US Patent 7464565 Rapid temperature change device for a refrigerator

A quick-cooling device for a refrigerator includes top, bottom and opposing side walls that collectively define an air intake/delivery housing. A plurality of air discharge nozzles are arranged about at least one wall of the housing. A blower fan is mounted to the housing for drawing an airflow from the refrigerator into the housing and thereafter expelling the airflow from the housing through the air discharge nozzles. The air discharge nozzles can be constituted by slotted or circular openings arranged in staggered rows and sized to match a particular application.