| 摘要 |
PROBLEM TO BE SOLVED: To provide a bathtub washing unit without fear of insufficient washing of a bathtub, even if another plug, such as a faucet, is opened during the washing operation of the bathtub. SOLUTION: The bathtub 11 is provided with a washing nozzle 29 for injecting a washing water. A hot water supplying device 13 is provided with a heat source water quantity sensor 21 for measuring the flow rate of a cold or hot water supplied from the hot water supplying device 13. The faucet 14 is provided at the terminal end of a hot water delivery path 18 of the hot water supplying device 13 and the other end of a washing water supply pipe 30 connected to the washing nozzle 29 is connected to the hot water delivery path 18. The washing water supply pipe 30 is provided with a venturi tube 36 and a detergent 34 in a detergent tank 35 is supplied from the venturi tube 36 into the washing water supply pipe 30 through a detergent supply pipe 37 having a detergent supply valve 38. During the washing operation or the rinsing operation, when a change in a measured value Qn of the heat source water quantity sensor 21 exceeds a certain value, that is determined that the faucet 14 is opened, the washing operation or the rinsing operation is stopped temporarily. COPYRIGHT: (C)2007,JPO&INPIT
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