces a second oven cooling airflow through the second cooling plenum. 
     
     
         12 . The cooking oven of  claim 11 , wherein the second door comprises an inner pane facing the second oven chamber, an outer pane facing the outside area, and a second door cavity provided between the inner and outer panes, wherein the second cooling fan causes the second oven cooling airflow from the outside area that is at a location below the second door to flow through the second door cavity and then flow into the second cooling plenum. 
     
     
         13 . A cooking oven, comprising:
 a first heatable oven chamber defined in part by a first rear wall;   a first door pivotally mounted to the first oven chamber to selectively close the first oven chamber from an outside area;   a second heatable oven chamber defined in part by a second rear wall and disposed at an elevation vertically below the first oven chamber;   a second door pivotally mounted to the second oven chamber to selectively close the second oven chamber from the outside area;   a housing enclosing the first oven chamber, the housing comprising a top panel and a rear panel;   a first cooling plenum located above the first oven chamber comprising a suction portion with a suction inlet configured to supply cool air from said outside area and an exhaust portion with an exhaust outlet configured to discharge heated air to said outside area;   a first cooling fan that produces a primary cooling airflow through the first cooling plenum;   a second cooling plenum located above the second oven chamber and below the first oven chamber, the first and second cooling plenums being independent;   a second cooling fan that produces a second oven cooling airflow through the second cooling plenum;   an electronic device located at least partially within the cooling plenum and in flow communication with the heated air; and   a bypass element located within the cooling plenum that at least partially surrounds the electronic device to divert the heated air away from the electronic device.   
     
     
         14 . The cooking oven of  claim 13 , further comprising a vertical channel located between the rear panel of the housing and the first rear wall of the first oven chamber, and wherein the cooling fan produces a secondary cooling airflow through the vertical channel that is directed into a space located above the cooling plenum and below the top panel of the housing. 
     
     
         15 . The cooking oven of  claim 13 , further comprising an auxiliary inlet extending through the top panel of the housing, wherein the cooling fan causes an auxiliary cooling airflow through the auxiliary inlet and into a space located above the cooling plenum and below the top panel of the housing. 
     
     
         16 . The cooking oven of  claim 13 , wherein the suction portion and the exhaust portion of the first cooling plenum are arranged in a vertically stacked arrangement separated by a common wall, and wherein the suction inlet and the exhaust outlet are both arranged at a front of the cooking oven for communication with said outside area, and wherein the first cooling fan is arranged at a rear of the cooking oven. 
     
     
         17 . The cooking oven of  claim 16 , wherein an inlet of the first cooling fan is coupled to the suction portion and an outlet of the first cooling fan is coupled to the exhaust portion to provide flow communication through the first cooling plenum. 
     
     
         18 . The cooking oven of  claim 17 , further comprising an air diverter in an at least partially covering relationship over the inlet of the first cooling fan such that the inlet of the first cooling fan is substantially limited to the suction portion of the first cooling plenum. 
     
     
         19 . A cooking oven, comprising:
 a first heatable oven chamber defined in part by a first rear wall;   a second heatable oven chamber defined in part by a second rear wall and disposed at an elevation vertically below the first oven chamber;   a housing enclosing the first oven chamber, the housing comprising a top panel and a rear panel;   a first cooling plenum located above the first oven chamber comprising a suction portion with a suction inlet configured to supply cool air from an outside area and an exhaust portion with an exhaust outlet configured to discharge heated air to said outside area, wherein the suction portion and the exhaust portion are arranged in a vertically stacked arrangement separated by a common wall;   a vertical channel located between the rear panel of the housing and the first rear wall of the first oven chamber;   a first cooling fan that produces a primary cooling airflow through the first cooling plenum along a first airflow path, and a secondary cooling airflow through the vertical channel;   an electronic device located at least partially within the exhaust portion of the cooling plenum and in flow communication with the heated air; and   a bypass element located within the exhaust portion of the cooling plenum that at least partially surrounds the electronic device to divert substantially all of the heated air away from the electronic device,   wherein the bypass element comprises an open top in flow communication with the vertical channel and an open bottom in flow communication with a hole extending through the common wall, such that the secondary cooling airflow flows through the bypass element and into the suction portion along a second airflow path that is arranged at an angle relative to the first airflow path.   
     
     
         20 . The cooking oven of  claim 19 , further comprising an auxiliary inlet extending through the top panel of the housing, wherein the first cooling fan causes an auxiliary cooling airflow through the auxiliary inlet that merges with the secondary cooling airflow to flow through the bypass element. 
     
     
         21 . The cooking oven of  claim 19 , wherein a first door comprises an inner pane facing the first oven chamber, an outer pane facing the outside area, and a door cavity provided between the inner and outer panes, wherein the first cooling fan causes the primary cooling airflow from the outside area that is at a location below the first door to flow through the door cavity and then flow into the first cooling plenum. 
     
     
         22 . The cooking oven of  claim 19 , further comprising a second door pivotally mounted to the second oven chamber to selectively close the second oven chamber from the outside area, a second cooling plenum located above the second oven chamber and below the first oven chamber; and a second cooling fan that produces a second oven cooling airflow through the second cooling plenum.