METHOD FOR CONTROLLING HUMIDIFIER FAN OF REFRIGERATOR HUMIDIFIER

摘要

PURPOSE: A method for controlling fan of refrigerator humidifier is provided to maintain freshness of vegetables and fruits stored in a vegetable compartment for a long time by varying the humidity by controlling the speed of the BLDC motor for driving the fan. CONSTITUTION: A method for controlling a fan of refrigerator humidifier comprises the steps of determining whether a humidifier switch is selected or not in the control unit, blowing humidity into a vegetable compartment by rotating a humidity fan for 30seconds per an hour by applying a third voltage lower than a second voltage to the BLDC motor when the humidifier switch is so set up not as to be selected, blowing humidity into the vegetable compartment by rotating a humidity fan by applying a first maximum driving voltage to the BLDC motor when the humidifier switch is so set up not as to be selected, and blowing humidity into the vegetable compartment by rotating a humidity fan for 30seconds per an hour by applying the second voltage immediately lower than the first voltage to the BLDC motor when the humidity in the vegetable compartment reaches to a predetermined degree.