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Induction heating cooker and control method thereof

A technology of induction heating and cooker, which is applied in induction heating, induction heating devices, electric/magnetic/electromagnetic heating, etc., and can solve problems such as limiting the operating range

Active Publication Date: 2020-11-10
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the operation range of the operation is limited, and the display on the display part is changed according to the operation content.

Method used

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  • Induction heating cooker and control method thereof
  • Induction heating cooker and control method thereof
  • Induction heating cooker and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0069] refer to Figure 1 to Figure 15 Next, the configuration and operation of the induction heating cooker according to Embodiment 1 of the present invention will be described.

[0070] figure 1 It is an overall perspective view schematically showing the induction heating cooker. In the figure, the induction heating cooker 1 generally includes: an induction heating cooker main body 2 having a frame mainly composed of a sheet metal, a top plate 3 formed of a glass material or the like covering substantially the entire upper surface thereof, and arranged on the left and right sides. The heating parts 9 and 10, the other heating parts 11 arranged behind them, and the grill 4 for cooking. The heating parts 9 and 10 are arranged with high-frequency magnetic field generating coils 100 (hereinafter referred to as electromagnetic coils) at the bottom of the top plate 3 (refer to image 3 ) of the induction heating part (IH heating part). Furthermore, the other heating unit 11 may ...

Embodiment approach 2

[0232] Figure 16 It is a flowchart showing the processing procedure of load detection in the induction heating cooker according to Embodiment 2. In Embodiment 2, when a load is placed on any one or all of the heating parts of the induction heating cooker main body, the type of the load is discriminated and the maximum output power value is switched.

[0233] When a load is placed on the heating part 10 on the top plate 3 and the heating operation or power supply operation is started by the heating part 10, the detection circuits 60a and 60b of the detection part 60 detect the electrical characteristics of the loaded load, and the detection part 60 detects the electrical characteristics of the loaded load through the electrical characteristics. Probe load characteristics. The control unit 50 detects whether the load is a power receiving device A, a pan P as an object to be heated, or a non-heated object (small object, etc.), or whether there is a load, and switches the maximu...

Embodiment approach 3

[0250] Embodiment 3 is an embodiment in which the maximum output power value is switched between the induction heating operation mode and the non-contact power supply operation mode. Key references shown include Figure 17 The circuit diagram of the resonant circuit of the drive unit and the diagram showing the relationship between frequency and high-frequency current (output power) describe the switching of the maximum output power value by changing the drive frequency of the induction heating cooker in Embodiment 3.

[0251] Figure 17 (a) is a simplified circuit diagram of a resonant circuit including the drive unit 40 . in addition, Figure 17 (b) shows the relationship between the frequency f and the high-frequency current I obtained therefrom.

[0252] exist Figure 17 (a), the capacitor C is equivalent to Figure 7 The resonant capacitors 81, 83 and the reactance L are equivalent to the electromagnetic coil 100. Also, while in Figure 17 (a) not shown, but with ...

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Abstract

The induction heating cooker (1) is equipped with: a driving part (40), which supplies a high-frequency current to an electromagnetic coil (100) for generating a magnetic field; Detect the load characteristics of the load placed on the electromagnetic coil (100), and control it so that when the detection result of the detection part (60) determines that the load is an object to be heated, the maximum output of the output range of the drive part (40) The power value is set to the first range and the electromagnetic coil (100) is operated as an induction heating coil, and when it is judged to be a power receiving object, the maximum output power value of the output range of the drive unit (40) is set to In the second range, the electromagnetic coil (100) is used as a power supply coil to supply power to the power receiving object through electromagnetic induction. An appropriate amount of electric power can be efficiently supplied according to the target load.

Description

technical field [0001] The invention relates to an induction heating cooker for inductively heating a heated object such as a pan and a control method thereof, in particular to a high-frequency magnetic field from the induction heating cooker body to couple the heated objects placed on the induction heating cooker body through magnetic field coupling. An induction heating cooker with a non-contact power supply function for so-called non-contact power supply and a control method thereof. Background technique [0002] The induction heating cooker is a device that supplies a high-frequency current of 20 kHz to 100 kHz to a coil, and causes the magnetic flux generated by the coil to interlink with a metal object to be heated such as a pot or a frying pan, thereby inductively heating the object to be heated. The principle of induction heating is electromagnetic induction, so by arranging a power receiving device having a power receiving coil instead of an object to be heated, ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/12
CPCH05B6/062H05B2213/05
Inventor 竹下美幸永井孝佳松本贞行文屋润木下广一龟冈和裕
Owner MITSUBISHI ELECTRIC CORP
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