Title:
EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2019/105336
Kind Code:
A1
Abstract:
An expansion valve, comprising a valve body (10) and an air tank seat (42), and further comprising a spacer (60), the valve body (10) comprises a first wall portion (102), the first wall portion (102) forms a portion of an accommodation cavity (101), at least a portion of the spacer (60) is located in the accommodation cavity (101), the valve body (10) comprises a fluid cavity (105), the spacer (60) comprises a first outer wall portion (602) and a second outer wall portion (603), the second outer wall portion (603) faces the air tank seat (42), the first outer wall portion (602) faces the fluid cavity (105), the first outer wall portion (602), and the second outer wall portion (603) separate a majority of a pressure equalizing chamber and the fluid cavity (105), the expansion valve comprises a communication passage (111), the communication passage (111) is in communication with the pressure equalizing chamber and the fluid cavity (105), and the equivalent diameter, in the radial extension direction of the valve body, of the communication passage (111) is smaller than the equivalent diameter, in the radial extension direction of the valve body, of the fluid cavity. The expansion valve is easy to process and can reduce the temperature response rate of said valve.
Inventors:
WANG YUEXIANG (CN)
YAO ZHIBIN (CN)
YAO ZHIBIN (CN)
Application Number:
PCT/CN2018/117632
Publication Date:
June 06, 2019
Filing Date:
November 27, 2018
Export Citation:
Assignee:
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD (CN)
International Classes:
F25B41/31
Foreign References:
| CN204555456U | 2015-08-12 | |||
| CN105758072A | 2016-07-13 | |||
| CN102252469A | 2011-11-23 | |||
| CN102538316A | 2012-07-04 | |||
| JP2014149128A | 2014-08-21 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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