Title:
NOISE REDUCTION SLEEVE AND ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2021/103752
Kind Code:
A1
Abstract:
A noise reduction sleeve and an electronic expansion valve. A noise reduction sleeve (60) is of a cylindrical structure, has a flow equalizing cavity (10), and is provided with multiple gaps (20) on the side wall; each gap (20) is in communication with the flow equalizing cavity (10); each gap (20) extends in the axial direction of the noise reduction sleeve (60), and has one end extending to the lower end surface of the noise reduction sleeve (60). The noise reduction sleeve (60) is used in an electronic expansion valve, and can reduce noise of the electronic expansion valve.
Inventors:
ZENG QINGJUN (CN)
HE YUCHEN (CN)
XU GUANJUN (CN)
HE YUCHEN (CN)
XU GUANJUN (CN)
Application Number:
PCT/CN2020/115626
Publication Date:
June 03, 2021
Filing Date:
September 16, 2020
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K47/02; F16K47/08
Foreign References:
| CN211175614U | 2020-08-04 | |||
| CN107917276A | 2018-04-17 | |||
| CN106195280A | 2016-12-07 | |||
| ES1025539U | 1994-01-16 | |||
| CN103453699A | 2013-12-18 | |||
| CN107289138A | 2017-10-24 | |||
| CN107435753A | 2017-12-05 | |||
| CN106545660A | 2017-03-29 | |||
| CN201687818U | 2010-12-29 | |||
| JPS63111376A | 1988-05-16 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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