Title:
VALVE CORE ASSEMBLY AND ELECTRONIC EXPANSION VALVE HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2022/135021
Kind Code:
A1
Abstract:
The present application provides a valve core assembly and an electronic expansion valve having same. The valve core assembly comprises: a valve head; an inwardly protruding flange portion being provided on an inner wall face of the valve head, and the flange portion dividing an inner chamber of the valve head into an upper chamber and a lower chamber; a screw penetrating into the valve head; an annular member sleeved at a lower end of the screw and located in the lower chamber, and an upper end face of the annular member being in contact with a lower end face of the flange portion, and the flange portion being provided with a balancing channel, the balancing channel enabling communication between the upper chamber and the lower chamber. By applying the technical solution of the present application, as a balancing channel is provided on the flange portion of the valve head, pressure balancing between the upper chamber and the lower chamber can be achieved, and there is no need to additionally provide other structures, thus avoiding the problem of difficulty in forming the balancing channel by drilling an inner hole on the screw, further reducing the machining difficulty of the balancing channel, and increasing the machining efficiency, and the problem of difficulty in arranging the balancing channel in the prior art can be solved.
Inventors:
HE YUCHEN (CN)
ZHAN SHAOJUN (CN)
CHEN YONGHAO (CN)
ZHAN SHAOJUN (CN)
CHEN YONGHAO (CN)
Application Number:
PCT/CN2021/133192
Publication Date:
June 30, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/36; F16K1/48; F25B41/34
Foreign References:
| CN109237846A | 2019-01-18 | |||
| CN111720565A | 2020-09-29 | |||
| CN104180567A | 2014-12-03 | |||
| CN203223617U | 2013-10-02 | |||
| CN206268472U | 2017-06-20 | |||
| EP1209327A2 | 2002-05-29 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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