JP3405317B2 - Induction heating cooker - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an induction heating cooker, and more particularly to a display on a top plate.

[0002]

2. Description of the Related Art Induction heating cookers generate high-frequency magnetic fields in a heating coil to generate high-frequency magnetic fields, and generate Joule heat due to eddy currents in a pan (load) magnetically coupled to the heating coil, thereby heating the pan itself. It is a cooker that lets you cook. Therefore, unlike a gas cooker where a flame is visible or an electric heater in which the heating part glows red, there is a problem that the heating part cannot be visually recognized.

In order to solve this problem, the patent publication No. 2
No. 903561 describes that a heating lamp is turned on at the same time when a heating operation is performed to display a heating range, and the intensity of a heating output is displayed by changing the brightness of a light bulb by an output control means. ing. Further, in Japanese Unexamined Patent Publication (Kokai) No. 7-31279, a plurality of light emitting diodes for heat display are provided in an annular shape on the outer circumference of a heating coil and a light emitting diode for thermal power display is provided near the outside of the heating coil. It is described that the light emitting diode for display shows the light emitting state and the light emitting diode for heating display in the vicinity thereof emits light and the heating power becomes clear.

[0004]

Since the induction heating cooker cannot visually grasp the heating state, the power is turned on for safety and the heating cooking container is placed on the top plate to set the heating power. It is common to start heating. Various methods have been proposed for visually recognizing whether or not heating is performed as seen in the conventional example.

However, little attention is paid to the on / off state of the power source. That is, it is unknown whether or not the power is on even if the heating and cooking container is placed on the top plate. For that reason, it was necessary to check the power supply display section one by one.

However, since the display on the power source display is small and far from the heating part for heating the heating and cooking container, it is troublesome to check each one when busy or when cooking continuously.

The present invention solves such a conventional problem, and makes it possible to easily confirm whether the power is turned on or off and at the same time, whether the heating is performed or not can be easily confirmed. The purpose is to provide.

[0008]

In order to solve the above problems, in the induction heating cooker of the present invention, the power is turned on in the vicinity of the heating section on which the heated cooking container placed on the top plate is placed. The state of turning on and off is displayed by the display means. Further, when the cooking container to be heated is placed and heating is started, the display content is different from the previous display content.

As a result, the on / off state of the power can be easily confirmed in the vicinity of the heating and cooking container, and the presence or absence of heating can be confirmed, which improves usability.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a translucent top plate provided on an upper surface of a main body and an induction cooking vessel provided on the top plate are placed. Heating section for heating with a heating coil, a heating coil provided below the top plate corresponding to the heating section, and a central portion or a fan of a donut-shaped light guide.
The light guide is provided with a light source in the key portion, and display means for displaying the usage state and control means for controlling the display means are provided. When the control means is turned on , the power is turned on.
It is confirmed that a part of the heating part is
Alternatively, the display means is arranged so as to surround all of them.

When the power is turned on, the power is turned on.
That is, a part of the heating unit or
Surrounds everything, so you can easily visually confirm that the power is on.

Further, the cooking container to be heated is placed and heated.
Then, the contents of the display are changed.

Then, the cooking container to be heated is placed and heated.
When it is turned on, the contents of the display change visually so that the power-on state and the heating state can be easily checked.

Further, after the power is turned on, if the output setting is not made within a predetermined time, the control means turns off the power.

A transparent top plate provided on the upper surface of the main body
And place the heated cooking container provided on the top plate and guide
A plurality of heating parts that are heated by heating and below the top plate
The heating coil provided corresponding to the heating section, and the state of use
And a control hand for controlling the display means.
And a control means for controlling the power supply when the power is turned on.
The display means that the source is turned on.
Displayed in the vicinity and specified after the power is turned on
When there is a heating part for which the output setting is not made even after the time has elapsed
The control means to erase the display of the heating part
did.

[0017] An induction heating cooker there are a plurality of heating section for heating by induction heating, after the power is turned on, when there is a heating unit which also output setting predetermined time has elapsed is not performed, The control means erases the display of the heating part.

Further, in the induction heating cooker having a plurality of heating units for heating by induction heating, when the power is turned on, the fact that the power is turned on is displayed near at least one heating unit. I chose And since the display of the heating unit is set to the minimum necessary, power can be saved.
Further, the display content is changed from blinking lighting to lighting. Further, the display content is configured to be changed by changing the color. Since the contents of the display are displayed by blinking, turning on, and changing the color, it is possible to easily grasp visually.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the description of one embodiment of the present invention, a case of a so-called two-port stove having two heating parts by induction heating will be described.

The outline of this embodiment will be described below with reference to the drawings.

FIG. 1 is a perspective view of the induction heating cooker of this embodiment, and FIG. 2 is a sectional view of the induction heating cooker.

As shown in FIGS. 1 and 2, a case 1 constituting the main body, a translucent top plate 2 provided on the top surface of the case, and a cooking container to be heated provided on the top plate are placed and guided. A heating unit 3 for heating by heating, a heating coil 4 provided under the top plate 2 corresponding to the heating unit 3 for heating the heating unit, a control unit 5 for controlling the heating coil and display contents, and a heating unit 3. A temperature sensor 6 for detecting the temperature of the power source, a light emitting means 7 for displaying a usage state on the top plate 2, a power switch 8 for turning the power on and off, and a power display section 9 for displaying the on / off of the power switch 8. The configuration is such that an output setting unit 10 for setting the output, an output display unit 11 for displaying the output setting, and a second output display unit 12 are provided in the front part of the top plate 2. Also, 1
3 is a radiant heater, which is used when heating in an aluminum pan or copper pan that cannot be used for induction heating.

Specific examples will be described below.

(Embodiment 1) In this embodiment, the contents of the display are such that it can be visually recognized that the heating unit 3 is powered on at the same time when the power is turned on. In the present embodiment, the displayed contents are displayed as figures. In the above-mentioned configuration, when the power switch 8 is turned on and operated, the power source display section 9 is turned on and the light emitting means 7 emits light at the same time, and the light transmits through the translucent top plate 2 and the heating part 3 on the top plate. A graphic indicating that the power is turned on is displayed in the vicinity. The shape of the figure may be a rod-shaped light emitting body having a radius of the heating coil 4 as long as it can be easily grasped visually, but a figure surrounding a part or the whole of the periphery of the heating coil 4, For example, if a part of or all of a polygon such as a circle or a quadrangle is used, it becomes easy to visually grasp because the figure is large. In addition, since the place where the heating and cooking container is placed is clearly shown, the convenience is improved.

The figure may be displayed by lighting or blinking, and various colors such as red and blue may be used. In addition, when there are two heating parts by induction heating as in this embodiment, the display form of each heating part may be changed. For example, the heating part for fried food is displayed by blinking, and the heating part for pan is displayed by lighting. The color may be changed depending on the output of the heating unit.

Although the translucent top plate 2 is used in this embodiment, the entire top plate does not need to be translucent, and the portion necessary for displaying a graphic is translucent and the other parts are transparent. The portion may be opaque.

Next, the light emitting means 7 will be described. In the case of a rod-shaped display, there is a method of arranging rod-shaped light emitters, semiconductor light emitting elements such as light bulbs and LEDs in a line. Further, in the case of a display that surrounds a part or the whole of the heating portion, a method of arranging a ring-shaped light emitting device, a light bulb or a semiconductor light emitting element may be used, but since there is a risk of cost increase, a light guide plate is used as the light emitting means 7. The method used is practical.

FIG. 3 shows a case where the light emitting means 7 is provided with a doughnut-shaped light guide 14 and a light source 15 composed of a light bulb or a semiconductor light emitting element in the center thereof. When the power switch 8 is turned on, the light source 15 in the central portion is turned on, and this light is guided to the light guide body 14 and emitted in the peripheral portion. Then, the light emitted in the peripheral portion displays a figure in the shape of a top plate, which is a circle in this embodiment. In this case, if the diameter of the light guide 14 is set to be slightly larger than the diameter of the heating coil 4, the heating unit 3
Circles can be displayed around the.

Further, FIG. 4 shows a fan-shaped light guide 16 obtained by dividing the light guide 14 of FIG. 3, and the fan-shaped light guide 16 and the light source 17 provided in the key portion form one block. ,
By combining these blocks, a figure such as a semicircle can be displayed.

Although the case where the light emitting means 7 is a circular system has been described above, it goes without saying that various shapes such as a quadrangle other than the circular system can be obtained by combining the light guide plate and the light source.

As described above, according to this embodiment, it is possible to easily confirm the power-on state. However, there are cases where the power is turned on and it is not actually used.
In such a case, the following method may be used.

That is, the control unit 5 automatically turns off the power switch 8 when the output setting unit is not input within a predetermined time, for example, about 5 minutes after the power switch 8 is turned on. .

When there are two heating parts, the figures are displayed at both places when the power switch is turned on, but when only one is used and the other is left as it is, the predetermined time elapses. Do not display the heating part that is not used. At this time, if one heating unit is displayed, it is necessary to recognize that the power switch of the other heating unit is also in the ON state.

Further, when there are two heating parts, only one heating part may be displayed by turning on the power switch. In this case as well, if one is displayed, it is necessary to recognize that the other is powered on.

When the power is turned on, the heating section is not displayed, but is displayed only when the output setting section (switch for each heating section) 10 of the heating section to be used is turned on. Can be clarified. By doing so, power can be saved.

As described above, according to this embodiment, it is possible to easily visually check the power on / off state, so that it is possible to eliminate the trouble of having to check the power on / off.

(Second Embodiment) This embodiment is a continuation of the first embodiment, and when the output is set by the output setting unit 10 for cooking with the induction heating cooker, the graphic display on the tabletop is turned on. The feature is that the display is different from that of.

That is, when the operating condition is such that the power switch 8 is turned on and the operating condition is further advanced from the power-on condition and the output is set and the heating condition is reached, the display on the top plate is changed depending on the operating condition. It is a thing. In particular,
For example, when the display is displayed as a circle on the top plate, when the power switch 8 is turned on and turned on, the circle is displayed in blinking, and when further heated, the circle changes from blinking to lighting. is there. By doing so, it is possible to easily visually confirm that the power is turned on and that the heating is started.

As a method of changing the display, it may be possible to identify by a color change such that the color is changed to a bluish color when the power is turned on and to a reddish color when heated.

Further, the color may be changed by changing the light and shade of the color, such that the light turns red when the power is turned on and dark red when heated. Furthermore, lighting
You may change the usage status by blinking, color type, and color combination.

When the power is turned on, it lights up in blue,
It is also possible to display the change in the use state in various combinations so that it lights up in red when heated and flashes in red when heating ends.

The display of the difference in color may be controlled by the control unit 5 with a set of different color light sources being set, or a filter may be appropriately used. Further, the display of the shade of color can be easily performed by changing the output to the light source by the control unit 5.

(Embodiment 3) In this embodiment, the second output display unit 1 provided on the front portion of the top plate is used.
This is a method of using 2. When the power switch 8 is turned on and the power is turned on, it flashes and lights up, and when the output is set, it lights up. Usually, the second output display section is divided into several stages in order to show the magnitude of the output. Therefore, the lighting range is wide in the case of the maximum output, but the lighting range is narrow in the case of the minimum output. Therefore, even in this case, it is preferable to set the lighting range slightly large so that it can be easily visually confirmed. Also, blinking and lighting can be easily confirmed by displaying the maximum output.

As in the case of the second embodiment, the progress of cooking may be confirmed by blinking the color when the power is turned on when the heating is completed. As described above, various displays can be made by combining them.

According to the third embodiment, the progress of cooking can be easily confirmed.

In this embodiment, the case where there are two induction heating parts has been described, but when there is only one induction heating part, or when there are three or more induction heating parts, it is easy to carry out according to this embodiment. It can be carried out.

[0046]

As described above, according to the invention described in claim 1, when the power is turned on , the power is turned on.
That part or all of the heating section using the light guide
Since it is displayed by the display means so as to surround, it is possible to easily visually confirm that the power is on.

According to the second aspect of the present invention, the graphic display displayed on the top plate when the power is turned on is displayed in another form when the heating is started. It becomes possible to easily distinguish between the heating state and the heating state.

[Brief description of drawings]

FIG. 1 is a perspective view of an induction heating cooker according to an embodiment of the present invention.

FIG. 2 is a sectional view of the induction heating cooker.

FIG. 3 is a perspective view of a light emitting means of the induction heating cooker.

FIG. 4 is a perspective view of a light emitting means of the induction heating cooker.

[Explanation of symbols]

2 Top plate 3 heating section 4 heating coil 5 control unit 7 light emitting means

─────────────────────────────────────────────────── --Continued from the front page (56) Reference JP-A-7-312279 (JP, A) JP-A-56-71291 (JP, A) JP-A-64-63290 (JP, A) JP-A-64- 24386 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05B 6/12

Claims (8)

(57) [Claims] 1. A translucent top plate provided on the upper surface of the main body, a heating unit for placing a cooking container to be heated provided on the top plate to heat by induction heating, and below the top plate. Inside the doughnut-shaped light guide with the heating coil provided corresponding to the heating part
A light source is provided on the key portion of the core or the fan-shaped light guide to display a use state, and a control means for controlling the display means. When the control means is powered on ,
When the power is turned on, the heating unit using the light guide
An induction heating cooker configured to display the display means so as to surround a part or all of the above . 2. When the cooking container to be heated is placed and heated
The induction heating cooker according to claim 1, wherein the displayed contents are changed . 3. The induction heating cooker according to claim 1 or 2, wherein the control means turns off the power when the output is not set even after a lapse of a predetermined time after the power is turned on. . 4. A translucent top plate provided on the upper surface of the main body, and
Place the cooking container on the top plate for induction heating.
A plurality of heating units for further heating, and
Displays the heating coil provided corresponding to the heating unit and the usage status
And a control means for controlling the display means.
The control means is turned on when the power is turned on.
The fact that it has been inserted is displayed near the heating section by the display means.
In addition to displaying , if there is a heating unit for which the output setting is not made even after a lapse of a predetermined time after the power is turned on,
The said control means is an induction heating cooker which erase | eliminates the display of the heating part. 5. An induction heating cooker having a plurality of heating units for heating by induction heating, wherein the power source is turned on.
After that, the heating unit that the output setting is not made even after the lapse of a predetermined time
In some cases, the control means will clear the display of the heating part.
Unishi was induction heating cooker according to claim 1 or 2. 6. A plurality of heating units for heating by induction heating.
An induction heating cooker, when the power is turned on
Come, the heating of at least one said power supply is turned on
The display according to claim 1 or 2, which is displayed near the section.
Induction cooker. 7. The contents of the display can be changed from blinking lighting to lighting.
The induction heating cooker according to claim 2, which is configured to perform. 8. The induction heating cooker according to claim 2, wherein the displayed contents are changed in color.