| 摘要 |
The present invention relates to a flow passage change-over unit provided to a spray arm of a dishwasher having a plurality of channels, including a change-over unit body for making reciprocating movement according to a water pressure, a body rotating unit secured to an circumferential surface of the change-over unit body for rotating the change-over unit body, and channel opening holes in a closed side of the change-over unit body for opening some of the plurality of supply holes according to a rotation angle of the change-over unit body. |
