1. Field of the Invention
The present invention relates to a washing machine, and more particularly, to a washing machine, which has an enhanced washing efficiency.
2. Discussion of the Related Art
Generally, in case that a washing machine is used, laundry is firstly put to the inside of the washing machine and then a laundry detergent and/or a functional detergent, such as a fabric softener, are put into a detergent box. Thereafter, when the washing machine is operated, water supplied to the inside of the washing machine flows into a drum by way of the detergent box. Specifically, the water supplied to the inside of the washing machine flows, together with the laundry detergent in the detergent box, into the drum. In this case, since a solid detergent is mainly used as the laundry detergent in the detergent box, the solid detergent is dissolved in water and then supplied to the drum.
In case that the washing machine is operated, cold water is supplied to the inside of the washing machine unless hot water is selected. Therefore, in case that cold water is supplied into the detergent box, the solid detergent in the detergent box is not easily dissolved in the cold water and thus remains in the detergent box. Thereby, a desired amount of the detergent is not supplied to the inside of the drum, and thus lowers the washing efficiency of the washing machine and further causes a user to remove the remaining detergent in the detergent box after the washing of the laundry has been completed.