Title:
ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2023/098766
Kind Code:
A1
Abstract:
An electronic expansion valve, comprising: a valve seat (10) and a valve needle (20), the valve needle being mounted in the valve seat; a valve core (30) arranged at one end of the valve seat, the valve core (30) having a valve port; a drive assembly, which drives the valve needle to axially move to open or close the valve port; and a spring sleeve (50), a spring (60) and a screw (70), the spring being mounted in the spring sleeve, the screw being movably mounted at one end of the spring sleeve, the valve needle being provided with a positioning step, and the other end of the spring sleeve being sleeved at the positioning step to position the other end of the spring sleeve by means of the positioning step. The electronic expansion valve can solve the technical problem in the prior art of a spring sleeve being prone to inclination during installation.
Inventors:
JIN JU (CN)
SHA HAIJIAN (CN)
WANG FUGANG (CN)
SHA HAIJIAN (CN)
WANG FUGANG (CN)
Application Number:
PCT/CN2022/135693
Publication Date:
June 08, 2023
Filing Date:
November 30, 2022
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/02; F16K1/32; F16K1/38; F16K1/42
Foreign References:
| CN216742868U | 2022-06-14 | |||
| CN216742872U | 2022-06-14 | |||
| CN107642927A | 2018-01-30 | |||
| CN112696499A | 2021-04-23 | |||
| CN112178223A | 2021-01-05 | |||
| CN109425150A | 2019-03-05 | |||
| US20080185452A1 | 2008-08-07 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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