Title:
DRAIN VALVE SET
Document Type and Number:
WIPO Patent Application WO/2023/109332
Kind Code:
A1
Abstract:
Provided is a drain valve set, comprising: a connecting seat (10), the connecting seat (10) being provided with a water inlet/outlet channel (11) and an electromagnetic valve channel (12), and the electromagnetic valve (40) being communicated with the water inlet/outlet channel (11); an air inlet valve (20) provided on the connecting base (10), the air inlet valve (20) being provided with an openable/closeable air inlet (21), and the air inlet (21) being communicated with the water inlet/outlet channel (11) when the air inlet (21) is opened; an anti-freezing valve (30) provided on the connecting base (10), the anti-freezing valve (30) being provided with a drainage channel (31) and an openable/closeable drainage port (32), and the drainage port (32) being communicated with the drainage channel (31) when the drainage port (32) is opened; and an electromagnetic valve (40) mounted in an electromagnetic valve seat (44), the electromagnetic valve (40) being used for enabling the electromagnetic valve channel (12) to be communicated with or not communicated with the drainage channel (31). By providing the air inlet valve (20), a residual fluid in the water inlet/outlet channel (11) is delivered to the anti-freezing valve (30) so as to be drained from the drain valve set, so that the situation that the residual fluid in the water inlet/outlet channel (11) is frozen in a low-temperature environment is avoided; by providing the electromagnetic valve (40), the situation that the anti-freezing valve (30) drains water all the time when a fluid flows in the inlet/outlet channel (11) is avoided, thereby improving the performance and reliability of the drain valve set.
Inventors:
YU ZHOU (CN)
FENG ZHONGBO (CN)
KANG ZHIJUN (CN)
MA YANTING (CN)
ZHU FANGYING (CN)
FENG ZHONGBO (CN)
KANG ZHIJUN (CN)
MA YANTING (CN)
ZHU FANGYING (CN)
Application Number:
PCT/CN2022/128313
Publication Date:
June 22, 2023
Filing Date:
October 28, 2022
Export Citation:
Assignee:
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD (CN)
International Classes:
F16K11/10; F16K11/24; F16K31/06; F16K31/64
Foreign References:
| CN216739852U | 2022-06-14 | |||
| CN216479078U | 2022-05-10 | |||
| CN216743032U | 2022-06-14 | |||
| CN216158330U | 2022-04-01 | |||
| CN201740284U | 2011-02-09 | |||
| CN103954044A | 2014-07-30 | |||
| CN201795101U | 2011-04-13 | |||
| CN206338483U | 2017-07-18 | |||
| AU2016407200A1 | 2018-11-08 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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