Patent · US Active

Electronic expansion valve

US9322582B2 · kind B2 · utility

3Cited by

3References

20Claims

0Family size

Assignee

ZHEJIANG SANHUA CO., LTD · CN

Inventors

Caiyi Zhan · 象珠镇, CN
Ze Yuan · Baoding, CN
Xianrang Wei · 象珠镇, CN

Key dates

Filing date	Aug 10, 2012
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Aug 10, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8696
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An electronic expansion valve is provided, which includes a main valve cavity. A sleeve is fixed in the main valve cavity. A lower end part of the sleeve is supported by a valve seat, and the lower end part of the sleeve surrounds a main valve port. A valve core seat is axially movably arranged in the sleeve. A lower part of the valve needle component extends into the sleeve to open and close the valve core valve port. A circumferential side wall of the sleeve is provided with a first communicating hole close to the main valve port and a second communicating hole away from the main valve port. The structural design of the electronic expansion valve may prevent an excessive impact on a valve core seat caused by the refrigerant with high pressure when the refrigerant flows forward, thereby preventing the eccentricity of the valve core seat.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.