Power control circuit and heating device

Abstract

The invention provides a power control circuit and a heating device. The power control circuit comprises a power module, a zero-cross detection module, a control module and a load driving module, wherein the power module is used for accessing a power signal, one end of the zero-cross detection module is connected to the power module, the zero-cross detection module is used for performing zero-cross detection on the power signal, a first end of the control module is connected to an input end of the zero-cross detection module, a second end of the control module is connected to an output end of the zero-cross detection module, the control module is used for determining a zero signal of a power frequency power supply and a corresponding zero signal value moment and generating a corresponding power control pulse signal according to the zero signal and the zero signal value moment, and the load driving module comprises a load unit, is connected to a third end of the control module, and is used for acquiring the power control pulse signal to control the power of the load unit. Through the scheme provided by the invention, the power of the heating device can be constant, and the technical effect that the heating device is generally used under a global voltage is achieved.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a power control circuit and a heating device. Background technique [0002] At present, the heating devices in the related art all change with the change of the input voltage, that is, the power of the heating device is unstable, especially when the heating devices in cooking utensils such as electric rice cookers and electric pressure cookers are heating, when the input voltage of the heating device If the voltage is too high, the power of the heating device will be relatively large, and the food in cooking appliances such as rice cookers and electric pressure cookers will overflow due to violent boiling. When the input voltage of the heating device is too low, the power of the heating device will be relatively small. , which reduces the mouthfeel of the cooked food, and the heating device in the related art cannot realize universal voltage across the globe. [000...

AI Technical Summary

Problems solved by technology

[0002] At present, the heating devices in the related art all change with the input voltage, that is, the power of the heating device is unstable, especially when the heating devices in cooking appliances such as electric rice cookers and electric pressure cookers are heating, when the input voltage of the heating device If the voltage is too high, the power of the heating device will be relatively large, and the food in cooking appliances such as rice cookers and electric pressure cookers will overflow due to violent boiling. When the input voltage of the heating device is too low, the power of the heating device will be relatively small. , which reduces the mouthfeel of the cooked food, and the heating device in the related art cannot realize the universal voltage of the world

[0003] Therefore, how to effectively solve the problem of unstable power of the heating device and realize that the heating device can be used universally under global voltage has become a technical problem to be solved urgently

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