Control method of pressurizing gas water heater and gas water heater

Abstract

The invention discloses a control method of pressurizing a gas water heater and the gas water heater. The gas water heater comprises a gas pressurizing device arranged on a gas inlet pipeline. After the gas water heater is started, if the actual water outlet temperature T in a certain time of combustion does not reach a needed temperature, the gas pressurizing device is controlled to start to pressurize the gas. After operation of the gas pressurizing device for a certain time r, if the difference temperature is reduced to a certain extent, it is judged that pressurization is effective, and the gas pressurizing device is controlled to operate to pressurize continuously; and if the difference temperature is not reduced or is not reduced to a preset value, it is judged that pressurization isineffective, the gas pressurizing device is stopped, and a failure alarm or a prompt. According to the control method and the gas water heater, the gas inlet pressure and the stability can be guaranteed, so that it is ensured that the optimum combustion working condition is matched, the water outlet temperature and stability are guaranteed, and the user washing experience is improved greatly.

Description

technical field [0001] The invention belongs to the field of water heaters, and in particular relates to a control method of a pressurized gas water heater and a gas water heater. Background technique [0002] A gas water heater is an instant water heater that burns fuel to transfer heat to water, and is becoming more and more popular among ordinary household users. However, the combustion effect of gas water heaters will be limited by the gas supply conditions of users' homes. Some users' homes may have problems with gas water heaters not working properly due to insufficient gas supply pressure of the overall pipe network or insufficient gas supply during peak gas consumption, affecting hot water production. Speed ​​and user bathing experience. [0003] At present, the maximum gas pressure in my country is about 3000Pa, but the gas pressure is seriously insufficient during the peak gas consumption, which will inevitably cause the following problems: First, the gas pressure...

AI Technical Summary

Problems solved by technology

However, the combustion effect of gas water heaters will be limited by the gas supply conditions of users' homes. Some users' homes may have problems with gas water heaters not working properly due to insufficient gas supply pressure of the overall pipe network or insufficient gas supply during peak gas consumption, affecting hot water production. The speed and user bathing experience

[0003] At present, the maximum gas pressure in my country is about 3000Pa, but the gas pressure is seriously insufficient during the peak gas consumption, which will inevitably cause the following problems: First, the gas pressure may be lower than 1000Pa during the peak gas consumption, resulting in the failure of the gas water heater to start normally; The working principle of gas water heaters, low air pressure directly affects the speed of hot water outlet; third, the poor stability of air pressure affects the stability of outlet water temperature, which will be directly felt by users during use, greatly affecting user experience

[0004] At present, there are no related gas booster water heater products in the market. When the pressure is low, the ratio of gas to air is only adjusted by controlling the proportional valve, and the pressure stability of the gas behind the proportional valve is improved by increasing the opening of the proportional valve. The effect of this method is very limited when the pressure is below 1000Pa

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