The invention relates to the technical field of refrigerant flow control, in particular to an electronic expansion valve throttling mechanism and an electronic expansion valve. The electronic expansion valve throttling mechanism comprises a valve needle and a valve seat, and the valve needle is installed on the valve seat and provided with a moving path in the axis direction of the valve seat. The valve needle comprises a first valve needle section and a second valve needle section from top to bottom, and the interface of the first valve needle section and the second valve needle section is a first section; the valve seat comprises a first valve seat section and a second valve seat section, the interface of the first valve seat section and the second valve seat section is a second section, a first end face is formed at the top of the first valve seat section, a second end face is formed at the bottom of the second valve seat section, the first end face is provided with a first throttling exhaust port, and the second end face is provided with a second throttling exhaust port. A refrigerant inlet hole is formed in the side face of the second valve seat section. The single electronic expansion valve provided by the invention can realize large and small flow throttling control, and is simple in structure, high in modularization degree and low in cost.

    本发明涉及冷媒流量控制技术领域,尤其是涉及一种电子膨胀阀节流机构及电子膨胀阀。电子膨胀阀节流机构包括:阀针和阀座,阀针安装于阀座,且具有沿阀座轴线方向的移动路径;阀针包括自上至下的第一阀针段和第二阀针段,第一阀针段和第二阀针段的分界面为第一截面;阀座包括第一阀座段和第二阀座段,第一阀座段和第二阀座段的分界面为第二截面,第一阀座段的顶部形成第一端面,第二阀座段的底部形成第二端面,第一端面设置有第一节流排出口,第二端面设置有第二节流排出口,第二阀座段的侧面设有冷媒进入孔。本发明提供的单个电子膨胀阀即可实现大小流量节流控制,且结构简单,模块化程度高,成本低。


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    Titel :

    Throttling mechanism of electronic expansion valve and electronic expansion valve


    Weitere Titelangaben:

    电子膨胀阀节流机构及电子膨胀阀


    Erscheinungsdatum :

    2023-04-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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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