Title:
ELECTRIC VALVE
Document Type and Number:
WIPO Patent Application WO/2020/200266
Kind Code:
A1
Abstract:
An electric valve, comprising a valve body part (10), a valve seat part (20), and a valve core part (30). The valve core part (30) is provided in an inner cavity of the valve body part (10). The valve core part (30) comprises a valve core (31). The valve core (31) is substantially tubular. The valve core (31) comprises a lower segment portion (311). The outer diameter of the lower segment portion (311) is set to be substantially uniform, and the inner diameter of the lower segment portion (311) is set to be substantially uniform. The valve base part (20) comprises a first sealing portion (211). An end of the lower segment portion (311) can be abutted against or separated from the first sealing portion (211). The valve body part (10) comprises a bushing part (12). The valve core part (30) comprises a second sealing portion (321). If the diameter of the axial projection loop of the outer edge of the second sealing portion (321) on the cross section of the lower segment portion is defined as D 1, the outer diameter of the lower segment portion (311) is defined as D 2, and the inner diameter of the lower segment portion (311) is defined as D 3, then 0.2 mm 2 ≤ D 1*(D 2-D 3) ≤ 6 mm 2. The electric valve can reduce internal leakage during shutoff of the electric valve.
Inventors:
LV MING (CN)
QIAN BAIJIANG (CN)
QIAN BAIJIANG (CN)
Application Number:
PCT/CN2020/082916
Publication Date:
October 08, 2020
Filing Date:
April 02, 2020
Export Citation:
Assignee:
ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP CO LTD (CN)
International Classes:
F16K1/02; F16J15/18
Foreign References:
| CN104791502A | 2015-07-22 | |||
| CN108019535A | 2018-05-11 | |||
| CN203756982U | 2014-08-06 | |||
| CN205207692U | 2016-05-04 | |||
| CN104964054A | 2015-10-07 | |||
| CN208519189U | 2019-02-19 | |||
| CN103133701A | 2013-06-05 | |||
| CN104791497A | 2015-07-22 | |||
| CN101166924A | 2008-04-23 | |||
| JP2017180639A | 2017-10-05 | |||
| JP2016118223A | 2016-06-30 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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