Title:
VALVE BASE ASSEMBLY FOR ELECTRONIC EXPANSION VALVE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2015/143845
Kind Code:
A1
Abstract:
A valve base assembly for an electronic expansion valve and manufacturing method thereof, the valve base assembly comprising: a valve base (12) provided with a valve cavity (121); a second connecting tube (14) fixedly connected to the side wall of the valve base (12), wherein a first central axis (S1) of the second connecting tube (14) is perpendicular to a second central axis (S2) of the valve base (12); along any cross section on which the first central axis (S1) is located, the edge surface (1431) of the second connecting tube (14) does not surpass the inner circumferential surface (1211) of the valve cavity (121). The present valve base assembly ensures that the end part of the second connecting tube (14) does not extend into the valve cavity (121) and will not damage the integrity of the valve cavity (121), which is beneficial for improving the noise during the flow of refrigerant caused by irregular cavity shape. In addition, the coordinating length of the connecting tubes (13, 14) and the valve base (12) can be fully ensured, which is beneficial for improving welding strength, and the consistency of the size of the connecting tubes (13, 14) assembly can also be ensured.
Inventors:
ZHAN CAIYI (CN)
SHU XIAOHUI (CN)
ZHANG JINRONG (CN)
SHU XIAOHUI (CN)
ZHANG JINRONG (CN)
Application Number:
PCT/CN2014/086175
Publication Date:
October 01, 2015
Filing Date:
September 10, 2014
Export Citation:
Assignee:
ZHEJIANG SANHUA CO LTD (CN)
International Classes:
F25B41/06; F16K1/42
Foreign References:
| CN102032381A | 2011-04-27 | |||
| CN103133701A | 2013-06-05 | |||
| US20090293519A1 | 2009-12-03 | |||
| CN103836211A | 2014-06-04 | |||
| CN103836851A | 2014-06-04 | |||
| CN102620024A | 2012-08-01 | |||
| JP4947924B2 | 2012-06-06 |
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
北京林达刘知识产权代理事务所(普通合伙） (CN)
北京林达刘知识产权代理事务所(普通合伙） (CN)
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