Power control method for electromagnetic cooking appliance, electromagnetic cooking appliance and medium
A technology for power control and cooking utensils, applied in induction heating control, electric/magnetic/electromagnetic heating, electrical components, etc., can solve the problems of increasing the difficulty of chip processing, small frequency recognition range, etc., to reduce the amount of calculation and improve the timeliness Sex, control accurate effect
Active Publication Date: 2022-04-05
JOYOUNG CO LTD
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Problems solved by technology
Obtaining the voltage frequency in this way increases the processing difficulty of the chip, and the frequency recognition range is small. If the voltage sampling value is obtained frequently to obtain the voltage frequency and control the output power in the case of a large voltage frequency variation range, the electromagnetic cooking utensils are not used normally. Work
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[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0036] Electromagnetic cooking utensils may generally include cooking utensils capable of heating pans through electromagnetic induction, such as induction cookers. An electromagnetic cooking appliance usually includes a power control circuit, and the power control circuit includes a driving circuit and an oscillation circuit connected to the driving circuit....
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The invention discloses a power control method for an electromagnetic cooking appliance, an electromagnetic cooking appliance and a medium. The power control method includes: performing zero-crossing detection on an AC power supply, and performing zero-crossing detection interruption of the AC power supply every preset time to The AC power voltage is sampled and the number of interruptions is counted; according to the number of interruptions between two adjacent AC power zero crossings and the preset time, the time interval between two adjacent zero crossings is calculated; according to the time interval and time interval The AC power supply voltage obtained by internal sampling is determined to determine the AC power supply voltage parameters, and the output power of the power control circuit is controlled according to the AC power supply voltage parameters. Through the application, the output power can be controlled flexibly, so that the applicability of the electromagnetic cooking appliance is good, and damage to the electromagnetic cooking appliance caused by different AC power sources can also be avoided.
Description
technical field [0001] The invention belongs to the technical field of household electrical appliance control, and in particular relates to a power control method for an electromagnetic cooking appliance, an electromagnetic cooking appliance and a medium. Background technique [0002] The electromagnetic cooking appliances currently on the market are usually designed for a specific voltage. Generally used AC power supply voltage is 220V / 50Hz or 110V / 60Hz. Even if some products can work in a wide voltage range (such as 90V-265V), they cannot keep the power constant in this wide voltage range. In the voltage range (such as 90V-150V), only the power can be reduced to maintain the work, and the rated power cannot be maintained for heating. [0003] In the prior art, the voltage sampling value is obtained by sampling the input voltage; when the preset judgment period arrives, the number of zero-crossings of the voltage sampling value within the preset judgment period is counted...
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IPC IPC(8): H05B6/06
CPCH05B6/062
Inventor 朱泽春徐肇松谈嘉伟张伟
Owner JOYOUNG CO LTD