A method for controlling the temperature of a gas water heater

Abstract

The invention relates to a temperature control method of a gas water heater, which is characterized in that: real-time collection of water flow data entering the gas water heater, acquisition of the fluctuation frequency M of the water flow within a unit cycle time, and if M≥M0, the maximum operating current of the proportional valve is reduced I=aI0, while controlling the proportional valve current and fan speed to adjust in real time according to the water flow data; where M0 is the high water flow fluctuation frequency threshold, a is a positive number, 0<a<1, and I0 is the standard maximum operating current of the proportional valve. The gas water heater temperature control method in the present invention can limit the maximum operating power of the gas water heater by reducing the maximum operating current of the proportional valve when the frequency of water flow fluctuations is high, that is, the adjustment range of the proportional valve is limited, and the corresponding limit To ensure the temperature of the water outlet, to avoid scalding the user. At the same time, the variation range of the outlet water temperature is also limited, and the stability of the outlet water temperature is improved.

Description

Technical field [0001] The present invention relates to the field of gas water heaters, and in particular, to a temperature control method of gas water heaters. Background technique [0002] The proportional valve in the gas water heaters typically include a gas dual channel having two openings different, corresponding to each channel is set to control the conduction and off, and the air outlet is connected to the gas double channel, and adjust the air opening. The degree opening adjustment component. When the gas water heater is operating, the solenoid valve action is controlled to open the channel with a small outlet. When the combustion load increases, the solenoid valve action is controlled to open the export larger channel. When the full load is burned, The solenoid valve action is controlled to simultaneously open the two channels simultaneously, i.e., through the control of the solenoid valve on the two channels, the adjustment of the gas water heater can be adjusted. Base...

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Problems solved by technology

However, in the case of rapid water flow fluctuations, the proportional valve opening adjustment frequency cannot be well adjusted according to the fluctuation frequency of the water flow, and the adjustment may not be in place or the instantaneous temperature may be too high, making it difficult to ensure the stability of the outlet water temperature. , it will also cause damage to the proportional valve

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