| 摘要 |
PURPOSE:To make high-speed response and stability compatible by outputting a predertermined digital signal according to the deviation in the outputs of a rotating position setter by a motor and a rotating position detector, in hot water temp. regulation of a gas water heater. CONSTITUTION:A mixer 1 regulates the flow rate of hot water and water depending upon the degree of opening or closing of a valve 2 provided to a water pipe, and flows out the hot water of a required temp. A rotating position setter 4 of a motor 3 sets the temp. of the hot water flowed out from the mixer 1, and is constituted of a variable resistor, etc. A rotating position detector 5 is provided for detecting the rotating position of the motor 3, and is constituted of a variable resistor, etc. Further, a state detecting part 6 receives the signal inputs from the setter 4 and the detector 5, outputs the predetermined digital signal according to the state of said deviation, has a blind zone where a rotation command is not outputted if said deviation is below the predetermined value, and outputs a digital signal of a positive or negative command according to said state when the deviation exceeds the predetermined value, thereby making high speed response and stability compatible. |
