Refrigerator

A refrigerator comprising:

• an inner case comprising (i) a refrigerating case that defines a refrigerator compartment and (ii) a freezing case that defines a freezer compartment;
• an outer case disposed outside the inner case;
• a connection duct disposed between the inner case and the outer case;
• and
• a refrigerator compartment cold air supply duct that is detachably coupled to a rear inner surface of the refrigerating case and in fluid communication with the connection duct,
• wherein the connection duct and the refrigerator compartment cold air supply duct define a cold air flow path extending in an up-down direction,
• wherein an upper surface of the connection duct is coupled to and faces a lower surface of the refrigerator compartment cold air supply duct,
• wherein the upper surface of the connection duct and the lower surface of the refrigerator compartment cold air supply duct are inclined with respect to a surface of the refrigerator compartment,
• wherein the refrigerating case defines a duct inserting groove at an upper surface of the refrigerating case, and
• wherein an upper area of the refrigerator compartment cold air supply duct is inserted in and coupled to the duct inserting groove.