Title:
PIPE ASSEMBLY CONNECTING STRUCTURE, PIPING ASSEMBLY, FOUR-WAY VALVE ASSEMBLY AND AIR CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/037635
Kind Code:
A1
Abstract:
A pipe assembly connecting structure (100), a piping assembly (300), a four-way valve assembly (400) and an air conditioning system. The pipe assembly connecting structure (100) comprises a stainless steel pipe (10) and a copper sleeve (20). The stainless steel pipe (10) comprises a connecting portion (11), and the copper sleeve (20) is arranged on the outer side wall of the connecting portion (11) in a sleeving manner; a solder accommodating layer (30) can be formed between the outer side wall of the connecting portion (11) and the inner side wall of the copper sleeve (20), and in an axial direction of the connecting portion (11), the thickness of the solder accommodating layer (30) in a radial direction of the connecting portion (11) is increased or decreased; or a step (40) is arranged at the end of the inner side wall of the copper sleeve (20) far away from the connecting portion (11), and solder abuts against the step (40). During the welding connection process of the copper sleeve and the stainless steel pipe, the connecting structure can prevent flow welding from occurring on the outer wall of the copper sleeve, and can further improve the welding quality between the copper sleeve and the stainless steel pipe.
Inventors:
WANG WENJIE (CN)
HUA LIGANG (CN)
LANG ZHUANG (CN)
FANG YI (CN)
ZHU FANGYING (CN)
LI SHUQIU (CN)
LIU HAIBO (CN)
HUA LIGANG (CN)
LANG ZHUANG (CN)
FANG YI (CN)
ZHU FANGYING (CN)
LI SHUQIU (CN)
LIU HAIBO (CN)
Application Number:
PCT/CN2021/113483
Publication Date:
February 24, 2022
Filing Date:
August 19, 2021
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16L13/007; F16L13/02; F24F13/02
Foreign References:
| CN112178308A | 2021-01-05 | |||
| CN213685654U | 2021-07-13 | |||
| CN213685372U | 2021-07-13 | |||
| CN103269821A | 2013-08-28 | |||
| CN204226888U | 2015-03-25 | |||
| CN208457378U | 2019-02-01 | |||
| CN204308363U | 2015-05-06 | |||
| KR20080095628A | 2008-10-29 | |||
| US4002285A | 1977-01-11 | |||
| CN106555910A | 2017-04-05 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (HANGZHOU) (CN)
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