Electric water heater and its heating control method and heating control device

Abstract

The present invention proposes a heating control method for an electric water heater, comprising: S1, detecting that the electric water heater enters a reservation function mode, then obtaining the current temperature of the water in the tank of the electric water heater; S2, if the current temperature is lower than the target temperature, then calculating and The heating time period corresponding to the heating temperature rise rate; S3, judging whether the system clock is in the heating time period; S4, if the system clock is in the heating time period corresponding to the reserved water time, then control the electric water heater to heat; S5, heating the electric water heater When the preset temperature is reached, adjust and update the heating temperature rise rate; S6, repeat steps S2-S5 until the temperature of the water in the inner tank of the electric water heater reaches the target temperature. The heating control method of the electric water heater of the present invention can automatically adapt to the capacity specification of the electric water heater for heating control, and the scheduled heating is more accurate, and the method is simple and easy to implement. The invention also provides a heating control device for 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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