| 摘要 |
PURPOSE:To perform an automatic water feeding operation having a correct water level within a short period of time by a method wherein means for making an instantaneous flow rate of a flow rate control valve constant is provided, data relating to a hot water feeding dynamic pressure starting from an initiation of hot water feeding to its stoppage and an accumulated flow rate are stored in a micro-computer control part and then a hot water feeding operation subsequent to the first operation is controlled in response to the aforesaid data. CONSTITUTION:An instantaneous flow rate is measured by an instantaneous flow rate sensor 21, a micro-computer control part may judge whether the instantiates flow rate is a predetermined flow rate or not. When the instantaneous flow rate value is more than the stored value, a flow rate control valve 20 is made variable toward its closing direction. In turn, when the instantaneous flow rate is less than the predetermined flow rate, the flow rate control valve 20 is made variable in its opening direction, thereby a flowing hot water dynamic pressure is detected by a pressure sensor 13 while feeding a specified amount of flow rate of hot water to a bath tub. Data relating to a dynamic pressure P and another data relating to a layered flow rate got through a flow rate sensor 4 are inputted into a micro-computer control part. When the pressure sensor 13 detects that the hot water reaches a set water level, the flow rate control valve 20 and a solenoid valve 9 are closed, the inputted data and the data having the former data converted into a static pressure are stored in the micro- computer control part and then the subsequent hot water feeding control is carried out in response to the data. |
