Patent ID: 7228704

Claim:
A drawer refrigeration unit, comprising: a cabinet defining an interior chamber divided into first and second drawer cavities; a first drawer slidably mounted to the cabinet in the first drawer cavity; a second drawer slidably mounted to the cabinet in the second drawer cavity; a refrigeration system including an evaporator mounted within the interior chamber, a compressor receiving return refrigerant from the evaporator and a condenser coupled to the compressor and to the evaporator through a restriction; and an air circulation system within the interior chamber for communicating air between the first and second drawer cavities; wherein the first cavity has a first temperature zone and the second cavity has a second temperature zone at a temperature differential of at least 10 degrees Fahrenheit (° F.); wherein the cabinet includes a partition between the first and second drawer cavities; wherein the air circulation system has a circulation path formed by a chimney and a return path for communicating air between the first and second drawer cavities formed by an opening in the partition.