| CPC A47L 15/4225 (2013.01) [A47L 15/4223 (2013.01)] | 15 Claims |
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1. A dishwasher comprising:
a tub forming a washing room;
a drain port including:
a port body,
a first port coupling portion extending along an edge of an outer circumferential surface of the port body, and
a second port coupling portion extending along the edge of the outer circumferential surface of the port body, the second port coupling portion having a length longer than a length of the first port coupling portion,
a drain pump configured to be insertable into the drain port and rotatable in a circumferential direction to be coupleable to and decouplable from the drain port, and while the drain pump is coupled to the drain port, to generate a pumping force to drain water from the washing room of the tub that flows through the drain port to an outside of the dishwasher, the drain pump including:
a first pump coupling portion configured to couple to and decouple from the first port coupling portion of the drain port;
a second pump coupling portion configured to couple to and decouple from the second port coupling portion of the drain port; and
an interfering rib formed to protrude toward the drain port,
wherein, as the drain pump is inserted into the drain port in a state in which the interfering rib interferes with the second port coupling portion of the drain port and is rotated, the interfering rib interferes with the second port coupling portion of the drain port to restrict rotation of the drain pump, thereby preventing the first pump coupling portion of the drain pump from being coupled to the second port coupling portion of the drain port or preventing the second pump coupling portion of the drain pump from being coupled to the first port coupling portion of the drain port.
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