Electronic control system and control method of electric kettle

Abstract

The present invention discloses an electronic control system of an electric kettle and a control method. The system comprises a signal-processing unit, a signal-collecting unit and a heating unit; wherein, the signal-collecting unit comprises a water temperature detection circuit used to measure the temperature of water and a steam detection circuit used to measure the temperature of steam on thewater surface; the signal-processing unit receives the voltage information representing temperature acquired by the water temperature detection circuit and the steam detection circuit; by judging if the difference between the temperature of the water and the temperature of the steam on the water surface is less than a set temperature difference value or by judging if the temperature of the water detected in a set time interval is constant, the signal-processing unit transmits a control signal to the heating unit in order to control the electric on-off of the heating unit, thus realizing the automatic regulation of the temperature of boiled water under different environmental pressures in order to meet the requirement on boiled water judgment in different areas; the arrangement of a dry heating protector ensures that when heating elements heat until the temperature of the dry heating protector reaches 105 DEG C to 111 DEG C, the heating elements can be automatically cut off in order toprotect the electric kettle.

Description

technical field [0001] The invention relates to an electric heating technology, in particular to an electronic control system and a control method of an electric kettle. Background technique [0002] The appearance of the electric kettle has brought great convenience to people's life and work. The most common electric kettle on the market is to install a ring-shaped electric heating element in the abdominal cavity of the kettle body. If you don't pay attention, it is easy to damage the electric heating element; someone installs a mechanical alarm whistle at the lid or spout, but people still can't stay away. [0003] In order to solve the above-mentioned problems, various electric kettles and heating control technologies using thermostats for heating have appeared, such as the Chinese utility model patent "a temperature-controlled electric kettle" (CN2124644) disclosed on December 16, 1992. A temperature-controlled electric kettle is installed on the wall of an ordinary ele...

AI Technical Summary

Problems solved by technology

The control method uses a microprocessor to detect the temperature in the electric kettle, determine the system setting value, detect the on-off state of the heating circuit, judge the heat preservation state, prevent dry burning detection and control, heating and heat preservation, and perform an overall comprehensive control process. Control, using the continuous refresh of the microprocessor, realizes the precise control of each working process of the electric kettle, which is convenient to use, but in the case of circuit failure and extreme accidents, this control method cannot be used for safety protection, and there may be serious problems in actual use. Security risks

[0006] There are two major problems in the above-mentioned various solutions: one, when the above-mentioned electric kettle or the control method are applied to different regions (with different environmental pressures), they cannot adapt to the needs of the environment and effectively judge whether the water has been opened; And in extreme accidents, the above-mentioned electric kettle or control method lacks safety protection, and there may be serious safety hazards in actual use

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