Patent ID: 11953244
Assignee: ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. An electronic expansion valve, wherein the electronic expansion valve comprises:
a valve body, the valve body having a valve port;
a valve head portion, movably provided in the valve body, the valve head portion comprising a valve head and a pressing sleeve, the valve head having an accommodating cavity, an end of the accommodating cavity close to the valve port having a bottom wall, a through hole being provided on the bottom wall, and the valve head being used for blocking the valve port;
a guide sleeve, provided in the valve body, the valve head portion being inserted in the guide sleeve;
a driving portion, movably provided in the valve body, an end of the driving portion penetrating the pressing sleeve, and a channel being provided on the end of the driving portion and the pressing sleeve; the channel, the accommodating cavity and the through hole together forming a balancing channel penetrating the valve head portion;
an elastic member, provided in the accommodating cavity, one end of the elastic member being cooperated with the bottom wall, and the other end of the elastic member being able to be compressed by the end of the driving portion; and
a sealing member, the sealing member being provided between the valve head portion and the guide sleeve.