Air distribution system for combined refrigerators

Abstract

An air distribution system for combined refrigerators of the type that comprises: a freezing compartment ( 10 ) and a refrigerating compartment ( 20 ); an air-cooling compartment ( 40 ) lodging at least one evaporator ( 45 ); a distributing duct ( 60 ) having a rear window ( 62 ) opened to the air-cooling compartment ( 40 ), at least one front opening ( 65 ) communicating with the freezing compartment ( 10 ) and one end opening ( 64 ) maintained in communication with the refrigerating compartment ( 20 ); and at least one fan ( 46, 47 ) producing a forced airflow from the air-cooling compartment ( 40 ) to the freezing compartment ( 10 ) and to the refrigerating compartment ( 20 ), said distributing duct ( 60 ) carrying a conduct ( 63 ), having a first end coupled to the end opening ( 64 ) of the distributing duct ( 60 ), and a second end selectively placed in fluid communication with one of the parts defined by the distributing duct ( 60 ) and by the air-cooling compartment ( 40 ).

1 . An air distribution system for combined refrigerators of the type which comprises: a freezing compartment ( 10 ) and a refrigerating compartment ( 20 ); an air-cooling compartment ( 40 ) lodging at least one evaporator ( 45 ); a distributing duct ( 60 ) having a rear window ( 62 ) opened to the air-cooling compartment ( 40 ), at least one front opening ( 65 ) communicating with the freezing compartment ( 10 ), and one end opening ( 64 ) maintained in communication with the refrigerating compartment ( 20 ); and at least one fan ( 46 ,  47 ) producing a forced airflow from the air-cooling compartment ( 40 ) to the freezing compartment ( 10 ) and to the refrigerating compartment ( 20 ), characterized in that the distributing duct ( 60 ) carries a conduct ( 63 ), having a first end coupled to the end opening ( 64 ) of the distributing duct ( 60 ), and a second end selectively placed in fluid communication with one of the parts defined by the distributing duct ( 60 ) and by the air-cooling compartment ( 40 ), said conduct ( 63 ) being internal to the distributing duct ( 60 ).  
   
   
       2 . The air distribution system according to  claim 1 , characterized in that the conduct ( 63 ) is incorporated to the distributing duct ( 60 ).  
   
   
       3 . The air distribution system according to  claim 2 , characterized in that the distributing duct ( 60 ) comprises a rear basic portion ( 60   a ) in the form of a vertically disposed tray, having a rear wall provided with a rear window ( 62 ) and defining at least part of a front wall of the air-cooling compartment ( 40 ), and a front cover portion ( 60   b ) to be seated and affixed against the rear basic portion ( 60   a ) and being provided with at least one front opening ( 65 ).  
   
   
       4 . The air distribution system according to  claim 3 , characterized in that the front cover portion ( 60   b ) defines a wall portion of the conduct ( 63 ) when assembled.  
   
   
       5 . The air distribution system according to  claim 1 , characterized in that the conduct ( 63 ) is maintained in selective fluid communication with one of the parts defined by the distributing duct ( 60 ) and by the air-cooling compartment ( 40 ) by means of respective front opening ( 66 ) and rear opening ( 67 ) produced by the rupture of corresponding wall portions of the conduct ( 63 ).  
   
   
       6 . The air distribution system according to  claim 5 , characterized in that the conduct ( 63 ) conducts a forced airflow supplied, through the inlet opening ( 66 ), coming from the distributing duct ( 60 )), to whose rear window ( 62 ) is operatively associated a fan ( 46 ).  
   
   
       7 . The air distribution system according to  claim 5 , characterized in that the conduct ( 63 ) conducts a forced airflow, which is produced by a fan ( 47 ) that is operatively associated to the end opening ( 64 ) and to the refrigerating compartment ( 20 ), and which is supplied by the air-cooling compartment ( 40 ) to the conduct ( 63 ), through the rear opening ( 67 ).