DISH WASHER

PURPOSE: To provide a dish washer with an arm nozzle capable of periodically being reversed to uniformly wash dishes positioned even at the corners of a washing tank, by driving a washing water switching means accompanying rotation of an arm nozzle and switching the washing water jet to horizontal and slanting directions. CONSTITUTION: An arm nozzle is rotatably mounted on a pipe shaft 1 on the bottom of a washing tank and jet nozzles 3 are provided on the nozzle 2. A horizontal jet nozzle 4a is provided on the side face of one end tip of the nozzle 2 and a slanting nozzle 4b on the side face of the other end tip, and holes 5a and 5b for water flow switching are bored on the upperstream side of the jet nozzle 4a and 4b. A base part gear 6 is installed on the pipe shaft 1 so as to engage with a nozzle gear 7 rotatably mounted on the nozzle 2, and one end of a connection rod 8 is connected to the nozzle gear 7 and the other end is connected to a rectangular hole 9a of a closing bar 9. By blocking the hole 5b via the connection rod 8, the washing water flows to the jet nozzle 4a and 4b are switching to reverse the nozzle 2.