Control method for self-adaptive air pressure of gas water heater

Abstract

The invention discloses a control method for self-adaptive air pressure of a gas water heater. The control method for the self-adaptive air pressure of the gas water heater comprises the steps of presetting a corresponding relation between proportioning valve current values and air pressure sensor pressure-tapping values, and dividing a fan current into at least one current compensation interval from small to large, wherein each current compensation interval corresponds to a target pressure value; during starting, using a controller for selecting the air pressure sensor pressure-tapping valuecorresponding to one proportioning valve current value from the corresponding relation between the proportioning valve current values and the air pressure sensor pressure-tapping values, using as initial target adjusting pressure, and operating the fan at the initial current; and then, when the controller determines that an air pressure sensor detects a change occurred between an outside air pressure tapping value and a preset baseline, using the controller for compensating the fan current. According to the control method for the self-adaptive air pressure of the gas water heater provided by the invention, the fan rotating speed can be adjusted in real time according to the air pressure change, and air required for the normal operation of the gas water heater is always guaranteed.

Description

technical field [0001] The invention belongs to the technical field of gas water heaters, and in particular relates to an adaptive air pressure control method for gas water heaters. Background technique [0002] During the operation of household gas instant water heaters, the flue gas generated by gas combustion is harmful to the human body, so it needs to be discharged outdoors in time; in the relevant standards of household gas water heaters, it is also clearly stipulated that gas water heaters must withstand wind pressure above 80Pa, the purpose is to maintain The gas water heater can also burn normally and discharge smoke outside when a certain amount of external wind is blowing backwards. However, in the actual use environment, especially for high-rise residents, the external wind pressure is greater and unstable. When the external wind blows back to a certain extent, the fan capacity is not enough to provide the air required for normal combustion, and the flue gas will...

AI Technical Summary

Problems solved by technology

However, in the actual use environment, especially for high-rise residents, the external wind pressure is greater and unstable. When the external wind blows back to a certain extent, the fan capacity is not enough to provide the air required for normal combustion, and the flue gas will exceed the standard, which will affect the gas consumption. Normal use of water heater

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