ELECTRONIC EXPANSION VALVE?STEPPING MOTOR AND REVERSING VALVE

摘要

A valve comprises an electric control part(10) and a mechanical part(20), said electric control part(10) comprising a bus signal receiving/delivering module(11) which is used for receiving a bus control signal and delivering it to a central processing module(12). The central processing module(12) extracts the opening information of the valve body from the bus control signal, generates a corresponding pulse control signal by combining the opening information with a current position information of a stepping motor(21) reading from a data storage module(15), and then deliveries the pulse control signal to the driving module of the stepping motor(13). The driving module of the stepping motor(13) drives the stepping motor(21) according to the pulse control signal in order to adjust the opening of said valve.