Gas water heater control method and gas water heater

Abstract

The invention discloses a gas water heater control method. The method specifically comprises the following steps of S1, starting a preheating function of a gas water heater in a standby state; S2, starting a water pump of the gas water heater; S3, detecting a water flow on a main water path of the gas water heater, entering the step S4 when the water flow is larger than a preset starting water flow, and otherwise, keeping the standby state of the gas water heater; S4, igniting the gas water heater to enter a preheating mode; S5, detecting a water return temperature of the gas water heater, completing preheating treatment and closing the water pump when the water return temperature is larger than a preset preheating temperature, and otherwise, controlling a working state of the gas water heater through the change of the heat exchange amount of the gas water heater; and S6, keeping burning of the gas water heater when the water flow on the main water path of the gas water heater is larger than a preset shutdown water flow, and otherwise, turning off and closing the gas water heater. The invention further discloses the gas water heater. According to the control method, in the preheating process, rapid pump closing can be realized through recognizing hot water starting action of a user, so that electric power consumption is reduced, and the product intelligentization is embodied.

Description

technical field [0001] The invention belongs to the technical field of gas water heaters, and in particular relates to a gas water heater control method and a gas water heater. Background technique [0002] At present, zero-cold water gas water heaters have become the trend of the water heater industry because they can realize instant hot water, and are more and more popular among consumers. When the preheating function is activated, the built-in circulation pump of the gas water heater operates to drive the water stored in the external hot water pipe and return pipe to circulate and realize preheating. [0003] The cycle preheating process of conventional zero-cold water gas water heaters on the market is generally: after starting the preheating function, turn on the built-in water pump for circulating heating, and when the return water temperature reaches the programmed preheating temperature, it will automatically exit the preheating mode. However, in actual use of zero-...

AI Technical Summary

Problems solved by technology

However, in actual use of zero-cold water heaters, users often turn on the hot water faucet to use hot water during the preheating process of the pump. At this time, the tap water flows into the water heater, so that the return water temperature has not reached the programmed preheating temperature, and the preheating cannot be automatically exited. mode, the water pump is always on and consumes too much power

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