| 摘要 |
The fluid regulation device for regulating the flour of fluid through a valve, comprises: a valve 4 having one or more input ports 14, 16 for receiving fluid, and one or more output ports 18 for outputting fluid; and a drive stem 8 for driving the valve; a motor 2 coupled to the drive stem of the valve to drive the valve to regulate a flow of fluid between the input and the output ports; a controller 12 for controlling the motor in response to a desired flow of fluid through the valve; and a position detector 6,10 such as an optical encoder for detecting the position of the valve, the position detector being coupled to the drive stem of the valve, wherein the position detector is configured to output a first position signal dependent on a first detected position of the valve, and a second position signal, different from the first position signal, depending on a detected reference position of the valve, and wherein the controller controls the motor to drive the valve to a desired position in response to the first and second position signals to regulate the flow of a fluid flowing through the valve. Additionally(as shown in fig.8), a mixing valve for regulating fluid temperature which has hot and cold inputs with a common mixer output port. The mixer valve also being motor controlled independently of the flow valve. |
