Patent ID: 7028499

Claim:
A refrigerator, comprising: an evaporator having a refrigerant pipe; a defrosting heater placed below the evaporator and defrosting the evaporator; a bypass pipe through which refrigerant of the evaporator is bypassed; and a bypass valve formed in the bypass pipe, valving the refrigerant flowing in the bypass pipe, wherein the refrigerant pipe includes a main refrigerant pipe evaporating the refrigerant, and a heat-transfer refrigerant pipe extending from a lower part of the main refrigerant pipe to exchange heat, the heat-transfer refrigerant pipe being positioned between an upstream section and a downstream section of the main refrigerant pipe, and evaporated refrigerant heated by the defrosting heater rises toward an upper part of the evaporator through the upstream section and the downstream section of the main refrigerant pipe, and exchanges heat with refrigerant in an upper part of the main refrigerant pipe.