Electromagnetic heating cooking device and heating control circuit and heating control method thereof
A heating control circuit and cooking device technology, applied in the direction of electric heating device, induction heating control, electric/magnetic/electromagnetic heating, etc., can solve problems such as power jitter, achieve the effect of improving power jitter, solving advanced conduction and hard turn-on
Active Publication Date: 2017-08-08
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
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Problems solved by technology
Although this method is simple and easy to implement, it is prone to power jitter
Method used
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0028] The following describes the heating control method of the electromagnetic heating cooking device, the heating control circuit of the electromagnetic heating cooking device and the electromagnetic heating cooking device according to the embodiments of the present invention with reference to the accompanying drawings.
[0029] figure 1 It is a structural schematic diagram of a heating control circuit of an electromagnetic heating cooking device according to an embodiment of the present invention. Such as figure 1 As shown,...
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The invention discloses an electromagnetic heating cooking device and a heating control circuit and method thereof. The method comprises the steps of detecting a voltage cross-zero signal of an AC power supply; acquiring power shift according to a low-power heating instruction when the low-power heating instruction is received, and acquiring a heating value corresponding to currently-needed heating power according to the power shift; acquiring a heating zone and a heating stop zone according to the heating value; controlling a discharge unit to stop discharging in the heating zone according to the voltage cross-zero signal, and controlling a driving unit so that the electromagnetic heating cooking device does heating working at a preset power according to the voltage cross-zero signal; and controlling the discharge unit to discharge in the heating stop zone according to the voltage cross-zero signal, and controlling the driving unit so that the electromagnetic heating cooking device stops heating according to the voltage cross-zero signal, the electromagnetic heating cooking device is controlled according to the heating value corresponding to the needed heating power, and the purpose of improving power jittering during low-power heating is achieved.
Description
technical field [0001] The invention relates to the technical field of electromagnetic heating, in particular to a heating control circuit of an electromagnetic heating cooking device, a heating control method of an electromagnetic heating cooking device, and an electromagnetic heating cooking device. Background technique [0002] At present, electromagnetic heating cooking devices such as induction cookers and electric rice cookers mostly use the wave-dropping method to achieve low-power heating. In the low-power heating process, considering the leading conduction of IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), the power of about 1000W is often used, and it is heated with a certain duty cycle within the cycle. This enables low power heating. [0003] In the related technology, heating is performed continuously for A period within a fixed period, and heating is stopped for B periods to realize low-power heating, that is, the heating power is ...
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IPC IPC(8): H05B6/06
CPCH05B6/062H05B2206/02
Inventor 江德勇李宝刚王云峰曾露添
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD