JPH05242959A - Induction-heated cooking device - Google Patents

Abstract

PURPOSE:To improve the temperature distribution of an induction-heated cooking device, increase the roasting area, and perform two or more types of cooking on one plate by individually controlling multiple heating coils. CONSTITUTION:The uniform power of 600W is applied to two heating coils 12, 13 to heat a roasting plate 16, a cooking object is mounted all over the plate 16, and roasting is started. When the cooking object is made just right for eating, the power of the coil 12 is weakened to 400W for heat retention. The heat capacity of the induction-heated plate 16 itself is small, and the temperature reduction of the plate 16 is quick on the coil 12 side weakened with the power. An additional object can be roasted because the power of the coil 13 is kept at the initial 600W. The power can be independently changed for the coils 12, 13, thus the heating power is changed for the right and left roasting faces, and different cooking can be made on each half area. The coils 12, 13 form two heating sections, thus a wide heating area is obtained, and there is little temperature irregularity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker used in general households.

[0002]

2. Description of the Related Art In recent years, induction heating cookers have become widespread in general households, and various special pots and grill plates have been sold. In the conventional induction heating cooker, the power consumption is high and 1200 W is the mainstream, and as a configuration, one heating coil and a temperature sensor are arranged under the ceramic top plate, and the temperature sensor is used for the top plate. The temperature of the pot or pot plate placed on it is detected and controlled via the.

[0003]

Therefore, when cooking a grill using a grill plate, not only can a small area of the upper surface of one heating coil be used, but a high wattage of 1200 W can be applied to one heating coil. However, the temperature distribution is poor and the usability is poor.

Therefore, the present invention solves the above-mentioned conventional problems. A first object of the present invention is to secure a wide baking area with a good temperature distribution and to enable more detailed cooking depending on the burned state of the food. Especially.

A second object is to use the baking plate surface efficiently according to the food to be cooked without reducing the overall power.

[0006]

In order to achieve the above-mentioned first object, the first means of the present invention is a body in which a plurality of heating coils are incorporated and a body mounted above the plurality of heating coils. And a heating plate which is arranged so that the power of each heating coil can be individually changed.

In order to achieve the above-mentioned second object, the second means of the present invention is constructed so as to control the total power of each heating coil constant when the power of each heating coil is variable. Is.

[0008]

According to the present invention, since the plurality of heating coils are provided by the above-mentioned first means, not only the heating area can be widened but also the power of each heating coil can be changed individually, so that strong power and weak power can be obtained. By using properly
It can be cooked finely.

According to the present invention, since the plurality of heating coils are provided by the above-mentioned second means, not only the heating area can be widened but also the total power of each heating coil can be made constant and varied, so that one heating coil is provided. The power of other heating coils is automatically changed by simply adjusting the power of, so it is possible to cook finely according to the grilled state of the food while maintaining constant power (whether large or small heat). ..

[0010]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 11 is a heating coil A12 and a heating coil B, which are installed side by side to generate lines of magnetic force.
13 and a control board (not shown) for controlling the heating coils 12, 13, and is a body formed of a heat-resistant resin such as PPS.
An inverter circuit (not shown) for supplying a high-frequency current to 2 and 13 is also provided. 14 is a support boss for fixing to the body 11 and for mounting the heating coils 12 and 13, 15 is a leg provided on the lower surface of the body 11, 16 is an iron casting, a clad material or stainless steel, and the heating coil 12, A supporting plate 1 which is a baking plate which heats up by the magnetic lines of force generated by 13 and cooks food, and which is provided on the bottom surface with several points.
It is mounted on the upper surface of the body 11 at 7.

The operation of the induction heating type cooker configured as described above will be described with reference to FIG.

Each of the two heating coils 12, 13 has 600
After applying power evenly to W (see FIG. 2A) and heating the baking plate 16, the food “for example, meat, vegetables” is placed on the whole and the baking is started.

When it becomes ready to eat, the power of the heating coil A12 on the left side is weakened to 400 W and used for heat retention (see FIG. 2 (b)). At this time, since the baking plate 16 itself generates heat by the induction heating method, the temperature of the baking plate 16 decreases quickly on the side of the heating coil A12 where the heat capacity is small and the power is weakened. The additionally baked product can be baked with the power of the heating coil B13 on the right half surface being the initial 600 W. Furthermore, since the powers of the left and right heating coils 12 and 13 can be changed individually, the heating power of the left and right grilling surfaces can be changed, so that separate cooking "egg and fried meat" can be performed for each half. In addition, the heating coils 12 and 13 and the heating unit are 2
Since there are individual pieces, the heating area is large and the temperature unevenness is small. As a method of varying the power, there are a method of varying the oscillation frequency of an inverter circuit that supplies a high-frequency current to the heating coils 12 and 13, a duty method of repeating the operation and stop of the inverter circuit, and the like.

As described above, according to this embodiment, not only the temperature distribution is good and the baking area is large, but also the baking plate 1
Since the grilling surface of 6 can change the power for each half and is an induction heating type, it is possible to propose an induction heating type cooker which has no heat capacity in the heater and is quick in responsiveness of power switching.

Although the number of heating coils is two in the above embodiment, the number of heating coils may be increased to three or four, and the point is that at least two heating coils are arranged in parallel to heat the baking plate.

(Embodiment 2) A second embodiment of the present invention will be described below mainly with reference to FIG. 3 focusing on the difference from the first embodiment.

When "yakisoba" is to be cooked, 600 W of power is evenly applied to each of the left and right heating coils 12 and 13 (see FIG. 3 (a)), so that the whole baking surface of the baking plate 16 is covered with soba balls. Put the spicy cabbage and pork on it and start cooking. If the soba ball is offset to the right, heating coil B on the right
When the power of 13 is increased to 700W, the power of the heating coil A12 is automatically reduced to 500W, and the total of 120
0 W is maintained (see FIG. 3B). In this way, the left and right power distributions of the two heating coils can be changed, and high heating power can be maintained and cooking can be performed without reducing the overall power.

That is, it is sufficient to change the power of one heating coil in accordance with the cooking without adjusting the power of each heating coil individually, so that the cooking is convenient.

As described above, according to this embodiment, not only the temperature distribution is good and the baking area is large, but also the total heating power is constant according to the cooking state by the induction heating system, and the baking plate 1
Since the heat power distribution on the left and right halves of 6 can be controlled only by controlling one heating coil, there is an effect that a sharp heat power feeling is obtained and the usability is good.

[0021]

As described above, according to the first means of the present invention,
The induction heating type has a good temperature distribution, a large baking area, and a plurality of heating coils can be individually controlled, so that there is an effect that two or more kinds of cooking can be performed on one baking plate.

In addition, according to the second means of the present invention, not only the induction heat type has a good temperature distribution and the baking area is large, but also the total power of a plurality of heating coils can be made constant by controlling one heating coil. Moreover, since the power distribution of the plurality of heating coils can be changed, there is an effect that cooking can be performed finely according to the deviation of the food.

[Brief description of drawings]

FIG. 1A is a sectional view of an induction heating cooker according to an embodiment of the present invention, and FIG.

FIG. 2 (a) is a diagram showing an initial thermal power state in the first embodiment. FIG. 2 (b) is a diagram showing a thermal power state after adjusting the heating coil A in the first embodiment.

FIG. 3A is a diagram showing an initial thermal power state in the second embodiment. FIG. 3B is a diagram showing a thermal power state after adjusting the heating coil B in the second embodiment.

[Explanation of symbols]

 11 Body 12 Heating Coil A (Heating Coil) 13 Heating Coil B (Heating Coil) 16 Baking Plate

Claims (2)

[Claims] 1. A body having a plurality of heating coils therein, and a baking plate mounted above the plurality of heating coils, wherein the power of each heating coil is individually variable. Induction heating cooker. 2. The induction heating cooker according to claim 1, wherein the total power of each heating coil is controlled to be constant when the power of each heating coil is variable.