Patent ID: 6105377
Filing Date: 2000-08-22
Classification: F25D

Abstract:
An air curtain fan driving device, comprising:a temperature setting part for setting a reference temperature of an interior of a refrigerating compartment of a refrigerator;a door opening/closing detection part for detecting opening and closing of a door of the refrigerating compartment;first and second temperature detecting parts for detecting the interior and exterior temperature of the refrigerating compartment, respectively;an air curtain fan driving part for driving an air curtain fan; anda control part for 1) performing a normal cooling operation to control the interior temperature of the refrigerating compartment by driving a cooling fan when the interior temperature is above the reference temperature, 2) determining which of several temperature ranges the exterior temperature belongs in, when the opening of the door of the refrigerating compartment is detected by the door opening/closing detection part, wherein the several temperature ranges are preset, 3) driving the air curtain fan with each of a number of rotations per minute corresponding to each of the several temperature ranges according to a determination result during the opening of the door, and 4) performing the normal cooling operation by stopping the driving of the air curtain fan when the closing of the door of the refrigerating compartment is detected.