Title:
ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2021/228013
Kind Code:
A1
Abstract:
An electronic expansion valve, comprising a valve seat (11), a nut assembly (12), a valve shaft part (22), a valve needle (21), and a magnet rotor assembly (27). The valve seat (11) comprises a valve port part (113); the nut assembly (12) is fixedly connected to the valve seat (11); the nut assembly (12) comprises a nut (121) and a connecting piece (122); the nut (121) comprises a first guide part (12a), an inner thread part (12b), and a second guide part (12c); the first guide part (12a) is closer to the valve port part (113) with respect to the inner thread part (12b), and the second guide part (12c) is farther away from the valve port part (113) with respect to the inner thread part (12b); the inner diameter of the first guide part (12a) is less than that of the second guide part (12c); the valve shaft part (22) is fixedly connected to the magnet rotor assembly (27) and comprises a valve shaft guide part (22b); the valve shaft guide part (22b) is in clearance fit with the second guide part (12c); the valve shaft part (22) can perform relative displacement, relative to the nut (121), in an axial direction along the nut (121).
Inventors:
WEI XIANRANG (CN)
Application Number:
PCT/CN2021/092626
Publication Date:
November 18, 2021
Filing Date:
May 10, 2021
Export Citation:
Assignee:
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD (CN)
International Classes:
F16K1/04; F16K1/32; F16K1/36; F16K1/42; F16K27/02; F16K31/06
Foreign References:
| CN213419900U | 2021-06-11 | |||
| CN208010998U | 2018-10-26 | |||
| CN209370494U | 2019-09-10 | |||
| CN209943654U | 2020-01-14 | |||
| CN106763989A | 2017-05-31 | |||
| JPH03239875A | 1991-10-25 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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