Title:
ELECTRIC VALVE
Document Type and Number:
WIPO Patent Application WO/2023/098532
Kind Code:
A1
Abstract:
An electric valve, comprising a valve seat (100), a valve needle (200), a first valve core (310) and a second valve core (320), wherein the valve seat is provided with a valve cavity (110) in which the valve needle is movably arranged; the first valve core is arranged in the valve cavity and is provided with a first through hole (311), the material of the first valve core is a non-metal material, and the first valve core is located between the valve needle and an opening of the valve cavity; the second valve core is arranged in the valve cavity and is provided with a second through hole (321), the material of the second valve core is a metal material, the second valve core is adjacent to the side of the first valve core that faces the valve needle, and the second through hole and the first through hole jointly form a valve port; and when the electric valve is in a fully closed state, the valve needle passes through the second through hole and makes contact with a hole wall of the first through hole to form a seal.
Inventors:
JIN JU (CN)
SHA HAIJIAN (CN)
WANG FUGANG (CN)
SHA HAIJIAN (CN)
WANG FUGANG (CN)
Application Number:
PCT/CN2022/133684
Publication Date:
June 08, 2023
Filing Date:
November 23, 2022
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/00; F16K31/02
Foreign References:
| CN216742844U | 2022-06-14 | |||
| CN213419962U | 2021-06-11 | |||
| CN209309334U | 2019-08-27 | |||
| CN107642927A | 2018-01-30 | |||
| CN204805577U | 2015-11-25 | |||
| JP2009097568A | 2009-05-07 | |||
| US20210310564A1 | 2021-10-07 |
Attorney, Agent or Firm:
BEIJING INTELLEGAL INTELLECTUAL PROPERTY AGENT LTD. (CN)
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