Water temperature fluctuation preventing fuel water heater

Abstract

The invention discloses a water temperature fluctuation preventing fuel water heater which comprises a heat exchanger, a water inlet pipe, a water outlet pipe and a combustor, wherein the water inlet pipe and the water outlet pipe are connected to the heat exchanger, and the combustor provides heat for the heat exchanger. The fuel water heater is characterized in that a heat storage device is connected to the water outlet pipe and comprises a shell, a heat exchange pipe arranged in the shell and connected with the water outlet pipe in series, and fins connected to the heat exchange pipe. By connecting the heat storage device to the water outlet pipe in series, when the water temperature suddenly rises, the heat in high-temperature water is absorbed and stored, and discomfort caused by too high water temperature is prevented; when the water temperature suddenly drops, the heat released in the heat storage device prevents water temperature from dropping. Meanwhile, through the combination of a memory alloy temperature control water valve, when the water outlet temperature is too high, the valve is automatically switched on to increase the water amount and prevent the water temperature from being too high; when the temperature is too low, the valve is automatically switched off to decrease the water amount and make the constant temperature quite precise.

Description

technical field [0001] The invention relates to the technical field of fluid heaters, in particular to a gas water heater that is resistant to fluctuations in temperature. Background technique [0002] The outlet water temperature of existing gas-fired instant water heaters is easily changed due to the influence of water pressure fluctuations, especially when the user switches on and off the machine during bathing and restarts, there will inevitably be a section of cold water, and the time of arrival of this section of cold water is often difficult to judge due to different installations by the user. Thereby cause sudden cold water in user's bathing process, have a strong impact on the comfort of bathing. [0003] In order to improve the comfort of bathing, there are mainly the following two solutions in the prior art: 1) an external preheating circulation device is connected to the gas water heater. The preheating circulation device needs to be equipped with a water pump, ...

AI Technical Summary

Problems solved by technology

The preheating circulation device needs to be equipped with a water pump, the structure is complicated, the installation is inconvenient, and the cost is relatively high, which is difficult for ordinary users to accept

2) A water tank is added to the outlet pipe of the gas water heater, but the cold water in the water tank needs to be discharged in advance when starting up for the first time, not only the heating speed is slow, but also it will cause waste of water resources, and it is inconvenient to use

In addition, the existing constant temperature water heater can accurately maintain the temperature when the water volume changes little, but if the water volume changes greatly or when it is turned on again, the outlet water temperature will fluctuate greatly, and the constant temperature effect is not ideal.

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