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induction heating cooker

A technology for induction heating and cooking appliances, which is applied to induction heating, induction heating devices, electric heating fuels, etc., can solve the problems of uneven temperature of food materials, uneven temperature of food materials, etc., and achieve the effect of suppressing uneven temperature and heat

Active Publication Date: 2022-02-25
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that even if the power supplied to each of the plurality of coils is the same, the temperature of the food is not uniform depending on the shape of the food, the placement position, etc., and the temperature of the food is uneven.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] (the whole frame)

[0030] figure 1 It is a perspective view which shows the whole structure of the induction heating cooker of Embodiment 1.

[0031] like figure 1 As shown, the upper part of the induction heating cooker 100 has a top plate 4 on which objects to be heated such as pots and pans into which ingredients are placed are placed. The top plate 4 is provided with a first heating port 1, a second heating port 2, and a third heating port 3 as heating ports for inductively heating the object to be heated, and a first heating member 11, a The second heating member 12 and the third heating member 13 can place an object to be heated with respect to each heating port and perform induction heating.

[0032] On the top plate 4, the rough mounting positions of the pans are formed corresponding to the heating ranges (heating openings) of the first heating member 11, the second heating member 12, and the third heating member 13 by applying paint, printing, etc. The cir...

Embodiment approach 2

[0107] In this Embodiment 2, the structure and operation|movement which detect the temperature difference of the thickness direction (vertical direction) of a food material are demonstrated.

[0108] Hereinafter, the structure and operation|movement of the induction heating cooker 100 in this Embodiment 2 will be demonstrated centering on the difference from Embodiment 1 mentioned above.

[0109] (structure)

[0110] Figure 8 It is a plan view showing the first heating member and the bottom surface temperature detection device of the induction heating cooker according to Embodiment 2.

[0111] Figure 9 It is a side cross-sectional view schematically showing the positions of temperature detection by the upper surface temperature detection device and the bottom surface temperature detection device of the induction heating cooker according to Embodiment 2. In addition, in Figure 9 In , some structures are omitted from illustration. in addition, Figure 9 A longitudinal s...

Embodiment approach 3

[0146] In the present third embodiment, an operation for detecting empty firing in which the heating operation is continued in a state in which no food material has been put into the object 5 to be heated will be described.

[0147] Hereinafter, the operation|movement of the induction heating cooker 100 in this Embodiment 3 is demonstrated centering on the difference from the said Embodiment 1 and 2. FIG.

[0148] Figure 11 It is a flowchart showing the heating operation of the induction heating cooker of Embodiment 3. Below, based on Figure 11 Each step is explained.

[0149] In addition, as an application of the induction heating cooker 100, there is a "preheating mode" for heating the temperature of the object 5 to be heated to a set temperature. Hereinafter, cooking modes other than the "preheating mode" are referred to as "normal mode".

[0150] (Empty burn detection action)

[0151] When the user turns on the induction heating cooker 100 and starts the heating ope...

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Abstract

The induction heating cooker of the present invention includes: a top plate on which an object to be heated is placed; a first coil and a second coil arranged under the top plate; a first conversion circuit on which The first conversion circuit supplies power to the first coil; the second conversion circuit is set independently from the first conversion circuit and supplies power to the second coil; the temperature detection device detects The first upper surface temperature and the second upper surface temperature, the first upper surface temperature is the temperature of the upper surface of the heated object at the position above the first coil, and the second upper surface temperature is the temperature of the second coil The temperature of the upper surface of the object to be heated at the position above; and the control device, the control device controls the driving of the first conversion circuit and the second conversion circuit so that the difference between the first upper surface temperature and the second upper surface temperature changes few.

Description

technical field [0001] The present invention relates to an induction heating cooker for inductively heating an object to be heated by using a plurality of coils. Background technique [0002] In a conventional induction heating cooker, for example, an induction heating cooking system including an inner heating coil, an outer heating coil, and a plurality of power supply units independently supplying a high-frequency current to each of the inner heating coil and the outer heating coil has been proposed. device (for example, refer to Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 5495960 Contents of the invention [0006] The problem to be solved by the invention [0007] In a conventional induction heating cooker, an object to be heated, such as an input food material, is induction-heated by a plurality of coils. However, there is a problem that even if the electric power supplied to each of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/12F24C7/02
CPCF24C7/02H05B6/062H05B2213/07H05B6/1272Y02B40/00
Inventor 文屋润小川孝中村辉男
Owner MITSUBISHI ELECTRIC CORP
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