FIG. 1 is a view illustrating a conventional ice tray assembly for a refrigerator. The conventional ice tray assembly for the refrigerator includes a casing 10 installed in the refrigerator, and an ice tray 20 placed in the casing 10, for making ices. A shelf 12 on which the ice tray 20 is put is formed in the casing 10. A user fills the ice tray 20 with water and puts the ice tray 20 into the casing 10, so that the ices are made in the ice tray 20 by cool air flowing in the refrigerator.
However, in the conventional ice tray assembly for the refrigerator, when the casing 10 with the ice tray 20 mounted therein is installed in a freezing chamber for freezing food, the casing 10 occupies a large area of a freezing space in the freezing chamber. In the case that the casing 10 is installed at a door for opening and closing the freezing chamber, when the door is closed, water filled in the ice tray 20 may overflow out of the casing 10.
Moreover, as a valve is driven in a state where a water tank is not completely mounted in the freezing chamber, some of water stored in the water tank may not be supplied to the ice tray 20 but dispersed into the freezing chamber.