Electronic expansion valve
AssigneeZhejiang Sanhua Intelligent Controls Co., Ltd.
InventorXianrang Wei
Life of this patent
Estimating the term…
Abstract
An electronic expansion valve includes the valve needle screw assembly which also includes an outer edge guide section, the electronic expansion valve includes an inner edge guide section matched with the outer edge guide section, in the process of the action of the valve needle of the electronic expansion valve, the outer edge guide section of the valve needle screw assembly is matched with the inner edge guide section of the electronic expansion valve, to provide the guide for the valve needle, relatively reducing the deviation of the valve needle relative to the valve port, thereby reducing the eccentric wear of the valve needle.
Claims12
An electronic expansion valve, comprising a valve needle screw rod assembly, wherein the valve needle screw rod assembly comprises a valve needle, a valve needle sleeve, a spring washer portion, a spring and a screw rod assembly;
- the valve needle is fixedly connected to the valve needle sleeve, the valve needle sleeve comprises a peripheral wall portion and a matching portion, an inner diameter of the matching portion is smaller than an inner diameter of the peripheral wall portion;
- the screw rod assembly comprises a screw rod, a lower stop portion, a upper stop portion and a valve needle support portion, wherein the lower stop portion is between the upper stop portion and the valve needle support portion, the screw rod is connected with the lower stop portion, the upper stop portion and the valve needle support portion, the valve needle support portion is abuttable against the matching portion of the valve needle sleeve;
- wherein the lower stop portion is able to abut against the spring washer portion, the spring is mounted around the screw rod, one end of the spring abuts against the upper stop portion, and another end of the spring abuts against the spring washer portion;
- the valve needle screw rod assembly further comprises an outer edge guide section, the electronic expansion valve comprises an inner edge guide section that cooperates with the outer edge guide section.
Dependencies are inferred from the claim text.