Draught fan coil pipe self-adaptation energy saving control valve

The invention discloses a draught fan coil pipe self-adaptation energy saving control valve. The draught fan coil pipe self-adaptation energy saving control valve comprises a self-adaptation control circuit, a detection unit and a floating point valve executer. The self-adaptation control circuit is connected with a background center. The detection unit comprises an air supply temperature sensor and an air return temperature sensor which are connected with the input end of the self-adaptation control circuit. The floating point valve executer is connected with the output end of the control circuit. Self-adaptation PID algorithm operation treatment is conducted through constant collection of the air supply temperature and the air return temperature, control signals are automatically outputto a water valve control loop, the aperture of a floating point valve is adjusted, and continuous adjustment of frozen water flow is achieved; and after self-adaptation adjustment is conducted, indoortemperature fluctuation i