Air pressure compensation control method and gas water heater

Abstract

The invention discloses a pressure compensation control method, which includes the following steps: step a, the igniter ignites the burner of the gas water heater; step b, the flame detector detects whether the flame exists, if so, execute step b, otherwise execute the following One step; step c, the controller increases the ignition current of the gas proportional valve for controlling the gas inlet pressure of the burner supplied to the gas water heater, and simultaneously increases the minimum current of the gas proportional valve; step d, the igniter sends The burner of the gas water heater is ignited; step e, the flame detector detects whether the flame exists, if yes, execute step b, otherwise end. The gas water heater can ignite normally, and it is not easy to turn off after switching to a low-load working state. Also disclosed is a gas water heater, which includes a water heater main body, and a controller, an igniter, a burner, a gas proportional valve and a 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

Images