A refrigerator freezer having an upper refrigerator compartment and a lower below freezing freezer compartment. The upper compartment can be a convertible compartment selectively operable by the user as an above freezing refrigerator compartment or as a below freezing freezer compartment. The evaporator...http://www.google.de/patents/US7051539?utm_source=gb-gplus-sharePatent US7051539 - Convertible refrigerator-freezer
