| 摘要 |
PURPOSE:To obtain an exact water supply quantity by detecting a water supply quantity by a magnet interlocking with an impeller rotated by water passing through a water feed port, and comparing this water supply quantity with a water quantity set in advance. CONSTITUTION:Water passing through a water feed solenoid valve 6 is led to an impeller 31 by a guide plate 30, and when the water passes through the impeller 31, it is rotated. An interlocking permanent magnet 32 or a ring-like permanent magnet 34 is provided on the impeller 31, and by a rotation of the impeller 31, the magnet 32 is operated or the magnet 34 is rotated. By an operation of the magnet 32, a magnetic field detecting sensor 33 is opened and closed, or a lead switch 35 is opened and closed. This number of times of opening and closing is inputted I to a microcomputer 36 and stored, and compared III with the number of times II corresponding to a water quantity set in advance, and when they become same, the solenoid valve 6 is stopped by an output IV. |
