Electric two-way valve working principle

The temperature sensor TE-1, the proportional-integral temperature controller TC-1 and the electric control valve TV-1 form a supply air temperature control system. The air supply temperature control system is installed in the TE 1 of the air supply pipe and transmits the detected temperature signal to TC-1 , The TC-1 will TE 1 a constant value of the measured value is continuously compared with the set value, while constantly outputting the signal to control the opening of TV-1 adjustable connection, and finally to TE-1 measurement of the ambient temperature maintained at the set Temperature range. Air pressure switch DPS-1 is used to detect air permeability of the filter, the more dirty the filter, the lower the air permeability, the greater the pressure difference between the two sides. When the pressure difference exceeds the setting value of DPS-1, the micro switch will operate and send an alarm signal. When the temperature after the coil is lower than a certain limit, the low-temperature protection switch TS-1 cut off the blower power, so that the fresh air damper is closed to prevent the ice inside the coil, riser coil. SW-1 for the built-in cold / warm running state conversion.