Ventilation device for a motor vehicle heat exchange module with air guides for guiding the air flow passing through the air manifolds

Abstract

A ventilation device (2) for generating an air flow through a motor vehicle heat exchanger (1) is disclosed. The ventilation device (2) includes a plurality of ducts (8), at least one air manifold (12) including at least one air flow inlet (131; 132) and ports, each duct (8) opening at one of the ends thereof into a port (14) separate from the air manifold (12), where the air manifold (12; 100; 200; 300; 400; 500) is provided with air guides (104, 402) configured to guide the air flow passing through the air manifold (12; 100; 200; 300; 400; 500).

1 . A ventilation device configured to generate a flow of air through a motor vehicle heat exchanger, the ventilation device comprising:
 a plurality of ducts;   at least one air manifold including at least one air flow inlet and ports, each duct opening at one of the ends thereof into a port separate from the air manifold, each duct having at least one opening for the passage of a flow of air through said duct, the opening being separate from the ends of the corresponding duct, the opening being situated outside the at least one air manifold,   wherein the at least one air manifold is provided with air guides configured to guide the flow of air passing through the air manifold.   
     
     
         2 . The ventilation device as claimed in  claim 1 , in which the air guides comprise means for distributing the flow of air entering the manifold via said at least one air flow inlet toward the ports. 
     
     
         3 . The ventilation device as claimed in  claim 2 , in which the distribution means include partitions inside the at least one air manifold. 
     
     
         4 . The ventilation device as claimed in  claim 3 , in which, for each air manifold:
 the number of partitions is zero if the ratio of the area of the inlet of the manifold to the total area of the ports is greater than 1.5, and/or   the number of partitions is equal to three if the ratio of the area of the inlet of the manifold to the total area of the ports is between 1 and 1.5 inclusive; and/or   the number of partitions is equal to 5 or more when the ratio of the area of the inlet of the manifold to the total area of the ports is less than 1.   
     
     
         5 . The ventilation device as claimed in  claim 2 , in which at least one partition extends, in the vicinity of the air flow inlet, in a first direction, said at least one partition extends, in the vicinity of the ports, in a second direction, and the first and second directions are substantially perpendicular. 
     
     
         6 . The ventilation device as claimed in  claim 1 , in which the air guides comprise, in the vicinity of the ports, deflectors adapted to deviate the flow of air to the vicinity of the ports, so that the flow of air passing through the ports is directly substantially in a direction normal to the section of the ports. 
     
     
         7 . The ventilation device as claimed in  claim 6 , in which each deflector is rectilinear, partly rectilinear or curved. 
     
     
         8 . The ventilation device as claimed in  claim 6 , in which the deflectors are in one piece with the at least one air manifold. 
     
     
         9 . The ventilation device as claimed in  claim 2 , in which at least one partition and/or at least one deflector include(s) an electrically conductive material. 
     
     
         10 . The ventilation device as claimed in, in which each duct has, over at least one portion, a geometrical section comprising:
 a leading edge;   a trailing edge opposite the leading edge;   first and second profiles, each extending between the leading edge and the trailing edge,   said at least one opening of the duct being on the first profile, said at least one opening being configured so that the ejected flow of air flows along at least a portion of the first profile.   
     
     
         11 . The ventilation device as claimed in  claim 1 , in which each duct has, over at least one portion, a geometrical section comprising:
 a leading edge;   a trailing edge opposite the leading edge;   first and second profiles each extending between the leading edge and the trailing edge,   at least one opening of the duct being configured on the first profile so that the ejected flow of air flows along at least a portion of the first profile and at least one opening of the duct being configured on the second profile so that the ejected flow of air flows along at least a portion of the second profile.   
     
     
         12 . A motor vehicle heat-exchange module comprising:
 a heat exchanger, the heat exchanger including a plurality of tubes,   termed heat-exchange tubes, in which a fluid is intended to circulate; and   a ventilation device adapted to generate a flow of air toward the heat-exchange tubes, the ventilation device comprising:
 a plurality of ducts, 
 at least one air manifold including at least one air flow inlet and ports, each duct opening at one of the ends thereof into a port separate from the air manifold, each duct having at least one opening for the passage of a flow of air through said duct, the opening being separate from the ends of the corresponding duct, the opening being situated outside the at least one air manifold, 
 wherein the at least one air manifold is provided with air guides configured to guide the flow of air passing through the air manifold.