The invention relates to the technical field of expansion valves for controlling refrigerants in an air conditioner heat management system, and particularly discloses an electronic expansion valve and a small-flow working condition precision regulation and control method. The electronic expansion valve comprises a valve terminal, a valve body and a valve element, a guide cavity communicated with a threaded connection cavity is further formed in the position, on one side of a sealing conical surface, in the valve element, and the electronic expansion valve further comprises a guide structure movably connected with the guide cavity in the axial direction. The guide structure abuts against the position, coaxial and opposite to the valve port, in the lower flow channel of the valve terminal, the stable positioning and guiding effect on the valve element is achieved, the valve element cannot deflect or shake, the stability of the coaxial consistency of the circulation face and the valve port is good, and therefore it is guaranteed that the stability of the closure action is better; unnecessary shaking and noise are reduced, accurate controllability of the large-flow electronic expansion valve under the small-flow working condition is achieved, and the using range of the electronic expansion valve is expanded.

    本发明涉及应用于空调热管理系统中控制冷媒的膨胀阀技术领域,具体公开了一种电子膨胀阀及小流量工况精度调控方法。其中,电子膨胀阀包括阀岛、阀体以及阀芯,所述阀芯的内部于密封锥面一侧还设置有与所述螺纹连接腔连通的导向腔,还包括与所述导向腔轴向活动连接的导向结构,至少在密封锥面与阀口适配的小流量工况时,所述导向结构抵接于所述阀岛的下流道内与阀口同轴并相对的位置,对阀芯起到稳定的定位导向作用,阀芯不会出现偏斜晃动情况,使得流通面与阀口的同轴一致性的稳定性较好,进而保证截流动作的稳定性更好,减少了非必要的抖动和噪音,实现了大流量的电子膨胀阀在小流量工况下的精确操控性,拓展了电子膨胀阀的使用量程。


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    Title :

    Electronic expansion valve and small-flow working condition precision regulation and control method


    Additional title:

    一种电子膨胀阀及小流量工况精度调控方法


    Contributors:

    Publication date :

    2023-06-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16K VALVES , Ventile / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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