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Electromagnetic heating electric cooker and cooking method thereof

A cooking method and technology of an electric rice cooker are applied to the utensils with an integral electric heating device, the structure of the cooking utensils, the heating device, etc., and can solve the problems of reduced IGBT service life, large IGBT inrush current, and poor rice taste, etc. The effect of reducing intermittent time, reducing working noise, and improving the taste of rice

Inactive Publication Date: 2018-08-07
JOYOUNG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this treatment method, the IGBT is hard-conducted with a large voltage when it is turned on, which causes a large impact current on the IGBT, resulting in a reduction in the service life of the IGBT and high operating noise; and the intermittent heating method, the temperature is relatively high during the heating period. High, the temperature drops during the period of stopping heating, that is to say, the temperature fluctuates greatly, and it cannot be kept in a relatively stable temperature range, and the taste of cooked rice is not good

Method used

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  • Electromagnetic heating electric cooker and cooking method thereof
  • Electromagnetic heating electric cooker and cooking method thereof
  • Electromagnetic heating electric cooker and cooking method thereof

Examples

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Embodiment 1

[0035] See Figure 1 to Figure 3, the present invention provides an electromagnetic heating electric rice cooker, comprising a control circuit board, an electromagnetic heating coil 600 and an inner container, the control circuit board comprising a drive circuit connected to the electromagnetic heating coil 600 and a control MCU 300, the drive circuit comprising a drive The power supply module 400, the control module 200 and the power switch tube 100, the control MCU 300 includes a first output port 31 connected to the drive power supply module 400, and a second output port 32 connected to the control module 200, and the output end of the drive power supply module 400 is connected to the control module 200, the output end of the control module 200 is connected to the power switch tube 100, the first output port 31 of the control MCU 300 outputs different control signals, so that the driving power module 400 generates at least two kinds of driving voltages, and the second output...

Embodiment 2

[0044] This embodiment provides a cooking method for an electromagnetic heating electric rice cooker, and the cooking method includes a high-power cooking stage, a low-power cooking stage, and a high-power switching stage.

[0045] see Figure 5 shown in the voltage envelope diagram, combined with image 3 understand. Wherein, the control method of the high-power cooking stage is as follows: control the first output port 31 of the MCU 300 to output the first control signal, drive the power supply module 400 to generate the second driving voltage, and control the second output port 32 of the MCU 300 to output different control signals. signal, so that the control module 200 drives the power switch tube 100 to switch between the saturated conduction state or the cut-off state, so that the continuous output of power is above 800 watts;

[0046] The control method of the low-power cooking stage is as follows: the first output port 31 of the control MCU 300 outputs the second con...

Embodiment 3

[0057] see Figure 6 , which is a flow chart of another embodiment of the cooking method of the electromagnetic heating electric rice cooker of the present invention, and its main difference from Embodiment 2 is that the cooking method further includes an aroma-increasing stage S31. Specifically, there is an aroma-increasing stage between steps S3 and S4 in the second embodiment, a low-power cooking stage is used, and the temperature is maintained at 92-95° C. for at least 1 minute. The low-power cooking stage can keep the temperature at 92-95°C. If it lasts for more than 1 minute in this temperature range, it can decompose the esters in the rice, greatly increase the aroma of the rice, and improve the quality of the rice. taste. Preferably, the maintaining temperature is 93° C., and the duration is 1-6 minutes. In this temperature point and time range, the aroma enhancement effect is the best.

[0058] see Figure 7 In the stage of water absorption, the temperature at the ...

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Abstract

The invention provides an electromagnetic heating electric cooker. The electromagnetic heating electric cooker comprises a control circuit board, an electromagnetic heating spool and an inner container, the control circuit board comprises a driving circuit and a control MCU which are connected with the electromagnetic heating spool, a driving power source module is used for providing at least twodriving voltages with different voltage values for a control module, the driving voltages are used for supplying power to the control module to work, and it can be achieved that the control module drives a power switch pipe with a low voltage to work in a connected state and drives the power switch pipe with a high voltage to work in a saturated connected state; during small power heating starting, the power switch pipe is controlled in an amplified connected state, shock of a current to the power switch pipe can be reduced, working noise is lowered, the intermittent time during small power heating can be shortened, continuous heating is achieved, so that temperature is kept within a certain range, and the mouthfeel of rice is improved. The invention further provides a cooking method of the electromagnetic heating electric cooker.

Description

technical field [0001] The invention relates to the field of kitchen appliances, in particular to an electromagnetic heating rice cooker and a cooking method thereof. Background technique [0002] Rice is one of the staple foods of human beings, and the rice cooker used to make rice has almost become a must-have kitchen appliance for all families. The process of making rice with an electric rice cooker mainly includes a soaking stage, heating to boiling stage, boiling stage, and stewing rice stage, so as to realize the ripening of rice. At present, the rice cooker using electromagnetic heating controls the electromagnetic resonance circuit through the IGBT switch tube to realize heating. In the cooking process of rice, different heating powers are required at different stages. In order to realize the low-power heating of the rice cooker, the wave-losing treatment method is often used, that is, selective intermittent heating is carried out in each cycle of the alternating cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J27/00A47J36/24
CPCA47J27/002A47J27/004A47J36/24
Inventor 朱泽春陈修伟崔卫民
Owner JOYOUNG CO LTD
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