Liquid heating device and control method thereof

Abstract

The invention discloses a control method of a liquid heating device. The method includes: acquiring target temperature, controlling the liquid heating device for heating for a first preset time, suspending heating for a second preset time and acquiring a temperature variation value of liquid between the first preset time and the second preset time after the liquid heating device heats the liquid for the first preset time, and further acquiring a power-off temperature point or concurrent heating time of the liquid heating device; controlling the liquid heating device to continue heating when the present temperature of the liquid in the liquid heating device is lower than the power-off temperature point, controlling the liquid heating device to suspend heating when the liquid temperature reaches the power-off temperature point, and when the present temperature of the liquid is higher than the power-off temperature point and lower than the target temperature, calculating the concurrent heating time and controlling the liquid heating device to heat the liquid continuously for the concurrent heating time until the liquid temperature reaches the target temperature. According to the control method, errors between the liquid heating temperature and the target temperature are able to be decreased, and temperature control is executed more accurately. Meanwhile, the invention further discloses the liquid heating device.

Description

technical field [0001] The invention relates to the technical field of kitchen and bathroom appliances, in particular to a liquid heating device and a control method for the liquid heating device. Background technique [0002] In the prior art, an electric kettle is used to boil water. For water at a certain temperature such as 80°C, regardless of the voltage of the electric kettle used and whether the water volume is the same, the electric kettle will be powered off at the same temperature point, thus causing practical problems. The temperature of the water is very different from the target temperature, and the temperature control is not accurate. Only under the conditions of the same voltage and the same water volume, the temperature of the water can be controlled more accurately. In addition, when some electric kettles are heated, there is a temperature difference between the temperature detected by the temperature sensor in the electric kettle and the temperature of the ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, an electric kettle is used to boil water. For water at a certain temperature such as 80°C, regardless of the voltage of the electric kettle used and whether the water volume is the same, the electric kettle will be powered off at the same temperature point, thus causing practical problems. The water temperature is very different from the target temperature, and the temperature control is not accurate. Only under the same voltage and the same water volume, the water temperature can be controlled more accurately.

In addition, when some electric kettles are heated, there is a temperature difference between the temperature detected by the temperature sensor in the electric kettle and the temperature of the heated water. The temperature control of the kettle is even more inaccurate

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