Abstract: A defrost-water vaporizer of a refrigerator includes a water reservoir mounted in a machine compartment with a compressor so as to receive defrost water resulting from the melting of frost adherent to an evaporator to be discharged outside a storage space of the refrigerator, a plurality of vaporizing elements absorbing the defrost water in the water reservior by capillarity and vaporizing the defrost water from the surfaces, a lower support formed from an elastic material and supporting the vaporizing elements in the water reservior, and an upper support formed from an elastic material and supporting the upper ends of the vaporizing elements. Lower ends of the vaporizing elements are inserted in the water reservoir so as to come into contact with the defrost water in the water reservoir. Upper ends of the vaporizing elements are positioned higher than the compressor.

Abstract: A refrigerator with a freezing chamber and a cold chamber, wherein the freezing chamber is cooled rapidly by a main, fan-type, cooling system and a secondary, direct-type, cooling system. The secondary cooling system includes a box-like cooler having a projecting plate for placing food products thereon to provide uniform cooling within the freezing chamber. The refrigerator compressor is controlled in accordance with the temperature of the freezing chamber so as to be efficiently operated in the freezing cycle. Gas coolant is directed via control valves in accordance with the temperature of the freezing and cold chambers.