Air management system

Abstract

This air management system ( 2 ) comprises at least one heat exchanger ( 4, 6 ), at least one fan ( 8, 10 ), and a supporting structure ( 16 ) carrying said at least one exchanger ( 4, 6 ) and fan ( 8, 10 ). The air management system ( 2 ) further comprises a check valve ( 18 ) superimposed to the fan ( 8, 10 ), the check valve ( 18 ) being formed by blades ( 180 ) which are movable between a closed position, in which the fan ( 8, 10 ) is covered, and an open position, in which the fan ( 8, 10 ) is uncovered.

What is claimed is: 
     
         1 . Air management system ( 2 ) comprising at least one heat exchanger ( 4 ,  6 ), at least one fan ( 8 ,  10 ), and a supporting structure ( 16 ) carrying said at least one exchanger ( 4 ,  6 ) and fan ( 8 ,  10 ), wherein the air management system ( 2 ) further comprises a check valve ( 18 ) located above the fan ( 8 ,  10 ), the check valve ( 18 ) being formed by blades ( 180 ) which are movable between a closed position, in which the fan ( 8 ,  10 ) is covered ( 2 ), and an open position, in which the fan ( 8 ,  10 ) is uncovered. 
     
     
         2 . Air management system according to  claim 1 , wherein the movement of the blades ( 180 ) from their closed position to their open position is triggered by the starting of the fan ( 8 ,  10 ), and the movement of the blades ( 180 ) from their open position to their closed position is triggered by the switching off of the fan ( 8 ,  10 ). 
     
     
         3 . Air management system according to  claim 1 , wherein in closed position, each blade ( 180 ) partially covers an adjacent blade. 
     
     
         4 . Air management system according to  claim 1 , wherein the blades ( 180 ) are made from sheet metal. 
     
     
         5 . Air management system according to  claim 1 , wherein the blades
 ( 180 ) are made from a plastic material.   
     
     
         6 . Air management system according to  claim 1 , wherein the blades ( 180 ) form, in closed position, a circular cover corresponding to the shape of an opening ( 160 ) of the supporting structure ( 16 ) in which the fan ( 8 ,  10 ) is positioned. 
     
     
         7 . Air management system according to  claim 1 , wherein each blade ( 180 ) is formed by an angular sector of disc. 
     
     
         8 . Air management system according to  claim 1 , wherein the blades ( 180 ) are parallel to a central rotation axis (X) of the fan ( 8 ,  10 ) in their open position. 
     
     
         9 . Air management system according to  claim 1 , wherein each blade ( 180 ) is movable in rotation around a longitudinal axis (Y 180 ) extending in a radial plane with respect to a central rotation axis (X) of the fan ( 8 ,  10 ). 
     
     
         10 . Air management system according to  claim 9 , wherein each blade ( 180 ) is movable in rotation around a longitudinal axis (Y 180 ) perpendicular to the central rotation axis (X) of the fan ( 8 ,  10 ). 
     
     
         11 . Air management system according to  claim 1 , wherein each blade ( 180 ) is movable in rotation around an axis (Z 180 ) tangent to an outer circular edge ( 180   a ) of each blade ( 180 ). 
     
     
         12 . Air management system according to  claim 1 , wherein the blades ( 180 ) form a truncated cone in closed position. 
     
     
         13 . Air management system according to  claim 1 , wherein in closed configuration, the check valve ( 18 ) does not increase the overall dimension of the air management system ( 2 ) by more than 0 to 5 percent of the overall height (H) of the air management system ( 2 ). 
     
     
         14 . Air management system according to  claim 13 , wherein in their closed position, the blades ( 180 ) do not protrude from a top edge ( 160   a ) of an opening ( 160 ) of the supporting structure ( 16 ) in which the fan ( 8 ,  10 ) is positioned.