Title:
VALVE CORE ASSEMBLY AND ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2022/078233
Kind Code:
A1
Abstract:
A valve core assembly and an electronic expansion valve. The valve core assembly comprises: a spring sleeve (10) having a first end and a second end which are arranged opposite each other, the first end of the spring sleeve (10) being provided with an annular flange (11); a screw rod (20), one end of the screw rod (20) passing through the annular flange (11) and extending into the spring sleeve (10); a limiting assembly (30) located in the spring sleeve (10), the limiting assembly (30) comprising a gasket (31) and a lining (32), the gasket (20) being rotatably sleeved on the screw rod (31), the first end of the gasket (31) abutting against the annular flange (11), and the lining (32) being arranged on the screw rod (20) and located at the second end of the gasket (31) to limit the axial position of the gasket (31) relative to the screw rod (20); a valve needle (40), one end of the valve needle (40) extending into the second end of the spring sleeve (10); and a spring (50) located in the spring sleeve (10), one end of the spring (50) abutting against the gasket (31), and the other end of the spring (50) abutting against the valve needle (40).
Inventors:
HE YUCHEN (CN)
XU GUANJUN (CN)
JIANG CHAO (CN)
XU GUANJUN (CN)
JIANG CHAO (CN)
Application Number:
PCT/CN2021/122305
Publication Date:
April 21, 2022
Filing Date:
September 30, 2021
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/38; F16K1/00; F16K1/32; F16K1/48; F25B41/34
Foreign References:
| CN112178223A | 2021-01-05 | |||
| CN102042415A | 2011-05-04 | |||
| CN108361386A | 2018-08-03 | |||
| CN202166244U | 2012-03-14 | |||
| CN102042416A | 2011-05-04 | |||
| JP2003148643A | 2003-05-21 | |||
| KR20200057149A | 2020-05-26 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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