| 摘要 |
PURPOSE:To keep the detected water quantity nearly at a constant level regardless of the set quantity of water in case the size and the operating force are reduced to obtain the detection of water quantity as a switch signal, by carrying out indirect control of the water quantity without putting a control valve direct ly into the water path. CONSTITUTION:A water controller contains the primary and secondary pressure rooms 5 and 11 separated from each other by a diaphragm 10, a control hole 4 opening to the room 5, a valve 9 which is interlocked to the diaphragm 10 to vary the opening of the hole 4, and a flow-in route 2 reaching the hole 4. In addition, a flow-out route 6, a constant differential pressure valve 7 plus a Venturi tube 8 set in the route 6 and the 1st link path 17 which secures the communication between the inlet part of the tube 8 and the room 11, along with the 2nd link path 19 which secures the linkage between a throttle part 18 of the tube 8 or the outlet part of an orifice and the room 11 plus a control valve rovided to either one of the two paths 17 and 19. Thus the opening of the control valve is varied to control the flowing water quantity. |
