JPH03114183A - Induction heating cooking apparatus - Google Patents

Abstract

PURPOSE:To allow easy perception of the pan placing by installing a heating coil below a photo-penetrative insulation plate on which a pan to be induction heated is placed so as to face the pan, and furnishing a display means to display the part heated by this heating coil. CONSTITUTION:The body of an induction heating cooking apparatus is formed from a photo-penetrative heat-resistant insulation top plate 1 and an exterior fitting 2. Under the top plate 1 are accommodated a disc-shaped heating coil 3, which applies induction heating to a pan 5, and an insulative supporting plate 4 which supports the heating coil 3. An incandescent bulb 6 as display means is fixed onto this supporting plate 4 in the middle of the heating coil 3 to illuminate its central part through the top plate 1, and thus the user is informed of the part to be heated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an induction heating cooker that performs cooking by induction heating a metal cooking container.

BACKGROUND OF THE INVENTION Conventionally, this type of induction heating cooker has had a structure as shown in FIG. That is, since the alternating magnetic flux of induction heating is invisible, printing representing the heating area has been printed on the surface of the top plate 1 to indicate the heating area. Users relied on this printing to place the pot and cook. Furthermore, in the case of an induction heating cooker, the heating output level is not known to the user, unlike gas heaters with visible flames or electric heaters that emit red heat. Therefore, the display means 11 (sixth
In the case shown in the figure, the most commonly used LED bar graph) was used.

Problems to be Solved by the Invention Accordingly, in the conventional configuration, there was a problem in that the printing was hidden when the pot was placed, making it difficult to tell whether the odor was coming from the pot or not. On the other hand, because the output level is difficult to understand, you may fail to adjust the cooking temperature, especially when you are unfamiliar with the cooking process.Especially when there are multiple heating parts, it is difficult to tell at a glance which heating part corresponds to which display part. There was a problem.

The present invention is intended to solve the above-mentioned conventional problems, and a first object thereof is to make it easier to understand the part on which the pot is placed.

The second purpose is to provide a heating display similar to that of a gas cooking device.

Means for Solving the Problems In order to achieve the above-mentioned first object, the first means of the present invention is to provide an insulating board for placing a pan to be heated by induction, and a transparent insulating board for placing a pan to be heated by induction. The heating coil is provided with a heating coil disposed below the heat insulating plate so as to face the pot, and a display means for displaying the portion heated by the heating coil. A second means of the present invention for achieving the second object includes a translucent insulating plate on which a pot to be heated by induction is placed, and a translucent insulating plate disposed below the translucent insulating plate facing the pot. The heating coil has a heating coil arranged therein, and an output control means for controlling energization to the heating coil, and the operation of a display means arranged near the heating coil is controlled by the output of the output control means.

action The effect of this technical means is as follows.

That is, in the above-mentioned first means, a heating coil is disposed below the top plate facing the pot, and a display means for displaying the portion to be heated is provided near the heating coil. The display section displays when the induction heating cooker is operating, so you can see at a glance where to put the pot, and you can use it correctly even when the pot is left or in dim light. In addition, in the second means, the output level of the induction heating is lower than that of the conventional heating coil by sideways operation of the display means disposed near the heating coil by the output of the output control means that controls energization to the heating coil. It can be displayed in a way that feels like an instrument, and can prevent failures in adjusting the firepower. Moreover, when a plurality of heating parts are provided, it becomes easy to see at a glance which heating part corresponds to which display part.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. FIG. 1 is a sectional view of an induction heating cooker showing a first embodiment of the present invention. As shown in the figure, a translucent heat-resistant insulating top plate 1 and an exterior casing 2 form the main body of the induction heating cooker. Below the top plate 1, there is a disc-shaped heating coil 3 for inductively heating a pot 5, and an insulating support plate 4 for supporting the heating coil 3.
is stored. An incandescent light bulb 6 serving as a display means is fixed on the support plate 4 at the center of the heating coil/L/3, and illuminates the center of the heating coil/I/3 through the translucent top plate 1 to heat it. Make the part known to the user. In this case, the incandescent light bulb 6 serving as the display means only needs to emit light to the outside of the aircraft through the translucent top plate 1. Even if the lamp is filled with such things, there is no problem in insulting it.

Furthermore, since the incandescent light bulb 6 can be mounted below the top plate 1 and can be seen from above the body, the mounting of the heating coil 3 in particular does not need to be restricted by the height, and there is a high degree of freedom in mounting.

The top plate 1 needs to be translucent at least above the display means 6, but it does not need to be translucent over the entire surface, and can be made of a combination of an opaque heat-resistant insulating plate and a transparent pre-made glass. I can't hold back in any way.

A second embodiment of the present invention will be explained with reference to FIG.

In FIG. 2, the display means 6 is arranged so as to be located on the outer periphery of the heating coil/I/3. In this case, the display light illuminates the outer periphery of the heating section by the heating coil 3, so the first
Unlike the illustrated embodiment, even when the pot 5 is placed, the user can easily determine whether or not the pot is placed eccentrically. Furthermore, since it is separated from the bottom of the pot 6, it is less likely to receive heat from the pot 6, and the operating temperature of the incandescent light bulb 6 can be kept low, thereby achieving high reliability.

A third embodiment is shown in FIG. 3, and an embodiment in which the operation of the display means 6 is controlled by the output control means that controls the energization to the heating coil/L/3 will be described. That is, the main body of the induction heating cooker is formed by the translucent heat-resistant insulated top plate 1 and the exterior 2,
Below the top plate 1 is a heating carp/L/3 that heats the pot 5 by induction.
and an insulating support plate 4 that supports the heating coil 3. The incandescent light bulb 6 which is the display means is a heating carp/
It is fixed on the support plate 4 at the center of L'3, and the central part of the heating coil/l/3 is illuminated through the translucent top plate 1 to make the heated part known to the user. Further, on the printed circuit board 7 on which an output control means (not shown) for controlling the energization to the heating coil/L/3 is mounted, there is a connection for a lead wire for connecting the heating coil/L/3 to the incandescent light bulb 6. A terminal 8.8' is provided.

The operation of this embodiment will be explained below. When the conditions for starting the induction heating operation are met by the user's correct operation, an alternating current is supplied from the output control means to the heating coil 3 to start heating, and at the same time, an alternating current is supplied to the incandescent bulb 6 via the connection terminal 8'. Electricity is applied. Here, since the surface of the top plate 1 is printed to indicate the heatable area, even if the pot 6 is placed on the top plate 1 before induction heating starts, it will not be difficult to use. do not have. In order to change the heating output during cooking, the alternating current value to the heating coil 3 is substantially changed by the output control means on the printed circuit board T, and at the same time, the display level of the incandescent light bulb 6 is adjusted in accordance with the alternating current value. Change μ. Thereby, the display means can serve both to display the heated portion and the heating output, and it is possible to realize the same usability as a conventional heat source.

FIG. 4 is a top view showing an example of the arrangement of display elements common to each of the embodiments described so far, and the broken line indicates the outer periphery (heating portion) of the heating coil. The figure (a) corresponds to the embodiment shown in FIG. 1, in which the central part of the heating coil is illuminated. (
In (b), corresponding to FIG. 2, the outer periphery of the heating coil is illuminated in a continuous circle, and in (c), four display elements are arranged on the outer periphery. Many combinations can be considered for the location and manner of display, but there is no particular limitation as long as the location where induction heating is indicated is indicated through the top plate.

Effects of the Invention As described above, the induction heating cooker of the present invention has the following excellent effects.

(1) The parts that can be heated are displayed by lighting, so
Even if a large pot is placed, it is easy for the user to see if it is placed in the appropriate position.

(2) Even if the printing on the surface of the top plate wears out due to friction from the pot, the pot position is easy to see and is highly durable.

(3) By controlling the display with the output control means, it is easy to see which part is being heated, and the output level is also displayed at the same time, so that the same cooking feeling as a conventional heating appliance can be obtained, making it easy to use.

(4) Since the operating states of the heating parts can be easily distinguished, erroneous operation is eliminated in the case of an induction heating cooker having a plurality of heating parts.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an induction heating cooker showing a first embodiment of the present invention, FIG. 2 is a sectional view of an induction heating cooker showing a second embodiment of the invention, and FIG. 3 is a sectional view of an induction heating cooker showing a second embodiment of the invention. FIG. 4 is a top view of the main body showing an example of the arrangement of display means, and FIG. 6 is an external perspective view of the induction heating cooker showing a conventional example. . 1...Translucent large plate, 3...Heating coil,
5... Pot, 6... Display element.

Claims (2)

[Claims] (1) A translucent insulating plate on which a pot to be heated to be heated by induction is placed; a heating coil disposed below the translucent insulating plate facing the pot; An induction heating cooker equipped with a display means for displaying the parts to be heated. (2) A translucent insulating plate on which a pot to be heated by induction is placed, a heating coil disposed below the translucent insulating plate facing the pot, and energizing the heating coil. What is claimed is: 1. An induction heating cooker comprising an output control means for controlling the heating coil, and for controlling the operation of a display means disposed near a heating coil based on the output of the output control means.