Abstract: An electric refrigerator is designed to comprise a freezing chamber provided with a gas duct for drawing off a cooling gas from the freezing chamber and refluxing the cooling gas thereto. A main freezing evaporator is provided in the gas duct to freeze foodstuff stored in the freezing chamber by circulating a cooling gas through the freezing chamber and gas duct. The refrigerator also comprises an auxiliary shelf-shaped freezing evaporator for directly freezing the foodstuff placed thereon in all directions. A damper unit involved in the refrigerator mechanically operates a gas circulation valve provided in the gas duct. During the defrosting mode, the freezing evaporators are rendered inoperative, and the main freezing evaporator is heated to remove frost deposited thereon. During this interval, the damper unit causes the gas circulation valve to close the gas duct.

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.

Abstract: A refrigerating apparatus having two evaporators which are mounted respectively in the refrigeratory food compartment and the frozen food compartment, and wherein the refrigerant gas flow in the evaporator of the refrigeratory food compartment is controlled by both temperatures of the refrigeratory food compartment and the frozen food compartment.