Water temperature control device and water temperature control method for gas water heater

Abstract

The invention provides a water temperature control method for a gas water heater. The method comprises the following steps of: A, detecting an environment temperature and a water inflow temperature; B, detecting water outlet flow; C, setting a proper water outlet temperature based on a preset algorithm according to the detected water outlet flow, the detected environment temperature and the detected water inflow temperature; D, calculating an opening control voltage of a proportional valve according to the proper water outlet temperature; and E, regulating the output gas amount according to the opening control voltage of the proportional valve so as to regulate fire power. The invention also provides a water temperature control device for the gas water heater. By the device and the method, the proper water outlet temperature can be automatically regulated according to the external condition without manual regulation.

Description

technical field [0001] The invention relates to the field of water temperature control of a gas water heater, in particular to a water temperature control device and a water temperature control method for a gas water heater. Background technique [0002] At present, most gas water heaters have a constant temperature function, that is, as long as the user sets the desired outlet water temperature, the outlet water temperature of the gas water heater will always remain at the set temperature. Usually, the display panel of this kind of gas water heater is provided with a switch button and a temperature adjustment button, and the user sets the bathing water temperature required by the button, and the control system of the gas water heater adjusts the required amount of gas according to the set water temperature, so that the outlet water temperature remains constant. in the set value. [0003] The above-mentioned gas water heater has the following disadvantages. Before taking a ...

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Problems solved by technology

[0003] The above-mentioned gas water heater has the following disadvantages. Before taking a bath, the user needs to set the required water outlet temperature according to the season, room temperature and water volume. It will also change (when the water volume is large, more heat is taken away, and the same water temperature feels low. Similarly, when the water volume is small, the heat taken away is small, and the water temperature is also high), because gas water heaters are installed outside the bathroom (mandatory regulations), It is very inconvenient for the user to manually adjust the water temperature after feeling whether the water temperature is appropriate during the bathing process

Moreover, many elderly users and some special users (such as blind people, etc.) have great difficulties in setting the outlet water temperature.

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