Disinfection control method of gas water heater and gas water heater

Abstract

The invention discloses a disinfection control method of a gas water heater and the gas water heater. The disinfection control method of the gas water heater comprises the following steps that S1, enabling the water heater to be in a standby mode; S2, starting a high-temperature sterilization function, and entering a high-temperature sterilization mode; S3, starting a water pump installed on a hot water pipe in the gas water heater; S4, enabling a water flow sensing device installed on the hot water pipe to detect the real-time water flow of a water inlet of the hot water pipe, then judging whether the real-time water flow is larger than the start-up flow or not, and if yes, entering step S5; S5, opening a gas valve of the gas water heater, and igniting and heating water in the hot water pipe and a water return pipe of the gas water heater; S6, judging whether the return water temperature T1 is larger than the target sterilization temperature T2+the sterilization temperature difference deltaT3 or not, and if yes, entering step S7; and S7, closing the water pump and the gas valve, shutting down the gas water heater, starting a high-temperature sterilization and heat preservation mode, and calculating the sterilization duration.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a gas water heater disinfection control method and the gas water heater. Background technique [0002] After a long period of use in municipal water supply pipes and household water pipes, more harmful bacteria will usually grow in the pipes. For stagnant water that has not flowed for a long time in the pipeline, harmful bacteria will multiply in geometric multiples. The suitable temperature for general microbial growth is 28°C-37°C. The bathing water temperature of conventional gas water heaters generally does not exceed 50°C, and the tap water flow rate is fast. , causing harmful bacteria in tap water to be difficult to kill. [0003] Therefore, need badly a kind of disinfection control method of gas water heater to solve the above problems. Contents of the invention [0004] The present invention aims at at least to a certain extent to solve one of the existin...

AI Technical Summary

Problems solved by technology

For stagnant water that has not flowed for a long time in the pipeline, harmful bacteria will multiply in geometric multiples. The suitable temperature for general microbial growth is 28°C-37°C. The bathing water temperature of conventional gas water heaters generally does not exceed 50°C, and the tap water flow rate is fast. , causing harmful bacteria in tap water to be difficult to kill

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