High-power commercial induction cooker and power control method thereof

A technology for power control and induction cooktops, which is used in household stoves/stoves, induction heating control, electric/magnetic/electromagnetic heating, etc. problems, to meet the cooking needs, to promote the application of good prospects, good adaptability

Inactive Publication Date: 2017-09-05
NANHAI BRANCH OF SHENZHEN GUOCHUANG MINGCHU COMML EQUIP MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupled with the delay of the sensor, for high-power induction cookers, this induction cooker temperature control method has a large deviation in the temperature range of the controlled heating pot, especially when the temperature is heated at 200-300 °C, the deviation reaches 30-50 °C, which cannot meet the user's expectations. Accurate control of temperature requirements

Method used

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  • High-power commercial induction cooker and power control method thereof
  • High-power commercial induction cooker and power control method thereof

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Embodiment Construction

[0024] Such as figure 1 As shown, the present invention proposes a high-power commercial electromagnetic cooker at least including: a power supply module, an inverter circuit composed of two high-power switch tubes IGBT1 and IGBT2, and a resonant capacitor C1, a resonant capacitor C2 and a heating coil plate connected in series L1, and the LC resonant circuit composed of the pot arranged above the heating coil plate L1, connect the microcontroller of the control end of the switching tube IGBT1 and the switching tube IGBT2 through the driving circuit, and the microcontroller is generally realized by a single-chip microcomputer or a DSP controller , and the data port of the microcontroller is connected with one or more temperature sensors, which are thermistors or thermocouples, and are used to measure the temperature of the bottom of the pot.

[0025] The inverter circuit converts the output voltage of the power module into a high-frequency AC signal. The high-frequency AC curr...

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Abstract

The invention discloses a high-power commercial electromagnetic cooker and a power control method thereof. The method comprises the steps of: screening the temperature sampling value to obtain the instant temperature of the bottom of the pot; if the instant temperature of the bottom of the pot is lower than the preset working temperature, increasing The duty cycle of the PWM signal increases the output power of the heating coil disk, and on the contrary, decreasing the duty cycle of the output PWM signal of the driving circuit reduces the output power of the heating coil disk, so that the temperature at the bottom of the pot gradually decreases to the preset working temperature. By accurately obtaining the instant temperature at the bottom of the pot, the induction cooker can be controlled to keep warm within the corresponding temperature range, which can better meet the cooking needs of users, improve cooking efficiency and cooking effect, and has the advantages of simple implementation, user-friendly use, and adaptability Good, good prospects for promotion and application.

Description

technical field [0001] The invention relates to electromagnetic heating control technology, in particular to a high-power commercial electromagnetic cooker and a power control method thereof. Background technique [0002] In the general induction cooker heating system, after the input power is rectified and filtered, it will form a series resonant circuit with the bottom line of the pot, resonant capacitor and IGBT. Generally, the temperature of the bottom of the pot is detected by a thermistor or a thermocouple. The detected temperature is compared with the set value. When the temperature reaches the set value, turn off the electromagnetic heating system to stop heating to adjust the temperature of the heating pot. When the temperature of the pot body stops at a certain value of the set temperature, the electromagnetic heating system is started again. In order to avoid too high start-stop frequency of the electromagnetic heating system, the electromagnetic start-up tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C7/08F24C7/06H05B6/06H05B6/12
CPCF24C7/082F24C7/067H05B6/062H05B6/12H05B2206/02
Inventor 钟权颜定勇吴初明田春笋周捷
Owner NANHAI BRANCH OF SHENZHEN GUOCHUANG MINGCHU COMML EQUIP MFG CO LTD
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