Control system and method for reducing noise of electromagnetic cooking utensil and cooking utensil

Abstract

The invention discloses a control system and method for reducing noise of an electromagnetic cooking utensil and the cooking utensil. The control system is arranged on the electromagnetic cooking utensil and comprises an electromagnetic heating control circuit and a controller, wherein the electromagnetic heating control circuit comprises a resonance circuit, a synchronization circuit and a comparison circuit; the synchronous circuit detects the operating frequency of the resonant circuit, and generates a synchronization signal; the comparison circuit transmits a comparison signal to the controller; and the controller judges whether the received operating frequency of the electromagnetic cooking utensil is within a set threshold value interval or not, adjusts the heating power, and furtheradjusts the operating frequency. According to the control system and method for reducing the noise of the electromagnetic cooking utensil and the cooking utensil, the controller detects the operatingfrequency of the resonant circuit in real time and judges whether the operating frequency is within the set threshold value interval or not, if the operating frequency is not within the set thresholdvalue interval, the controller adjusts the heating power of the electromagnetic cooking utensil and further adjusts the operating frequency, so that the operating frequency avoids the hearing range of human ears, and electromagnetic noise is reduced; and the reliability is high, the cost is low, user experience is better, and a cooking mood of a user is pleased.

Description

Technical field [0001] The invention relates to the field of electromagnetic cooking, in particular to a control system, a control method and a cooking appliance for reducing noise of an electromagnetic cooking appliance. Background technique [0002] Electromagnetic cooking appliances use the principle of electromagnetic induction to heat cooking appliances. Since the operating frequency of the induction cooker is around 20KHz, the human hearing range is 20Hz~20KHz. After the user uses it for a period of time, due to the deformation of the internal structure of the induction cooker, the distance between the plates increases. The operating frequency of the induction cooker heating device will be lower than 20KHz, and harsh electromagnetic noise will be generated during the heating process, making the user feel noisy, and the user experience is very poor. Some of the prior art detects the noise level by a noise detection device, which exceeds a preset value When reducing the power...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the technical problems of difficult detection of electromagnetic noise, high cost and poor user experience in the prior art, and provide a control system, control method, and cooking utensil for reducing the noise of electromagnetic cooking utensils.

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