The invention provides an electronic expansion valve. One end of a valve needle in the electronic expansion valve is connected with a valve disc, and the opening degree of a refrigerant channel in the electronic expansion valve is controlled through synchronous lifting of the valve needle and the valve disc; and moreover, a first spring is arranged in the electronic expansion valve, is arranged between the end part of the valve disc and a valve body of the electronic expansion valve, and is used for driving the valve disc to return to close the refrigerant channel when an electromagnetic coil in the electronic expansion valve loses power. According to the electronic expansion valve, the first spring is adopted to provide driving force for the valve needle during returning, under driving of the first spring, closing and sealing of the refrigerant channel are achieved by means of contact between the valve disc and the valve body, reliable returning of the valve disc can be ensured by means of the characteristic of high structural stability of the spring, and therefore the sealing performance of the electronic expansion valve can be ensured during power loss.

    本发明提供了一种电子膨胀阀,所述电子膨胀阀中的阀针的一端连接有阀碟,并通过所述阀针和所述阀碟的同步升降,控制所述电子膨胀阀中制冷剂通道的开度;且,所述电子膨胀阀内设有第一弹簧,所述第一弹簧设于所述阀碟的端部和所述电子膨胀阀的阀体之间,并用于在所述电子膨胀阀中的电磁线圈失电时,驱使所述阀碟回位而关闭所述制冷剂通道。本发明的电子膨胀阀,通过采用第一弹簧向阀针提供回位时的驱使力,并在第一弹簧的驱使下,依靠阀碟与阀体之间的接触实现对制冷剂通道的关闭密封,可利用弹簧结构稳定性高的特点,保证阀碟的可靠回位,从而能够在失电时保证电子膨胀阀的密封性。


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    Title :

    Electronic expansion valve


    Additional title:

    电子膨胀阀


    Contributors:

    Publication date :

    2021-11-30


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




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