Electric cooker and heating control device and method thereof

Abstract

The invention discloses an electric cooker and its heating control device and method. The device comprises: a first acquiring module, used to acquire the voltage of AC mains input to the electric cooker; a first judging module, used to judge The voltage interval where the current voltage of the AC mains is located, wherein the voltage of the AC mains is divided into multiple voltage intervals; the second acquisition module is used to obtain the electric cooker when the current voltage of the AC mains is in the first voltage interval The current heating power of the electric cooker, the resonant frequency of the resonant circuit and the synchronous state of the resonant switch tube; the second judging module is used to judge the current heating power of the electric cooker, the resonant frequency of the resonant circuit and the synchronous state of the resonant switch tube to generate Judgment result; a control module, used to adjust the heating mode of the electric cooker according to the judgment result so as to protect the resonant switch tube. According to the device of the invention, the effective protection of the resonant switching tube can be realized, and the reliability of the electric cooker can be improved.

Description

technical field [0001] The invention relates to the technical field of cooking appliances, in particular to a heating control device for an electric cooker, an electric cooker, a heating control method for the electric cooker and a non-transitory computer-readable storage medium. Background technique [0002] The coil disk is an important component of the resonant circuit of the induction cooker, and its main parameters are mainly affected by the position of the magnetic strip and the winding method of the coil. The coil disk participates in the coupling inductance and coupling resistance of the resonant circuit, which directly affects the resonant frequency and synchronization state of the induction cooker. [0003] In actual use, the coil disk has a small coupling inductance but a large coupling resistance. When matching certain cookware, the operating frequency is very high and the turn-on loss of the IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transis...

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Problems solved by technology

[0003] In actual use, the coil disk has a small coupling inductance but a large coupling resistance. When matching certain cookware, the operating frequency is very high and the turn-on loss of the IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor) Very large, especially in high-voltage environments, the working conditions are even worse, which can easily cause the IGBT to work for a long time under the condition of high temperature and large impact current, which increases the probability of IGBT failure, thereby increasing the failure rate of the induction cooker and affecting the use of users.

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