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Title:
EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2019/105334
Kind Code:
A1
Abstract:
An expansion valve, comprising a valve body (10) and an air tank seat (42). The expansion valve comprises an isolation element (50). The valve body comprises a first wall part (103), the first wall part (103) forming part of an accommodating chamber (101) where at least part of the isolation element (50) is positioned; and a fluid chamber (105), the fluid chamber (105) being positioned below the accommodating chamber (101). The isolation element (50) comprises a first outer wall part (503) and a second outer wall part (504), the second outer wall part (504) facing an air tank base (42), the first outer wall part (503) facing the fluid chamber (105), and the first wall part (103) being opposite to the first outer wall part (503). The isolation element (50) mostly separates a pressure-equalizing chamber (47) from the fluid chamber (105). The expansion valve comprises a communication channel (111) which is communicated with the pressure-equalizing chamber (47) and the fluid chamber (105), and the equivalent diameter of the communication channel (111) in a radial extension direction of the valve body is less than the equivalent diameter of the fluid chamber in the radial extension direction of the valve body. The expansion valve is convenient to process and can reduce the temperature response rate of a valve.

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Inventors:
WANG, Yuexiang (#301, 12th Street Hangzhou Economic&Technological Development Are, Hangzhou Zhejiang 8, 310018, CN)
Application Number:
CN2018/117593
Publication Date:
June 06, 2019
Filing Date:
November 27, 2018
Export Citation:
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Assignee:
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO., LTD. (#301, 12th Street Hangzhou Economic&Technological Development Are, Hangzhou Zhejiang 8, 310018, CN)
International Classes:
F25B41/06
Domestic Patent References:
WO2017145619A12017-08-31
Foreign References:
CN204555456U2015-08-12
CN205939839U2017-02-08
CN102692106A2012-09-26
CN106247704A2016-12-21
EP3076104A12016-10-05
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, 100004, CN)
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