Provided is a dispenser including an ice-making water tank for storing ice-making water and an auger-type ice-making machine for producing ice chips by freezing the ice-making water in the ice-making water tank. The auger-type ice-making machine includes a refrigeration casing into which the ice-making water is supplied, and the refrigeration casing and the drain pan are connected to each other through the intermediation of an ice-making water drain pipe. The ice-making water in the refrigeration casing is drained at predetermined time points, and the drain pan is washed with the ice-making water thus drained.