A detergent supply apparatus includes a detergent storage compartment for storing a powdery detergent, and a conveying device for conveying the powdery detergent from the detergent storage compartment. The conveying device includes a coiled member having a hollow body and an open end. When the conveying device is rotated, the detergent fed from the detergent storage compartment to the hollow body of coiled member is conveyed by coiled member, and then is discharged from the open end of the coiled member. |