Title:
ELECTRONIC EXPANSION VALVE AND MONITORING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/100451
Kind Code:
A1
Abstract:
An electronic expansion valve, comprising: a frame body (10) provided with an accommodating cavity (20) and a mounting cavity (30); an induction magnetic ring (40) movably disposed in the accommodating cavity in the height direction of the accommodating cavity, the mounting cavity being located at least on the outer circumferential side of the movement area of the induction magnetic ring in the accommodating cavity; and a Hall sensor (50) located in the mounting cavity and disposed around the accommodating cavity, the hall sensor having a plate body (52) and at least two sensing structures (51), the plate body is provided with at least two mounting recesses, the at least one sensing structures being disposed in the at least two mounting recesses in a one-to-one correspondence, the at least two mounting recesses being located at the same height, and the induction magnetic ring being always in the detection range of the sensing structures. The electronic expansion valve solves the problem in the prior art of inability to determine the rotation of a rotor. Also disclosed in a monitoring method for the electronic expansion valve.
Inventors:
SONG ZHIGUO (CN)
WANG FUGANG (CN)
DENG YUEZHONG (CN)
DONG SHENGHAI (CN)
WANG FUGANG (CN)
DENG YUEZHONG (CN)
DONG SHENGHAI (CN)
Application Number:
PCT/CN2021/127140
Publication Date:
May 19, 2022
Filing Date:
October 28, 2021
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/00; F16K31/04; F16K37/00
Foreign References:
| CN213809121U | 2021-07-27 | |||
| CN107763285A | 2018-03-06 | |||
| CN103326515A | 2013-09-25 | |||
| CN207398992U | 2018-05-22 | |||
| CN110332326A | 2019-10-15 | |||
| US20140261814A1 | 2014-09-18 | |||
| KR20100108481A | 2010-10-07 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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