Hot water system and control method for hot water system

Abstract

The invention discloses a hot water system and its control method, wherein the system comprises: a gas water heater and an electric water heater, the hot water outlet of the gas water heater is connected with the water inlet of the electric water heater through a hot water pipe; the cold water pipe, the cold water pipe One end is connected to the municipal water supply, and the other end of the cold water pipe is connected to the cold water inlet of the gas water heater; the instant heat thermostat mixing valve, the instant heat thermostat mixing water valve has a hot water inlet and a cold water inlet, and the hot water inlet is connected to the electric water heater The cold water inlet is connected to the other end of the cold water pipe, and the thermostatic mixing valve is used to heat the water flow of the hot water inlet when the water temperature of the hot water inlet is lower than the set temperature of the gas water heater. And carry out constant temperature control to the heated water flow. This system makes the water temperature more accurate, so as to achieve the purpose of stepless temperature adjustment, so that even when hot water is used for the first time, the temperature of the outlet water at the water point will not be low, which improves the comfort of water use and improves the user experience.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a hot water system and a control method for the hot water system. Background technique [0002] Water heaters are mainly divided into four categories, namely electric water heaters, gas water heaters, solar water heaters and air energy water heaters. The four types of water heaters have their own advantages and disadvantages, and are suitable for the needs of different groups of people. With the continuous improvement of people's living standards, people's requirements for hot water are also getting higher and higher. For example, the demand for hot water consumption is increasing, hot water is available when the tap is turned on, and the number of water points is increasing at the same time. [0003] However, in a hot water system connected in series with a gas water heater and an electric water heater, it is difficult to alleviate the influence of cold water in th...

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Problems solved by technology

[0003] However, in a hot water system connected in series with a gas water heater and an electric water heater, it is difficult to alleviate the influence of cold water in the pipeline on the outlet water temperature and the influence of water pressure fluctuations on the outlet water temperature due to the small size of the electric water heater (such as the small kitchen treasure), for example, when When the management between the gas water heater and the electric water heater is long, when the user uses the hot water faucet, the water that enters the electric water heater starts to be cold water, which will quickly reduce the water temperature in the electric water heater, so that the outlet water temperature of the electric water heater will drop greatly, affecting comfort In addition, when the total household water pressure fluctuates greatly, the cold water pressure fluctuation of the bathroom water point is smaller than the hot water pressure, resulting in hot and cold water temperature, which affects the use of hot water and leads to poor user experience

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