Electric cooker and heating control system and control method thereof

Abstract

The invention discloses an electric cooker and a heating control system and control method thereof. The system comprises a foam detection module, a capacitance detection chip, a heating power controlmodule and a main control chip; the foam detection module is arranged in an upper cover of the electric cooker and comprises at least one foam sensing component, wherein the capacitance value of the foam detection module changes when each foam sensing component senses steam foam generated by the electric cooker; the capacitance detection chip is connected with the foam detection module and generates a foam detection signal by detecting the change condition of the capacitance value of the foam detection module; the heating power control module is used for controlling the heating power of the electric cooker; the main control module is connected with the capacitance detection chip and the heating power control module separately and used for controlling the electric cooker to stop heating orreduce the power for heating through the heating power control module when the capacitance value change of the foam detection module is determined according to the foam detection signal, so that an overflow phenomenon is prevented from occurring on the electric cooker, full boiling is ensured, and the non-electric contact detection of the foam is achieved.

Description

technical field [0001] The invention relates to the technical field of electric appliances, in particular to a heating control system of an electric cooker, an electric cooker and a heating control method of the electric cooker. Background technique [0002] Related electric cookers are usually provided with a steam valve on the upper cover to break the foam through the steam valve, so that the steam foam becomes liquid backflow. However, if the electric cooker adds a little more water, the heating power is too high, or it is in a plateau area, when a large amount of steam foam is generated, it is difficult for the steam valve to turn all the steam foam into liquid backflow, which will cause a large amount of steam foam to overflow and affect the taste of rice. , and will stain the counter top, making it difficult to clean. [0003] The related technology proposes a way to detect overflow by adding electrodes on the cover of the electric cooker. However, the disadvantage of...

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Problems solved by technology

However, if the electric cooker is filled with a little more water, the heating power is too high, or it is in a plateau area, when a large amount of steam foam is generated, it is difficult for the steam valve to turn all the steam foam into liquid backflow, which will cause a large amount of steam foam to overflow and affect the taste of rice , and will stain the counter top, making it difficult to clean

[0003] The related technology proposes a way to detect overflow by adding electrodes on the cover of the electric cooker. However, the disadvantage of the related technology is that the electrodes are directly connected to the circuit as a conductor, so in order to avoid electric shock to the human body, an isolated power supply is used. Separated from the strong electricity, it increases the manufacturing cost, and the assembly process is also more complicated

In addition, in related technologies, low-power heating is used to prevent steam bubbles from overflowing, resulting in insufficient boiling during the heating process and poor rice taste

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