Title:
ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2023/143024
Kind Code:
A1
Abstract:
An electronic expansion valve, comprising: a valve core assembly; and a valve seat (10). The valve seat (10) is provided with an accommodating cavity, and the valve core assembly is movably disposed in the accommodating cavity; the valve seat (10) is provided with a valve port (20), and the valve port (20) comprises a first cylindrical section (21) and a plurality of transition sections which are connected in sequence; the first cylindrical section (21) is disposed close to the valve core assembly; each transition section has a head end and a tail end disposed opposite to each other, and the head end of the transition section is disposed close to the valve core assembly; the diameter of the head end of the transition section connected to the first cylindrical section (21) in the plurality of transition sections is the same as the diameter of the first cylindrical section (21), and the diameter of the head end of each transition section is less than the diameter of the tail end of the transition section; the diameter of the tail end of the transition section close to the valve core assembly in two adjacent transition sections is the same as the diameter of the head end of the transition section distant from the valve core assembly. By adoption of the present technical solution, the problem in the prior art that a fluid forms a vortex at a valve port is solved.
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Inventors:
HE YUCHEN (CN)
LIU TONGHUI (CN)
XU GUANJUN (CN)
LIU TONGHUI (CN)
XU GUANJUN (CN)
Application Number:
PCT/CN2023/071383
Publication Date:
August 03, 2023
Filing Date:
January 09, 2023
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/00
Foreign References:
| CN217736277U | 2022-11-04 | |||
| JP2007032863A | 2007-02-08 | |||
| CN103097836A | 2013-05-08 | |||
| CN113566460A | 2021-10-29 | |||
| CN102713383A | 2012-10-03 | |||
| JP2019007550A | 2019-01-17 | |||
| DE2842799A1 | 1980-04-10 | |||
| JP2004340260A | 2004-12-02 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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