Refrigerator

A refrigerator comprising:

• a cabinet that defines a first storage compartment and an opening at a front side of the first storage compartment;
• an inner door configured to open and close at least a portion of the first storage compartment, the inner door defining a second storage compartment configured to store one or more items;
• an outer door configured to open and close at least a portion of the second storage compartment;
• a cold air supply unit configured to supply cold air to each of the first storage compartment and the second storage compartment;
• a cold air duct located in the first storage compartment and configured to, based on the inner door being oriented in an open position or a closed position, selectively communicate with the cold air supply unit and the second storage compartment;
• and
• a hinge unit located at a first side of the cabinet and configured to rotatably couple the inner door to the cabinet,
• wherein the cold air duct extends from a first position in the first storage compartment toward the first side of the cabinet, and is configured to supply cold air through a side surface of the inner door that is located closer to the first side of the cabinet than to the first position in the first storage compartment,
• wherein the cold air supply unit is located at a rear side of the first storage compartment,
• wherein the cold air duct comprises:
• a suction duct located on a rear surface of the first storage compartment and configured to receive cold air from the cold air supply unit, and
• a supply duct located on a side surface of the first storage compartment and connected to the suction duct, the supply duct being configured to receive cold air from the suction duct and supply the received cold air to the inner door,
• wherein the cabinet comprises an inner case that defines the first storage compartment, and an outer case that surrounds the inner case,
• wherein the cold air supply unit is located between the inner case and the outer case and is configured to communicate with the cold air duct,
• wherein the cold air supply unit comprises:
• a heat exchanger configured to generate cold air by exchanging heat with air received from outside of the refrigerator,
• a fan configured to cause cold air to flow toward the cold air duct, and
• a shroud that supports the fan and that is configured to communicate with the cold air duct, and
• wherein the suction duct is located on an inner surface of the inner case.

A refrigerator comprising:

• a cabinet that defines a first storage compartment and an opening at a front side of the first storage compartment, wherein the cabinet comprises an inner case that defines the first storage compartment, and an outer case that surrounds the inner case;
• an inner door configured to open and close at least a portion of the first storage compartment, the inner door defining a second storage compartment configured to store one or more items;
• an outer door configured to open and close at least a portion of the second storage compartment;
• a cold air supply unit configured to supply cold air to each of the first storage compartment and the second storage compartment;
• and
• a cold air duct located in the first storage compartment and configured to, based on the inner door being oriented in an open position or a closed position, selectively communicate with the cold air supply unit and the second storage compartment,
• wherein the cold air supply unit is located at a rear side of the first storage compartment,
• wherein the cold air duct comprises:
• a suction duct located on a rear surface of the first storage compartment and configured to receive cold air from the cold air supply unit, and
• a supply duct located on a side surface of the first storage compartment and connected to the suction duct, the supply duct being configured to receive cold air from the suction duct and supply the received cold air to the inner door, and
• wherein the suction duct is located on an inner surface of the inner case and comprises an insulator configured to insulate the suction duct from the first storage compartment.