Refrigerator including air wall separating the freezer and fresh food portions

A household refrigerator of the side-by-side type comprising:

• a. a food compartment including a freezer portion and a fresh food portion, said compartment being defined by a solid insulated box having a solid insulated access door and constructed so that the interior thereof is physically isolated from ambient air when the door is closed;
• b. means for cooling said freezer portion;
• and
• c. means for passing a first substantially laminar stream of air through said compartment to form an invisible planar boundary between said portions, said means including:
• a first air conduit extending substantially across one of the walls of said compartment to define an interface between the planar boundary and said one of the walls, said first air conduit having at least one opening for directing the first laminar stream of air across said compartment to an opposed wall of said compartment,
• a first air-receiving element extending substantially across said opposed wall to define an interface between the planar boundary and said opposed wall, said first receiving element serving to receive said first laminar stream of air, and
• means for recirculating air from said first receiving element to said first air conduit.