In order to reduce noise, a movable iron core and a valve needle are movably connected in a matched mode through a first spring, and the impact force generated when the valve needle makes contact with a main valve element is reduced; the valve needle is designed to be of a wide-end-up structure, the valve needle can be conveniently inserted into the upper portion of the driven iron core for assembly, assembly is convenient, and coaxiality is high. A ventilation cutting groove is formed in the outer side wall of the valve needle, extends from a thin cylinder on the lower portion of the valve needle to a thick cylinder on the upper portion of the valve needle, and penetrates through an inner cavity of the thick cylinder and an inner cavity of the movable iron core, so that it is guaranteed that airflow in the upper space of the movable iron core and airflow in the upper space of the main valve element are smoothly communicated; a good guiding effect is improved for axial movement of the static iron core, and the valve needle of the structure is high in strength and easier to machine; the integrated main valve element made of the elastic material is arranged on the lower portion of the valve needle, the pilot opening is formed in the main valve element, and the main valve element is wrapped by the metal guide sleeve, so that the sealing effect of the main valve element is good, and the guide effect of axial movement is good.

    本发明涉及常开型电磁阀,为降低噪音,将动铁芯与阀针采用第一弹簧活动配合连接,降低阀针与主阀芯接触的冲击力;将阀针设计成上宽下窄的结构,方便从动铁芯上部插入进行装配,装配方便且同轴度高;在阀针的外侧壁上开设通气切槽,通气切槽从阀针下部的细圆柱体延伸至上部的粗圆柱体上,通气切槽贯通粗圆柱体的内腔及动铁芯的内腔,即确保了动铁芯的上部空间与主阀芯的上部空间的气流贯通顺畅,还为静铁芯的轴向运动提高了良好的导向效果,该结构的阀针不仅强度高还更容易加工;阀针的下部设置采用弹性材质制成的一体式主阀芯,并在主阀芯上设置先导口,主阀芯的外部用金属导向套包覆,令主阀芯密封效果好,且轴向运动的导向效果也好。


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    Title :

    Normally open electromagnetic valve


    Additional title:

    一种常开型电磁阀


    Publication date :

    2025-03-25


    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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