Patent ID: 8151587

Claim:
A medium temperature refrigerated merchandiser system comprising: an insulated cabinet defining a product display area maintained in a refrigerated condition at a temperature above 32 degrees F. and having a compartment separate from the product display area; a relatively high air side pressure drop evaporator disposed within said compartment and having a length, wherein the relatively high air side pressure drop for the evaporator is provided at least in part by a fin and tube heat exchanger having a fin density in the range of 6 fins per inch to 15 fins per inch, and having fins comprising corrugated plates having waves that extend perpendicularly to a direction of airflow through the evaporator; a plurality of air circulators disposed within said compartment and having a spacing therebetween, and in cooperative relationship with said evaporator, wherein the air circulators have blades disposed at a pitch angle within the range of approximately 25 to 30 degrees; and an air circulation circuit connecting said product display area in direct air flow communication with said compartment; wherein the relatively high air side pressure drop evaporator and the plurality of air circulators with the spacing therebetween are operable to provide a substantially uniform evaporator exit airflow velocity profile along the length of the evaporator.