Air pressure compensation control method and gas water heater

Abstract

The invention creatively discloses an air pressure compensation control method. The air pressure compensation control method comprises the following steps of a, igniting an igniter to a combustor of agas water heater; b, if yes, executing step b, detecting whether the flame exists or not by a flame detector, otherwise, executing the next step; c, increasing the ignition current of a fuel gas proportional valve for controlling the gas inlet pressure of the combustor of the fuel gas water heater by a controller, and increasing the minimum current of the fuel gas proportional valve; d, ignitingthe igniter to the combustor of the gas water heater; and e, detecting whether the flame exists in the flame detector, and if so, executing step b, and otherwise ending. The gas water heater can be normally ignited and is not easy to shut down after being switched to a low-load working state. The invention further discloses a gas water heater which comprises a water heater main body, wherein the controller, the igniter, the combustor, the fuel gas proportional valve and the flame detector are arranged in the water heater main body.

Description

technical field [0001] The invention relates to the technical field of gas water heaters, in particular to an air pressure compensation control method and a gas water heater. Background technique [0002] Existing gas water heaters tend to fail to ignite when the gas pressure is low or to turn off accidentally. Users often mistakenly think that the water heater is damaged due to low gas pressure, and then report the fault for repair, which increases the workload of maintenance personnel. Therefore, it is necessary to compensate the gas pressure when ignition fails or accidental flameout, so as to improve the success rate of ignition and prevent accidental flameout. In the ignition method disclosed in the Chinese patent gas water heater ignition method and device, the ignition process increases the success rate of ignition by increasing the opening of the proportional valve through the controller, but does not limit the number of times of increasing the opening, which is pron...

AI Technical Summary

Problems solved by technology

In the ignition method disclosed in the Chinese patent gas water heater ignition method and device, the ignition process increases the success rate of ignition by increasing the opening of the proportional valve through the controller, but does not limit the number of times of increasing the opening, which is prone to excessive user use. The second point is not lit, the opening of the proportional valve continues to increase cumulatively, resulting in a large opening, prone to deflagration, and a potential safety hazard; and this patent only considers the low ignition success rate when the gas pressure is low, but does not take into account the gas When the pressure is low, even if the ignition is successful, the water heater is easy to turn off after switching to a low-load working state; Inadequacies

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