AIR CURTAIN GENERATOR FOR REFRIGERATOR

摘要

An air curtain generator (20) generates an air curtain in a refrigerant compartment (112) of a refrigerator. In the air curtain generator, a sensor (302) senses open and closed states of a refrigerant compartment door (118). A brushless direct current air curtain fan (304) blows cool air into a refrigerant compartment according to a sensing result of the sensor in order to generate an air curtain in the refrigerant compartment. A direct current power source (306) supplies a direct current driving current to the brushless direct current air curtain fan (304). A driver (308) drives the brushless direct current air curtain fan. A microcomputer (310) controls an operation of the driver (308) according to the sensing result of the sensor (302). The air curtain generator maximizes functions of an air curtain generator by applying a brushless direct current air curtain fan having low noise level, low power consumption, and high efficiency thereto. The air curtain generator also controls a rotating speed of a brushless direct current air curtain fan according to a state of the refrigerant compartment to thereby adjust air speed.