JPS6484074A - Refrigerator - Google Patents

Abstract

PURPOSE: To smoothly achieve defrosting in an inner box by preventing an inner box wall surface facing to an outlet of a cooling pipe located in the vicinity of an outlet of a refrigerator chamber from being subjected to local supercooling upon a compressor being interrupted by providing a reverse U shaped trap on an inlet side of a freezing chamber cooling cooling pipe disposed on a heat insulation member side of the inner box. CONSTITUTION: A refrigerator chamber cooling pipe 15 flows a refrigerant from an inlet 15a of a refrigerator chamber cooling pipe and is coupled with a freezing chamber cooling pipe 16 at its outlet 15b. An inlet part 16a of the freezing chamber cooling pipe 16 is configured into a reverse U shaped trap, and is disposed in contact with an inner box back surface 3c. Hereby, when the compressor is interrupted, the freezing chamber cooling pipe inlet part is constructed as the reverse U shaped trap, so that the refrigerant is prevented from being reversely flowed to the refrigeration chamber cooling pipe outlet, and the cooling pipe located in the vicinity of the refrigeration chamber outlet and an inner box surface facing to the refrigeration chamber outlet from being subjected to local supercooling whereby there is achieved smoothly defrosting on the refrigerator chamber inner box surface utilizing an electric heater.