Title:
VALVE NEEDLE ASSEMBLY, AND ELECTRONIC EXPANSION VALVE HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2022/121587
Kind Code:
A1
Abstract:
A valve needle assembly, and an electronic expansion valve having same. The valve needle assembly comprises: a valve sleeve (10), the valve sleeve (10) having a cavity, and the valve sleeve (10) having a first end and a second end arranged opposite each other; a bushing (20) movably arranged in the cavity, the bushing (20) being in a limiting-fit with the first end of the valve sleeve (10), and the bushing (20) being used for driving the valve sleeve (10) to move; a spring (30) arranged in the cavity, with one end of the spring (30) being connected to the bushing (20), and the other end of the spring (30) being connected to the second end of the valve sleeve (10); and a sealing member (40) fixedly arranged at the second end of the valve sleeve (10), the sealing member (40) being used for blocking a valve port (83).
Inventors:
ZHAN SHAOJUN (CN)
LIU LEQIANG (CN)
XU GUANJUN (CN)
LIU LEQIANG (CN)
XU GUANJUN (CN)
Application Number:
PCT/CN2021/129092
Publication Date:
June 16, 2022
Filing Date:
November 05, 2021
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/00; F16K1/36; F16K1/42; F16K1/46; F16K27/02
Foreign References:
| CN104180567A | 2014-12-03 | |||
| CN109323006A | 2019-02-12 | |||
| CN211599545U | 2020-09-29 | |||
| CN210123017U | 2020-03-03 | |||
| US3942333A | 1976-03-09 | |||
| CN202011446606A | 2020-12-11 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P. C. (CN)
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