| 摘要 |
PURPOSE:To eliminate dispersion of injected water when remaining water is detected by a method wherein a suction side port of both ports at both ends of a forced circulation circuit for sensing remaining water is set higher than a discharging port. CONSTITUTION:When presence or non-presence of remaining water within a bath tub B is judged, it is judged in reference to the presence or non-presence of water within a forced circulation circuit 1 for connecting one port B1 with the other ports 12a and 12b. Accordingly, in the case that the remaining water is present and the level of the remaining water is lower than the height of the port B1 at the suction side, no water flow is generated at the forced circulation circuit 1, resulting in that the injection water is not dispersed from the discharging ports 12a and 12b when the remaining water sensing operation is carried out. Under this condition, it is judged that the remaining water is not present. Only in the case that the level of the remaining water is higher than that of the suction port B1, the water flow is generated in the forced circulation circuit 1 and it is judged that the remaining water is present. In this case, since the discharging ports 12a and 12b are lower than the remaining water level, no water jets out when the remaining water is detected. |
