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Patent Searching and Data


Title:
GAS HOT WATER SYSTEM AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/114726
Kind Code:
A1
Abstract:
Disclosed are a gas hot water system and a control method therefor. The gas hot water system comprises: a combustion device; a main heat exchange device provided at one side of the combustion device, such that the main heat exchange device can exchange heat with the combustion device; a main liquid return pipe connected to a liquid inlet end of the main heat exchange device; a main liquid outlet pipe connected to a liquid outlet end of the main heat exchange device; and a coupling structure connecting the main liquid return pipe and the main liquid outlet pipe, such that a part of a liquid in either one of the main liquid return pipe and the main liquid outlet pipe, can flow to the other by means of the coupling structure. In the gas hot water system, the coupling structure uses liquid in the main liquid return pipe to change a temperature difference between liquid in the main heat exchange device and liquid flowing out of an outlet end of the main liquid outlet pipe, such that the liquid in the main heat exchange device maintains a high temperature, and flue gas exchanging heat with the main heat exchange device is also maintained at a high temperature and is less likey to condense, thus the thermal efficiency of the gas hot water system is improved and the main heat exchange device is prevented from being corroded due to the condensation of flue gas.

Inventors:
ZHANG XIA (CN)
Application Number:
PCT/CN2020/111280
Publication Date:
June 17, 2021
Filing Date:
August 26, 2020
Export Citation:
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Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F24H9/12; F24H1/12; F24H9/18; F24H9/20
Foreign References:
CN209445584U2019-09-27
CN101769553A2010-07-07
CN110793187A2020-02-14
CN205119226U2016-03-30
CN109737605A2019-05-10
CN109489241A2019-03-19
CN108645008A2018-10-12
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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