Title:
ELECTRONIC EXPANSION VALVE
Document Type and Number:
WIPO Patent Application WO/2023/241260
Kind Code:
A1
Abstract:
An electronic expansion valve comprises a valve seat (10), a guide sleeve (20), a connecting pipe (30) and a welding ring (40). The valve seat (10) is provided with a valve cavity (11) and a side hole (12), the side hole (12) being communicated with the valve cavity (11). The guide sleeve (20) is arranged in the valve cavity (11) and comprises a matching section (22) in an axial direction, a first gap (51) being formed between the matching section (22) and the inner wall of the valve cavity (11). The connecting pipe (30) comprises an insertion section (32) and an inward extension section (31). The insertion section (31) passes through the side hole (11) and forms a second gap (52) with the inner wall of the side hole, the second gap (52) being communicated with the first gap (51). The inward extension section (31) extends into the valve cavity and is connected to the guide sleeve (20). The welding ring (40) is sleeved with the connecting pipe (30) and abuts against the outer wall of the valve seat (10) such that the melted welding ring (40) flows from the first gap (51) to the second gap (52) and fills the first gap (51) and the second gap (52).
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| WO/2022/127285 | NUT, ELECTRONIC EXPANSION VALVE, STOPPING STRUCTURE THEREOF, AND REFRIGERATION DEVICE |
| JPH02266169 | STOP VALVE |
Inventors:
ZENG QINGJUN (CN)
CHEN CHAO (CN)
YANG MAO (CN)
LIU WENJIN (CN)
CHEN CHAO (CN)
YANG MAO (CN)
LIU WENJIN (CN)
Application Number:
PCT/CN2023/092587
Publication Date:
December 21, 2023
Filing Date:
May 06, 2023
Export Citation:
Assignee:
GUANGDONG WELLING MOTOR MFG CO (CN)
International Classes:
F16K1/02; F16K1/32; F16K1/42; F16K31/04; F16K31/50
Foreign References:
| CN217502601U | 2022-09-27 | |||
| CN217502603U | 2022-09-27 | |||
| CN108692081A | 2018-10-23 | |||
| CN216200565U | 2022-04-05 | |||
| CN108506548A | 2018-09-07 | |||
| CN107289685A | 2017-10-24 | |||
| CN109931408A | 2019-06-25 | |||
| KR20060014135A | 2006-02-15 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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