| 摘要 |
PURPOSE: An automatic control heating system is provided to automatically control flow rate of hot water for heating to reduce waste of hot water, and to improve running efficiency in case a pressure difference arises between supplied hot water and discharged hot water. CONSTITUTION: An automatic control heating system(100) comprises a hot water supply header(110), hot water pipes(126-129), a hot water returning header(130), flow control valves(146-149), valve drive actuators(151-154), a flow rate control valve assembly(200), temperature controllers(156-159), and a control device(160). The flow rate control valve assembly is equipped with an inflow control valve, a flow discharge control valve, and a bypass pipe. The opening degree of the flow discharge control valve is controlled by a pressure difference inside the inflow control valve and the flow discharge control valve. The flow control valve is connected to the hot water pipes to control the flow of hot water. The control device controls the opening degree of each flow control valve according to heating temperature. |
