Title:
ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2021/218782
Kind Code:
A1
Abstract:
An electronic expansion valve, comprising a valve seat (11), a valve body component (14), and a valve core (182). The valve body component (14) comprises a valve body (141), and the valve body (141) is fixedly connected to the valve seat (11); the valve seat (11) comprises a valve port part (112); the electronic expansion valve comprises a first valve cavity (A) and a second valve cavity (B), the first valve cavity (A) is located on the upper side relative to the valve port part (112), and the second valve cavity (B) is located on the lower side relative to the valve port part (112); the electronic expansion valve has a first interface (1211) and a second interface (1221), the diameter of a valve port (1121) is less than that of the second interface (1221), and the diameter of the second interface (1221) is less than that of the second valve cavity (B); the valve port part (112) comprises a mating part (1123) and a flared part (1124), the mating part (1123) is closer to the first valve cavity (A) relative to the flared part (1124), and the flared part (1124) is closer to the second valve cavity (B) relative to the mating part (1123); the height h1 of the mating part (1123) is less than the height h2 of the flared part (1124), and the value of h1 satisfies: 0.15mm≤h1≤0.45mm; the inner diameter of one end of the flared part (1124) close to the first valve cavity (A) is less than the inner diameter of one end of the flared part (1124) close to the second valve cavity (B).
Inventors:
SHEN ZICHENG (CN)
HE WEIXIN (CN)
HE WEIXIN (CN)
Application Number:
PCT/CN2021/089109
Publication Date:
November 04, 2021
Filing Date:
April 23, 2021
Export Citation:
Assignee:
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD (CN)
International Classes:
F25B41/00
Foreign References:
| CN104930762A | 2015-09-23 | |||
| CN208458323U | 2019-02-01 | |||
| CN203657298U | 2014-06-18 | |||
| CN106369208A | 2017-02-01 | |||
| CN203670814U | 2014-06-25 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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