Cooling and exhaust system for a cooking oven

Abstract

The present invention relates to a cooling and exhaust system ( 10 ), in particular for a cooking oven, comprising a fan shroud ( 12 ) and a discharging channel ( 14 ). An impeller ( 16 ) is arranged inside the fan shroud ( 12 ), so that the fan shroud ( 12 ) and the impeller ( 16 ) form a cross-flow fan. The discharging channel ( 14 ) is attached at the fan shroud ( 12 ) and arranged at the circumferential side of the impeller ( 16 ). The discharging channel ( 14 ) includes an open end arranged opposite to the fan shroud ( 12 ). The discharging channel ( 14 ) extends along a horizontal direction. A first inlet ( 20 ) is arranged in an upper portion of the fan shroud ( 12 ), while a second inlet ( 22 ) is arranged in a lower portion of the fan shroud ( 12 ). The first inlet ( 20 ) and the second inlet ( 22 ) are arranged at or close to opposite circumferential sides of the impeller ( 16 ). An outlet ( 24 ) is arranged at the open end of the discharging channel ( 14 ). Further, the present invention relates to a cooking oven with a cooling and exhaust system ( 10 ).

1 . A cooling and exhaust system, in particular for a cooking oven, comprising a fan shroud and a discharging channel, wherein
 an impeller is arranged inside the fan shroud, so that the fan shroud and the impeller form a cross-flow fan,   the discharging channel is attached at the fan shroud and arranged at the circumferential side of the impeller,   the discharging channel includes an open end arranged opposite to the fan shroud,   the discharging channel extends along a horizontal direction,   a first inlet is arranged in an upper portion of the fan shroud,   a second inlet is arranged in a lower portion of the fan shroud,   the first inlet and the second inlet are arranged at or close to opposite circumferential sides of the impeller, and   an outlet is arranged at the open end of the discharging channel.   
     
     
         2 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   the first inlet is arranged above the discharging channel.   
     
     
         3 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   the direction of an air stream through the first inlet is opposite to the direction of the air stream inside the discharging channel.   
     
     
         4 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   the direction of an air stream through the second inlet is the same as the direction of the air stream inside the discharging channel.   
     
     
         5 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   a bottom side of the fan shroud is at least partially open, wherein a portion of said bottom side is closed or closable by a base plate, and wherein the base plate is a part of the cooling and exhaust system or of the cooking oven.   
     
     
         6 . The cooling and exhaust system according to  claim 5 ,
 characterized in that   the position of the base plate is variable, so that an air stream through the cooling and exhaust system follows a path defined by the geometry of the cooling and exhaust system in a predetermined manner.   
     
     
         7 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   the flow of the air stream through the first inlet is bigger than the flow of the air stream through the second inlet.   
     
     
         8 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   an exhaust pipe is arranged in the bottom of the discharging channel so that the discharging channel is connected or connectable to an oven cavity of the cooking oven.   
     
     
         9 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   the impeller is driven by an electric motor energized by alternating or direct current.   
     
     
         10 . The cooling and exhaust system according to  claim 1 ,
 characterized in that   the sum of the air streams through the first inlet and the second inlet is equal to the air stream through the outlet.   
     
     
         11 . A cooking oven with a cooling and exhaust system,
 characterized in that   the cooking oven comprises the cooling and exhaust system according to  claim 1 .   
     
     
         12 . The cooking oven according to  claim 11 ,
 characterized in that   the first inlet is provided for sucking air from an upper front portion of the cooking oven.   
     
     
         13 . The cooking oven according to  claim 12 ,
 characterized in that   the first inlet is provided for sucking air from a space around a control panel of the cooking oven.   
     
     
         14 . The cooking oven according to  claim 11 ,
 characterized in that   the second inlet is provided for sucking air from the rear side of an oven cavity of the cooking oven.   
     
     
         15 . The cooking oven according to  claim 11 ,
 characterized in that   a bottom side of the fan shroud is at least partially open, wherein a portion of said bottom side is closed or closable by a base plate, wherein the base plate is arranged above an oven cavity of the cooking oven.