Refrigerator door having a tube guide for supporting a water supply tube

A refrigerator door, comprising:

• an outer case;
• an inner case;
• a foaming liquid injected in a space formed between the inner case and the outer case;
• an ice making device positioned on the inner case;
• a dispenser provided on the outer case;
• a water supply tube provided in the space between the inner case and the outer case;
• a tube guide installed against an internal side of the outer case facing the space between the inner case and the outer case, wherein the water supply tube is positioned between the tube guide and the internal side of the outer case and is held against the internal side of the outer case by the tube guide such that a position of the water supply tube remains fixed as the foaming liquid is injected into the space, wherein the tube guide comprises a plurality of spacing members that protrude from a side of the tube guide facing the internal side of the outer case, wherein distal ends of each of the plurality of spacing members are positioned against the internal side of the outer case, and gaps defined by adjacent spacing members, the side of the tube guide and the internal side of the outer case guide a flow of the injected foaming liquid;
• and
• a cool water tank installed on the inner case and connected with the water supply tube after the foaming liquid is injected into the space.