PROBLEM TO BE SOLVED: To provide a dental unit including a cleaning circuit unlikely to cause wrong operation.SOLUTION: The dental unit includes a cleaning circuit 10, the circuit connected to a water supply circuit and cleaning the inside of a tube of the water supply circuit. The cleaning circuit includes: a cleaning liquid container 11 in which cleaning liquid is stored a three-way valve 12 configured to manually change over whether to flow the cleaning liquid to the water supply circuit, or to flow water to the water supply circuit and a control panel 15 that includes a switch 18 for changing over the three-way valve so as to start inflow of the cleaning liquid to the water supply circuit, and a switch 19 to start inflow of the water to the water supply circuit. The control panel includes: a knob 16 for changing over the three-way valve by rotation or movement and means 17 that, when one of the switch to start the inflow of the cleaning liquid to the water supply circuit, and the switch to start the inflow of the water to the water supply circuit, is exposed to the outside, conceals the other.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】誤操作を生じにくい洗浄回路を備える歯科ユニットを提供する。【解決手段】給水回路に接続され、給水回路の管内を洗浄する回路である洗浄回路10を具備し、洗浄回路は、洗浄液が貯留された洗浄液容器11と、給水回路に洗浄液を流すか、給水回路に水を流すかを手動により切り替える三方弁12と、三方弁の切り替え、給水回路への洗浄液の流入開始のスイッチ18、及び、給水回路への水の流入開始のスイッチ19を具備する操作盤15と、を有し、操作盤は、回転又は移動により三方弁を切り替える摘み16と、給水回路への洗浄液の流入開始のスイッチ、及び、給水回路への水の流入開始のスイッチの一方が露出しているときには、他方を隠蔽する手段17を備えている。【選択図】図3
