Method and device for controlling water boiling temperature

Abstract

The invention provides a method and device for controlling water boiling temperature. The method includes the steps of: determining a first difference value between an initial temperature of water to be boiled and a preset mode temperature; according to a relation between the first difference value and a first temperature constant, determining a first heating time length; after heating the water to be boiled for the first heating time length, determining a first current temperature of the water to be boiled; stopping heating the water to be boiled and recording a second current temperature of the water to be boiled after a first preset time length; determining a water temperature increment between the first current temperature and the second current temperature; and utilizing the water temperature increment to prejudge a heating time length, and controlling heating temperature of the water to be boiled. The method and device for controlling the water boiling temperature provided by the invention can reduce influence of an output power change on temperature control, and solve the problem of excessive heating.

Description

technical field [0001] The invention relates to the technical field of automation control, in particular to a method and device for controlling the temperature of boiling water. Background technique [0002] The electric kettle is an indispensable electrical appliance in the current furniture appliances. The electric kettle can heat the water in the electric kettle through the built-in heating plate to reach a temperature suitable for drinking. [0003] At present, how to control the boiling water temperature in the electric kettle has become a research hotspot. A common method is to control the temperature of the water to be boiled in the electric kettle in real time by calculating the output power of the electric kettle and the corresponding relationship between the output power and the heating temperature. However, temperature control using this method will be affected by the output power. When the output power changes, the corresponding heating temperature will change, ...

AI Technical Summary

Problems solved by technology

However, this method of frequently switching on and off components will seriously affect the service life of the internal components of the electric kettle. In addition, controlling the output power through chopping will cause serious electromagnetic interference, which will cause inconvenience to users.

At the same time, the above two common methods are inevitably affected by the delay of the temperature sensing package and the overshoot of the residual heat of the heating plate, resulting in excessive temperature heating.

[0004] In view of the above problems, no effective solution has been proposed

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