Patent ID: 8104489

Claim:
A dishwasher comprising: a sump case defining a wash liquid reservoir; a wash pump configured to pump wash liquid; a wash motor configured to drive the wash pump; a drain pump provided on one side of the sump case; and a drain motor configured to drive the drain pump, the drain motor being provided separately from the wash motor, wherein the drain pump includes: a drain impeller inducing a flow of wash liquid, the drain impeller passing through a drain hole formed in the sump case; a drain pump case which is integrally formed with an inner side of the sump case; and a drain pump cover detachably coupled to the drain pump case at an inside the sump case, wherein the drain pump case and drain pump cover form a housing to protect the drain impeller, wherein the drain pump cover includes an impeller covering portion covering the drain impeller and a drain guiding portion configured to guide a flow of wash liquid to the drain impeller, wherein the drain guiding portion includes an inlet through which wash liquid in the wash liquid reservoir flows into the drain pump and a valve selectively opening the inlet, the valve being coupled to the inlet, wherein the drain pump cover is configured to be detachable from the drain pump case together with the valve, and wherein the drain pump cover covers the drain impeller without the drain impeller passing through the drain pump cover.