The invention relates to the technical field of refrigerant flow adjustment, in particular to an electronic expansion valve. The electronic expansion valve comprises a rotor, a transmission assembly, a valve needle assembly and a valve seat, the valve needle assembly comprises a first valve needle and a second valve needle, the first valve needle is installed in an inner cavity of the second valve needle and connected to the transmission assembly, a first limiting piece is arranged on the upper portion of the first valve needle, and the second valve needle is connected with the first limiting piece. A first channel hole is formed in the side wall of the second valve needle, a protrusion is arranged at the bottom of the first valve needle, and a second channel hole matched with the protrusion is formed in the bottom face of the second valve needle. A first refrigerant hole is formed in the side wall of the valve seat, a second refrigerant hole is formed in the bottom wall of the valve seat, and the diameter of the second refrigerant hole is larger than that of the second channel hole. The electronic expansion valve is simple in structure and high in manufacturability, the single electronic expansion valve can achieve large and small flow throttling control through cooperation of the first valve needle and the second valve needle, the modularization degree is high, and the cost is low.

    本发明涉及冷媒流量调节技术领域,尤其是涉及一种电子膨胀阀。电子膨胀阀包括:转子、传动组件、阀针组件和阀座,阀针组件包括第一阀针和第二阀针,第一阀针安装于第二阀针的内腔,第一阀针连接于传动组件,第一阀针上部设置有第一限位件,第二阀针与第一限位件相连接,第二阀针的侧壁设置有第一通道孔,第一阀针底部设置有凸起,第二阀针的底面设有与凸起相适配的第二通道孔;阀座的侧壁设置有第一冷媒孔,阀座的底壁设置有第二冷媒孔,第二冷媒孔的直径大于第二通道孔的直径。本发明提供的电子膨胀阀结构简单,可制造性强,单个电子膨胀阀即能够通过第一阀针和第二阀针的配合实现大小流量节流控制,且模块化程度高,成本低。


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    Title :

    Electronic expansion valve


    Additional title:

    电子膨胀阀


    Publication date :

    2023-04-18


    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 / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS




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