Title:
ENERGY-SAVING SOLAR WATER HEATER
Document Type and Number:
WIPO Patent Application WO/2021/253313
Kind Code:
A1
Abstract:
Disclosed is an energy-saving solar water heater. The energy-saving solar water heater comprises a solar heat collecting pipe, a water tank, a hot water conveying pipe and a heat preservation barrel. The lower end of the hot water conveying pipe is connected to a water inlet of the heat preservation barrel, and a booster pump is installed on a water outlet pipe of the heat preservation barrel; and a two-position three-way electromagnetic valve is arranged at the upper end of the hot water conveying pipe, and the two-position three-way electromagnetic valve is provided with a water inlet in communication with a water outlet of the water tank, a water outlet in communication with the water inlet of the heat preservation barrel and an air inlet in communication with ambient air. The heat preservation barrel is additionally arranged for storing hot water for users to use. In a normal state, no water is present in the hot water conveying pipe, intermittent water injection from the water tank to the heat preservation barrel is achieved by means of state switching of the two-position three-way electromagnetic valve at the upper end of the hot water conveying pipe; and after water discharging of the water tank is completed, the upper end of the hot water conveying pipe is in communication with ambient air, and hot water in the pipe flows into the heat preservation barrel under the action of gravity, such that the hot water in the pipe is effectively used, and hot water waste is avoided. In the normal state, no water is present in the hot water conveying pipe, such that the problems whereby energy waste is caused by the long-time retention of hot water in the pipe, and the hot water conveying pipe is prone to frost cracking in winter are solved.
Inventors:
WANG QIANG (CN)
SONG SHUAIDI (CN)
LIU WEN (CN)
SONG SHUAIDI (CN)
LIU WEN (CN)
Application Number:
PCT/CN2020/096742
Publication Date:
December 23, 2021
Filing Date:
June 18, 2020
Export Citation:
Assignee:
UNIV NANTONG (CN)
International Classes:
F24S20/40; F24S50/00; F24S80/30
Foreign References:
| CN212157699U | 2020-12-15 | |||
| CN201926135U | 2011-08-10 | |||
| CN201593888U | 2010-09-29 | |||
| CN204757405U | 2015-11-11 | |||
| CN2469383Y | 2002-01-02 |
Attorney, Agent or Firm:
NANJING TONGZE PATENT AGENCY FIRM (LIMITED LIABILITY PARTNERSHIP) (CN)
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