Frequency-conversion microwave oven ground wire state judgment method and frequency-conversion microwave oven
A microwave oven and state-of-the-art technology, applied in household stoves/stoves, lighting and heating equipment, household heating, etc., can solve problems such as potential safety hazards, and achieve the effect of eliminating potential safety hazards
Inactive Publication Date: 2017-09-22
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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Problems solved by technology
[0002] In related technologies, when the grounding wire of the inverter of the inverter microwave oven is disconnected, the inverter will generate a very high voltage to act on the circuit board, such as the control panel, posing a potential safety hazard.
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[0049] Embodiments of the present invention are described in detail below, embodiments of which are illustrated in the drawings, wherein the same or similar reference numerals denote 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 only for explaining the present invention and should not be construed as limiting the present invention.
[0050] Please also refer to figure 1 and figure 2 , the frequency conversion microwave oven 100 according to the embodiment of the present invention includes a frequency conversion circuit 10 and a controller 30 , and the controller 30 is provided with a detection terminal 31 . The controller 30 includes a level detection module 32 and a judging module 33 . The level detection module 32 is used to read the level of the detection terminal 31 when the detection terminal 31 is in the pull-up resistor input mode. The judging module...
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The invention discloses a frequency-conversion microwave oven ground wire state judgment method. A frequency-conversion microwave oven comprises a frequency-conversion circuit and a controller, and the controller is provided with a detection end. The judgment method comprises the steps that the detection end is set to be a pull-up resistor input mode; the electrical level of the detection end is read; and when the electric level is a high electric level, it is judged that the ground wire state is abnormal. Besides, the invention furthermore discloses the frequency-conversion microwave oven. According to the judgment method and the frequency-conversion microwave oven, the detection end is set to be the pull-up resistor input mode, the electric level at the detection end is read, the ground wire state is obtained through the level of the electric level, and thus potential safety hazards can be eliminated.
Description
technical field [0001] The invention relates to household electrical appliances, in particular to a method for judging the state of the ground wire of a frequency conversion microwave oven and the frequency conversion microwave oven. Background technique [0002] In the related art, when the grounding wire of the frequency converter of the frequency conversion microwave oven is disconnected, a high voltage will be generated to act on the circuit board, such as the control panel, when the frequency converter is started, posing potential safety hazards. Therefore, how to detect whether the ground wire of the frequency converter is in good contact has become a problem to be solved. Contents of the invention [0003] Embodiments of the present invention provide a method for judging the state of a ground wire of a frequency conversion microwave oven and the frequency conversion microwave oven. [0004] A method for judging the state of the ground wire of a variable frequency m...
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IPC IPC(8): F24C7/08
CPCF24C7/087
Inventor 黎青海郑年重覃承勇艾军亮
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD