| 摘要 |
PURPOSE:To remove air in a piping and provide a stable water level control by a method wherein a bath tub is connected to a water supplying part, a pressure sensing means for use in sensing a water pressure through a piping to supply water to the bath tub and a water level control means for supplying auxiliary water to the piping are provided. CONSTITUTION:A pressure sensor 14 for use in sensing a pressure of a piping 8 for expressing a water level of a bath tub 2 is connected to a branch pipe 12. As air enters a piping 8, a detected pressure of a pressure sensor 14 may detect a pressure differing from an actual water level within the bath tub 2. In order to prevent this erroneous operation, a hot water feeding control 16 may compare a detected water level hS of he pressure sensor 14 with a set water level hF. In case that it is judged that the detected water level hs is lower than the set water level hF, a three-way valve 45A is opened toward the piping 8 so as to perform an auxiliary supplying of water from the piping 8. This auxiliary water is such an amount as one capable of removing air from the piping 8. After this operation, the three-way valve 45A is closed to detect the water level and if the detected water level hS is equal to the set water level hF, the water supplying control is completed. |
