Electronic expansion valve and air-conditioning system

By using bearings to connect the screw and valve needle in the electronic expansion valve, the structure is simplified, solving the problems of high cost and wear in existing electronic expansion valves. This results in cost reduction and extended service life, and improves the accuracy and stability of flow control.

WO2026124064A1 Publication Date: 2026-06-18ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO LTD
Filing Date
2025-11-06
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing electronic expansion valves have a complex structure and many parts, resulting in high costs and easy wear, which affects their service life.

⚗Method used

The screw and valve needle are connected by bearings, which simplifies the structure and reduces friction and wear. The bearings enable the axial movement of the screw and valve needle as a whole. Combined with elastic elements and limiting structures, the accuracy and stability of flow control are ensured.

🎯Benefits of technology

It reduces the cost of electronic expansion valves, extends their service life, improves the accuracy and stability of flow control, and reduces mechanical noise and wear.

✦ Generated by Eureka AI based on patent content.

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Abstract

An electronic expansion valve (100) and an air-conditioning system (200). The electronic expansion valve (100) comprises a valve body assembly (10) and a valve core assembly (20), wherein the valve body assembly (10) is provided with a valve port (101), and the valve core assembly (20) is movably mounted in the valve body assembly (10) and is used for controlling the open / closed state of the valve port (101). The valve core assembly (20) comprises a screw (21), a bearing (22) and a valve needle (23), wherein the bearing (22) is located between the screw (21) and the valve needle (23), and one end of the screw (21) runs through the inner ring of the bearing (22) and is fixedly connected to the bearing (22).
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