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Title:
ELECTROMAGNETIC VALVE HAVING HARD SEALING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2022/116550
Kind Code:
A1
Abstract:
An electromagnetic valve having a hard sealing structure, comprising a valve body (1) in which a fluid channel and an accommodating cavity are provided, and a valve assembly mounted in the accommodating cavity. The fluid channel is communicated with the accommodating cavity; the valve assembly comprises a liquid inlet base (3), a valve core (5) which works in conjunction with the liquid inlet base (3) and is used for closing or opening the fluid channel, and a driving mechanism driving the valve core (5) to reciprocate; a guide hole (303) allowing the lower end of the valve core (5) to extend into is formed on the liquid inlet base (3); several liquid inlet holes (301) arranged along the circumferential direction of the liquid inlet base (3) are formed on the middle section of the liquid inlet base (3); a valve core fluid channel (306) and a flow channel slope (305) located at the upper portion of the valve core fluid channel (306) for adjusting a flow rate are provided on the lower section of the liquid inlet base (3); the valve core (5) sequentially comprises a large-diameter section (507), a slope section (506), a small-diameter section (505), and a valve core end slope (505) from top to bottom; protrusion structures are provided on the lower ends of the liquid inlet base (3) and a rotor mounting base (4). Leakage is not easily caused by using a hard sealing assembly mode, thereby greatly prolonging the service life of the electromagnetic valve.

Inventors:
SU JIANLIANG (CN)
ZHANG HAIHONG (CN)
SHEN JUNJIE (CN)
Application Number:
PCT/CN2021/106658
Publication Date:
June 09, 2022
Filing Date:
July 16, 2021
Export Citation:
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Assignee:
SHANGHAI KELAI MECHATRONICS ENG CO LTD (CN)
SHANGHAI OKWAY INTELLIGENT EQUIPMENT CO LTD (CN)
International Classes:
F25B41/345; F16K1/54; F16K27/00; F16K31/06; F16K31/50; F16K39/02; F16K51/00
Foreign References:
CN213841418U2021-07-30
CN112361671A2021-02-12
CN212131323U2020-12-11
CN111188912A2020-05-22
CN110836271A2020-02-25
CN108087605A2018-05-29
US5782269A1998-07-21
JP2004270976A2004-09-30
CN111188912A2020-05-22
Other References:
See also references of EP 4033180A4
Attorney, Agent or Firm:
SHANGHAI KESHENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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