Refrigerator

A refrigerator comprising:

• a cabinet that defines a refrigerating compartment and an evaporation chamber;
• a main door rotatably connected to the cabinet and configured to open and close the refrigerating compartment, the main door comprising a housing;
• a sub door disposed at a front of the main door and rotatably connected to the main door, the sub door being configured to open and close an opening defined at a front surface of the housing of the main door;
• an ice making room defined in the housing of the main door, the ice making room having a cool air inflow hole defined at one side thereof and an ice discharge hole defined at a bottom surface thereof;
• a door duct assembly that extends along a side wall of the housing of the main door and that has a first end connected to the cool air inflow hole;
• a cool air supply duct that is disposed in a side wall of the cabinet and that is configured to, based on the main door being in a closed position, connect the evaporation chamber and a second end of the door duct assembly to allow cool air of the evaporation chamber to be supplied to the ice making room;
• an ice maker located inside the ice making room;
• a cool air guide duct mounted on a bottom surface of the ice maker and configured to guide cool air supplied from the cool air inflow hole toward the bottom surface of the ice maker;
• a dispenser located in the sub door at a position vertically lower than the ice making room;
• and
• an ice bin disposed below the ice maker and configured to store ice made in the ice maker,
• wherein the ice maker comprises:
• an ice tray comprising a plurality of bottom cool air guide ribs that protrude from a bottom surface of the ice tray;
• and
• an ice separating guide that covers a front surface of the ice tray and a portion of a top surface of the ice tray,
• wherein the plurality of bottom cool air guide ribs extend from a first side edge of the ice tray to a second side edge of the ice tray in a direction corresponding to a width direction of the main door,
• wherein the plurality of bottom cool air guide ribs are spaced apart from each other in a direction from a front surface of the ice tray toward a rear surface of the ice tray corresponding to a thickness direction of the main door,
• wherein lower ends of the plurality of bottom cool air guide ribs are spaced apart from a bottom surface of the cool air guide duct, and
• wherein the dispenser comprises:
• a dispenser casing inserted into a mounting space defined in the sub door,
• a discharge duct connected to an upper portion of the dispenser casing and configured to selectively connect to the ice discharge hole of the ice making room based on the sub door being opened or closed, and
• a dispensing button disposed on a front surface of the dispenser casing.