Title:
ELECTRONIC EXPANSION VALVE AND REFRIGERATION SYSTEM HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2018/099422
Kind Code:
A1
Abstract:
Disclosed are an electronic expansion valve and a refrigeration system having same. The electronic expansion valve comprises: a valve body (10) having a first valve port (10); a valve needle (20) having a close position and an open position, a second valve port (221) being provided at the bottom of the valve needle (20), the valve needle (20) having an accommodating space (23), a first overcurrent channel (211) and a second overcurrent channel (222), the first overcurrent channel (211) being communicated with the outside world, and the second overcurrent channel (222) being communicated with the second valve port (221); a valve rod (30) at least partially passing through the accommodating space (23); a first noise reducing part (40) provided in the accommodating space (23); a first sealing part (50) provided in the accommodating space (23) and located between the first sound adsorbing part (40) and the second overcurrent channel (222), a third overcurrent channel (51) being provided on the first sealing part (50), and the accommodating space (23) being communicated with the second overcurrent channel (222) by means of the third overcurrent channel (51); and a driving part for driving the valve rod (30) to move up and down. The electronic expansion valve can effectively solve the problem in the prior art of loud noise of the electronic expansion valve.
Inventors:
WANG YUDONG (CN)
SHU XIAOHUI (CN)
SHU XIAOHUI (CN)
Application Number:
PCT/CN2017/113893
Publication Date:
June 07, 2018
Filing Date:
November 30, 2017
Export Citation:
Assignee:
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD (CN)
International Classes:
F16K47/02; F16K1/00; F25B41/34
Domestic Patent References:
| WO2013170542A1 | 2013-11-21 |
Foreign References:
| CN103511636A | 2014-01-15 | |||
| CN102901279A | 2013-01-30 | |||
| CN105626876A | 2016-06-01 | |||
| CN102644785A | 2012-08-22 | |||
| JPH08135829A | 1996-05-31 |
Other References:
See also references of EP 3550193A4
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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