Title:
CONSTANT-VOLTAGE SWITCHING APPARATUS AND HOT WATER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/067362
Kind Code:
A1
Abstract:
A constant-voltage switching apparatus and a hot water system. The constant-voltage switching apparatus comprises: a main body (1), a flow channel (10) being provided inside the main body (1), and the flow channel (10) having an inlet (11) and an outlet (12); and a first blocking piece (30) and an attraction piece (20) capable of being in magnetic attraction with each other. The first blocking piece (30) is provided with a blocking position and a communication position that are arranged at a preset distance. When the differential pressure of two sides of the first blocking piece (30) in the direction from the inlet (11) to the outlet (12) is larger than the attraction force between the first blocking piece (30) and the attraction piece (20), the blocking piece (30) can move towards the communication position. When the differential pressure of two sides of the first blocking piece (30) in the direction from the inlet (11) to the outlet (12) is less than the attraction force between the first blocking piece (30) and the attraction piece (20), the first blocking piece (30) can move towards the blocking position. The constant-pressure switching apparatus and the hot water system can enable the flow channel to be kept in a communication state without pressure increase of a circulating pump, and meanwhile, prevent the problem of cold and hot water streaming.
Inventors:
WEI AIGUO (CN)
ZHANG CHENGJUN (CN)
FU ZIWEN (CN)
ZHANG CHENGJUN (CN)
FU ZIWEN (CN)
Application Number:
PCT/CN2016/099431
Publication Date:
April 27, 2017
Filing Date:
September 20, 2016
Export Citation:
Assignee:
A O SMITH CHINA WATER HEATER CO LTD (CN)
International Classes:
F24H9/20; F16K15/00; F24D17/00; F24H9/12
Foreign References:
| CN105202771A | 2015-12-30 | |||
| CN205090627U | 2016-03-16 | |||
| CN205332549U | 2016-06-22 | |||
| CN201636410U | 2010-11-17 | |||
| CN204478497U | 2015-07-15 | |||
| CN204313377U | 2015-05-06 | |||
| US20140097256A1 | 2014-04-10 | |||
| KR100721700B1 | 2007-05-25 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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