Electric water heater, and heating control method and device of electric water heater

Abstract

The invention provides a heating control method for an electric water heater. The method comprises the steps that firstly, when it is detected that the electric water heater enters an appointment function mode, the current temperature of water in an inner container of the electric water heater is obtained; secondly, if the current temperature is smaller than the target temperature, a heating time quantum corresponding to the heating temperature rise rate is calculated; thirdly, whether a system clock is in the heating time quantum or not is judged; fourthly, if the system clock is in the heating time quantum corresponding to appointment water utilization time, the electric water heater is controlled to carry out heating; fifthly, when water is heated through the electric water heater to be at the preset temperature, the heating temperature rise rate is adjusted and updated; sixthly, the second step to the fifth step are executed repeatedly until the temperature of the water in the inner container of the electric water heater reaches the target temperature. According to the heating control method for the electric water heater, heating control can be carried out by automatically adapting to the volume specification of the electric water heater, appointed heating is more accurate, and the method is simple and easy to achieve. The invention further provides a heating control device of the electric water heater and the electric water heater.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a heating control method and a heating control device for an electric water heater, and an electric water heater with the heating control device. Background technique [0002] Existing water heaters are equipped with a reservation function for the convenience of users. According to the current water temperature, set water temperature, reservation time, clock, heating rate and other parameters, the water heater can be controlled to automatically heat the water to the set water temperature before the time scheduled by the user. However, different water heaters have different capacity specifications. At present, when the appointment function is realized, a dial switch is generally used, and the dial switch is placed in different gears to correspond to water heaters with different capacity specifications. In the existing method, the heating rate corresponds to the power...

AI Technical Summary

Problems solved by technology

In the existing method, the heating rate corresponds to the power and capacity of the heating tube, and the fixed value of the heating rate is generally given in the program for preset. When the water heater is actually working, it is often different from the actual heating rate due to the fluctuation of the power supply voltage. thereby affecting the accuracy of the appointment

In addition, the existing method needs to use a dial switch, which not only increases the cost of the device, but also causes inconvenience to production and after-sales maintenance due to the dialing problem.

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