Electromagnetic heating system and control method of electromagnetic heating system
A heating system, electromagnetic technology, applied in the control of electromagnetic heating system, the field of electromagnetic heating system, can solve the problems of power consumption, standby power consumption exceeding the standard, the voltage is not easy to drop, etc., to achieve the effect of reducing the residual voltage
Inactive Publication Date: 2017-05-24
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
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However, the added EMC module will have a certain impact on the control circuit. For example, because the EMC module contains filter capacitors and filter inductors, when the induction cooker is powered off, there is still a certain charge on the filter capacitor, which makes the plug of the induction cooker The voltage is not easy to drop, resulting in the residual voltage of the plug of the induction cooker is still greater than 34V after the power is cut off for 1s, while Article 22.5 of GB4706.1-2005 stipulates that the voltage between the pins of the plug after the power is cut off for 1s should not exceed 34V
[0003] In the related technology, by adding a discharge resistor with an appropriate resistance value in the main circuit to achieve the purpose of rapid discharge, it is ensured that the residual voltage of the plug of the induction cooker does not exceed 34V after 1 second of power failure, but because the discharge resistor is connected to the main circuit, it will consume A certain power increases the standby power consumption, so there is a risk that the standby power consumption of the whole machine will exceed the standard
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[0021] 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.
[0022] The control method of the electromagnetic heating system and the electromagnetic heating system proposed according to the embodiments of the present invention are described below with reference to the accompanying drawings.
[0023] figure 1 is a flow chart of the control method of the electromagnetic heating system according to the embodiment of the present invention. Such as figure 1 As shown, the control method of the electromagnetic heating system includes the following steps:
[0024] S1, adding one to the voltage ...
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The invention discloses a control method of an electromagnetic heating system and the electromagnetic heating system. The control method comprises a step of adding one to a voltage zero-crossing signal counter at the interval of a first preset time to obtain a voltage zero-crossing signal counting value, and resetting the voltage zero-crossing signal counter when a voltage zero-crossing signal of an AC power supply is detected, a step of judging whether the electromagnetic heating system suddenly loses power according to the voltage zero-crossing signal counting value, and a step of controlling a fan in the electromagnetic heating system to work so as to rapidly reduce the remaining voltage of the plug of the electromagnetic heating system if a condition that electromagnetic heating system suddenly loses power is judged. According to the control method, when the electromagnetic heating system suddenly loses power, the remaining voltage of the plug of the electromagnetic heating system can be rapidly reduced.
Description
technical field [0001] The invention relates to the technical field of living appliances, in particular to a control method of an electromagnetic heating system and an electromagnetic heating system. Background technique [0002] In order to meet market requirements for electromagnetic compatibility of the induction cooker, usually, an EMC (Electro Magnetic Compatibility, electromagnetic compatibility) module is added on the electric control board of the induction cooker to solve the electromagnetic compatibility problem. However, the added EMC module will have a certain impact on the control circuit. For example, because the EMC module contains filter capacitors and filter inductors, when the induction cooker is powered off, there is still a certain charge on the filter capacitor, which makes the plug of the induction cooker The voltage is not easy to drop, so that the residual voltage of the plug of the induction cooker is still greater than 34V after the power is cut off ...
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Inventor 江德勇李宝刚曾露添
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD