Cool-air duct for refrigerators

A refrigerator comprising:

• a freezing compartment;
• a refrigerating compartment;
• an evaporator for generating cool air;
• a fan for circulating the cool air to the freezing and refrigerating compartments;
• and
• a cool air duct disposed on a rear wall of the refrigerating compartment for guiding cool air to the refrigerating compartment, the cool air duct including
• first and second generally vertical air passages spaced apart horizontally for conducting respective portions of the cool air downwardly,
• a vertically spaced plurality of discharge openings disposed between the air passages and communicating with the refrigerating compartment, each discharge opening including first and second discharge portions situated horizontally adjacent one another, and
• vertically spaced branch ducts connecting each air passage with respective discharge openings, such that the first discharge portion of each discharge opening is connected to the first passage by a first branch duct, and the second discharge portion of each discharge opening is connected to the second passage by a second branch duct, one of the first and second branch ducts intersecting its respective air passage at a level higher than a level at which the other branch duct intersects its respective air passage, the one branch duct intersecting its respective discharge portion at a level higher than a level at which the other branch duct intersects its respective discharge portion.