Title:
ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2024/094029
Kind Code:
A1
Abstract:
An electronic expansion valve comprises a valve seat (10), a nut seat (20), a guide sleeve (30) and a valve core assembly (40). The valve seat (10) is provided with a valve cavity (101) and a mounting port (102) that are in communication with each other, the valve seat (10) is also provided with a valve port (103), the valve port (103) is in communication with the valve cavity (101), and the valve seat (10) is provided with a first limiting structure. The nut seat (20) is provided with a first end and a second end that are oppositely arranged, the first end of the nut seat (20) is arranged at the mounting port (102), and the first end of the nut seat (20) is provided with a second limiting structure. The guide sleeve (30) is arranged in the valve cavity (101), and the guide sleeve (30) is provided with a first end and a second end that are oppositely arranged. An outer peripheral surface of the first end of the guide sleeve (30) is in limiting fit with the first limiting structure, and an outer peripheral surface of the second end of the guide sleeve (30) is in limiting fit with the second limiting structure so as to limit the position of the guide sleeve (30). The valve core assembly (40) is sleeved on the guide sleeve (30), and the valve core assembly (40) is used to adjust the flow rate at the valve port (103). By means of the electronic expansion valve, the adjustment accuracy of a valve core assembly for the flow rate at a valve port is improved.
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| WO/2009/055977 | A MANUAL SAFETY VALVE |
| JP6968275 | A metering valve for controlling a gaseous medium |
Inventors:
HUANG HONGFENG (CN)
ZHAO JUN (CN)
CHEN YONGHAO (CN)
WANG MIAOMIAO (CN)
CHEN CANFENG (CN)
ZHAO JUN (CN)
CHEN YONGHAO (CN)
WANG MIAOMIAO (CN)
CHEN CANFENG (CN)
Application Number:
PCT/CN2023/128836
Publication Date:
May 10, 2024
Filing Date:
October 31, 2023
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K1/42; F16K1/32; F25B41/34
Domestic Patent References:
| WO2015143845A1 | 2015-10-01 | |||
| WO2020135162A1 | 2020-07-02 |
Foreign References:
| CN218523044U | 2023-02-24 | |||
| CN218326223U | 2023-01-17 | |||
| CN110836270A | 2020-02-25 | |||
| CN115013539A | 2022-09-06 | |||
| CN208041154U | 2018-11-02 | |||
| CN217301485U | 2022-08-26 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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