Air circulation system

Abstract

The present invention refers to an air circulation system, particularly intended to be applied in household appliances of refrigerator type, comprising the innovative technical and functional features, which are capable of improving air flow circulation inside these apparatuses as well as optimizing the space occupied by the fan. More preferably, the present invention refers to an air flow circulation system comprising a refrigerating equipment (R) containing at least one air passage channel (A), within which there is a radial fan ( 1 ) disposed in a inclined form at an angle (a) so as to divide said air passage channel (A) in a suction duct ( 2 ) and sprinkling duct ( 3 ).

1 - 8 . (canceled) 
     
     
         9 . Air flow circulation system, comprising a refrigerating equipment (R) provided with at least an air passage channel (A), within which a fan ( 1 ) is disposed, said system wherein said fan ( 1 ) is of radial type and inclined at an angle (α), dividing said air passage channel (A) into two ducts, a suction duct ( 2 ) and a sprinkling duct ( 3 ), the system being characterized in that:
 a wall of an outer box (E) of said refrigerating equipment (R) is provided with at least one recess ( 4 ) aligned with an inlet ( 5 ) of said fan ( 1 ); 
 the fan ( 1 ) is secured inside the air passage channel (A) by fixing its structure ( 6 ), wherein a lower end ( 7 ) is secured only onto a wall of an inner box (C) while an upper end ( 8 ) is adjustably secured between the walls of said inner box (C) and outer box (E). 
 
     
     
         10 . Air flow circulation system, in accordance with  claim 9 , characterized in that said structure ( 6 ) of fan ( 1 ) has a configuration whose motor ( 9 ) is disposed in a rear region of rotor ( 10 ) of the fan ( 1 ). 
     
     
         11 . Air flow circulation system, in accordance with  claim 9 , characterized in that said structure ( 6 ) of fan ( 1 ) comprises a configuration whose motor ( 9 ) is disposed in a front region of said rotor ( 10 ) of fan ( 1 ). 
     
     
         12 . Air flow circulation system, in accordance with  claim 9 , characterized in that said structure ( 6 ) of fan ( 1 ) comprises a configuration whose motor ( 9 ) is arranged in the center of the rotor ( 10 ) of fan ( 1 ). 
     
     
         13 . Air flow circulation system, in accordance with  claim 9 , characterized in that said suction duct ( 2 ) comprise an equivalent proportion ratio ranging from 2 to 3,5 times the size of the sprinkling duct ( 3 ). 
     
     
         14 . Air flow circulation system, in accordance with  claim 9 , characterized in that said angle (α) varies between 10° and 30°, and more preferably around 15°.