Extractor hood for professional ovens for cooking food

Abstract

The present invention relates to a extractor hood for professional ovens for cooking food, of the type comprising a box-like containment body for a motorized fan adapted to aspirate by means of a front inlet, and one or more rear inlets, said rear inlet being shaped to convey hot and humid exhaust gases to a labyrinth with cold walls which is interposed between said rear inlets and said fan, said extractor hood being characterized in that said cold walls have an internal containment cavity for cooling water, and at the upper edge of each outer cooling surface multiple side-by-side holes or through openings, or a single longitudinal opening for the outflow of said cooling water are defined, provided below the cool walls are means for collecting and diverting said water and the condensation that has formed towards a discharge duct.

1 . An extractor hood ( 10 ) for professional ovens for cooking food, of the type comprising a box-like containment body ( 11 ) for a motorized fan ( 12 ) adapted to aspirate through a front inlet ( 13 ), and one or more rear inlets ( 14 ,  15 ), said rear inlets ( 14 ,  15 ) being shaped to convey hot and humid exhaust gases to a labyrinth for cooling and dehumidification ( 16 ) with cold walls ( 17 ,  18 ), which is interposed between said rear inlets ( 14 ,  15 ) and said fan ( 12 ), said extractor hood being characterized in that said cold walls ( 17 ,  18 ) have an internal containment cavity ( 19 ,  20 ) for cooling water, and at the upper edge of each outer cooling surface ( 21 ,  22 ,  23 ,  24 ) there being multiple side-by-side holes ( 25 ,  26 ) or through openings, or a single longitudinal opening, for the outflow of said cooling water, below said cold walls there being means for collecting and diverting said water and the condensation that has formed toward a discharge duct ( 27 ). 
     
     
         2 . The extractor hood according to  claim 1 , characterized in that said rear inlets ( 14 ,  15 ) are constituted by a corresponding number of sleeves for connection to a corresponding number of rising pipes for the hot and humid exhaust gases that exit from corresponding vent stacks, for example of a professional oven, said sleeves conveying the exhaust gases directly into the cooling and dehumidification labyrinths ( 16 ). 
     
     
         3 . The extractor hood according to  claim 1 , characterized in that said cooling and dehumidification labyrinth ( 16 ) is constituted by a box-like container ( 28 ) inside which there is a winding path formed by a series of substantially equidistant side-by-side walls ( 29 ,  30 ,  17 ,  31 ,  18 ,  32 ) that are arranged alternately so as to allow the passage of the exhaust gases above or below a wall, at least one of the central walls being one of said cold walls ( 17 ,  18 ), as clearly visible in  FIG. 4 . 
     
     
         4 . The extractor hood according to the preceding claim, characterized in that each one of said cold walls ( 17 ,  18 ) comprises an enclosure made of bent sheet metal, provided with a water inlet hole ( 33 ,  34 ) at which a delivery pipe ( 35 ,  36 ) is interconnected. 
     
     
         5 . The extractor hood according to the preceding claim, characterized in that said delivery pipes ( 35 ,  36 ) receive the cooling water from an electric valve ( 37 ) with a pipe and a two-way union ( 38 ). 
     
     
         6 . The extractor hood according to the preceding claim, characterized in that the electric valve ( 37 ) is controlled by a temperature sensor ( 39 ), visible in  FIG. 2 , which measures the temperature inside the cold walls ( 17 ,  18 ). 
     
     
         7 . The extractor hood according to  claim 1 , characterized in that said means for collecting and diverting the cooling water and the condensation that has formed toward a discharge duct ( 27 ) comprise an inclined bottom ( 40 ) of the box-like container ( 28 ) of the labyrinth ( 16 ), which diverts the water that descends by sliding along the outer surfaces of the walls, as well as the precipitated condensation, toward the discharge duct ( 27 ).