Title:
ELECTRONIC EXPANSION VALVE AND REFRIGERATING SYSTEM PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2019/042140
Kind Code:
A1
Abstract:
Disclosed are an electronic expansion valve and a refrigerating system provided with the electronic expansion valve. The electronic expansion valve comprises: a valve body (10) provided with a first valve port (11); a valve needle (20), the bottom of the valve needle (20) being provided with a second valve port (221), the valve needle (20) being provided with an accommodation space (23), a first flow passage (211) and a second flow passage (222), the first flow passage (211) being located in a side wall of the valve needle (20), and the second flow passage (222) being in communication with the second valve port (221); a valve rod (30) capable of moving up and down to regulate the flow at the second valve port (221); a drive portion (80) for driving the valve rod (30) to move up and down; and an elastic component (100) arranged between the valve needle (20) and the valve rod (30) or arranged in the valve needle (20) and abutting between the valve needle (20) and the valve rod (30). When the valve rod (30) moves down relative to the valve needle (20), the elastic component (100) is compressed, and when the valve rod (30) moves up relative to the valve needle (20) and a fluid flows into the accommodation space (23) from the first valve port (11), the elastic component (100) applies an elastic force to the valve needle (20) so that the valve needle (20) abuts against the first valve port (11). The electronic expansion valve can effectively solve the problem of the poor effect of low-flow regulation of an electronic expansion valve.
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Inventors:
WANG YUDONG (CN)
Application Number:
PCT/CN2018/100866
Publication Date:
March 07, 2019
Filing Date:
August 16, 2018
Export Citation:
Assignee:
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD (CN)
International Classes:
F25B41/06
Foreign References:
| CN107044543A | 2017-08-15 | |||
| CN106870750A | 2017-06-20 | |||
| US20090293520A1 | 2009-12-03 | |||
| CN202149235U | 2012-02-22 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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