| 摘要 |
<p>PROBLEM TO BE SOLVED: To properly control suspension and resumption of bathtub washing operation when a supply pressure of washing water is reduced, in a bathtub washing system not allowing mutual communication of information with a hot water supply device (a heat source machine) supplying the washing water.SOLUTION: A washing pipe 78 leads washing water supplied from a hot water supply pipe 75 of a hot water supply device to a washing nozzle 60 inside a bathtub 40. In the washing pipe 78, a flow sensor 18 and a hot water pouring solenoid valve 20 are interposed. When a flow rate reduction of the washing water by reduction of a supply pressure from the hot water supply device is detected during bathtub washing operation, a control part 36 closes the hot water pouring solenoid valve 20 once to suspend the bathtub washing operation, and executes retrial operation to newly open the hot water pouring solenoid valve 20 after a prescribed time. The control part 36 selects resumption of the bathtub washing operation by continuing an opened state of the hot water pouring solenoid valve 20 and continuation of the suspension of the bathtub washing operation by newly closing the hot water pouring solenoid valve 20, according to a flaw rate of the washing water after the retrial operation.</p> |
