Abstract: A refrigerator is provided. The refrigerator comprises an ultraviolet discharging lamp, for irradiating ultraviolet rays to an air duct inside the refrigerator, and irradiating a visible light to a cold storage compartment of the refrigerator; a light catalyst filter, installed in the air duct and activated by the ultraviolet rays; a fan for forming an air curtain when a door of the cold storage compartment of the refrigerator is opened; and a controlling device for lighting the ultraviolet discharging lamp when the door of the cold storage compartment of the refrigerator is opened. In addition, the refrigerator can further comprise an operating device for setting or disabling an antimicrobial mode of the refrigerator; and a controlling device for lighting the ultraviolet discharging lamp for a preset interval, and turning off the ultraviolet discharging lamp when a door of the refrigerator is opened, when the antimicrobial mode is disabled.

Abstract: A refrigerator is provided. The refrigerator comprises an ultraviolet discharging lamp, for irradiating ultraviolet rays to an air duct inside the refrigerator, and irradiating a visible light to a cold storage compartment of the refrigerator; a light catalyst filter, installed in the air duct and activated by the ultraviolet rays; a fan for forming an air curtain when a door of the cold storage compartment of the refrigerator is opened; and a controlling device for lighting the ultraviolet discharging lamp when the door of the cold storage compartment of the refrigerator is opened. In addition, the refrigerator can further comprise an operating device for setting or disabling an antimicrobial mode of the refrigerator; and a controlling device for lighting the ultraviolet discharging lamp for a preset interval, and turning off the ultraviolet discharging lamp when a door of the refrigerator is opened, when the antimicrobial mode is disabled.

Abstract: A defrost control apparatus for refrigerator includes a microcomputer which counts the number of opening/closing times of a door of a storage room for each of time zones within a day so as to set indexes for every time zones on the basis of the number of opening/closing times. The microcomputer also counts operating hours of a compressor and total elapsed hours, and determines a sudden phenomenon and a season. The microcomputer further selectively fetches the indexes, and generates a single index by joining a plurality of indexes so as to apply the same to a neural network included in a defrost signal generating unit. The neural network generates a defrost on/off signal on the basis of inputted data. In addition, if feature amounts are generated on the basis of the indexes by a feature detecting unit, the neural network generates the defrost on/off signal on the basis of the feature amounts.