Title:
VALVE NEEDLE ASSEMBLY, ELECTRONIC EXPANSION VALVE AND REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/142223
Kind Code:
A1
Abstract:
A valve needle assembly, an electronic expansion valve and a refrigeration device. The valve needle assembly comprises a valve needle (500), a limiting sleeve ring (700), a bearing (600), a valve rod (300) and an elastic member (310). The valve needle (500) is provided with a first end (501) and a second end (502) opposite to each other. The first end (501) is detachably mounted on a valve port (104) of the electronic expansion valve, the limiting sleeve ring (700) is fixedly connected to the second end (502), and at least one of the second end (502) and the limiting sleeve ring (700) is provided with a mounting groove. The bearing (600) is provided in the mounting groove, and two end faces of an outer ring of the bearing (600) are limited and abutted by the valve needle (500) and the limiting sleeve ring (700), respectively. The valve rod (300) is movably inserted into an inner ring of the bearing (600) after passing through the limiting sleeve ring (700). One end of the elastic member (310) is connected to the valve rod (300), and the other end is connected to the bearing (600).
Inventors:
ZENG QINGJUN (CN)
CHEN CHAO (CN)
YANG MAO (CN)
CHEN CHAO (CN)
YANG MAO (CN)
Application Number:
PCT/CN2022/079336
Publication Date:
August 03, 2023
Filing Date:
March 04, 2022
Export Citation:
Assignee:
GUANGDONG WELLING MOTOR MFG CO (CN)
International Classes:
F16K1/36
Domestic Patent References:
| WO2020132967A1 | 2020-07-02 |
Foreign References:
| CN210920163U | 2020-07-03 | |||
| CN110345267A | 2019-10-18 | |||
| CN103912689A | 2014-07-09 | |||
| US20210031313A1 | 2021-02-04 | |||
| US5324000A | 1994-06-28 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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