JP2003339547A - Heating plate and pot for induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To meet the need of a heating method for efficiently heating and securing safety so as not to rise to a prescribed temperature or higher in abnormal heating in a nonmetallic pot heretofore not heatable in an induction heating cooker. <P>SOLUTION: Magnetic metal with a prescribed Curie temperature, and nonmagnetic metal are integrated and charged in a nonmetallic pot for use. The nonmetallic pot is thereby heated efficiently, and control at an optimum temperature and the prevention of abnormal overheating are performed by the self-temperature-control function of the heating plate. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in a non-metallic pot that could not be heated by an induction heating cooker, enables heating by an induction heating cooker and imparts a self-temperature control function. Accordingly, the present invention relates to a heating plate for an induction heating cooker and a non-metal pan for an induction heating cooker that prevent an unsafe state such as overburning or ignition of cooked food.

[0002]

2. Description of the Related Art In recent years, induction heating cookers have been widely used in general households because of their excellent features such as safety, ease of use, and high heat efficiency. In addition, a model compatible with 200V has been developed, and it is generally understood in terms of high thermal power.

An induction heating cooker, as shown in FIG.
Heating coil 22 arranged under the top plate 21
High-frequency magnetic flux generated by applying a high-frequency current to the eddy current is generated in the object 23 (pot) made of iron or stainless steel placed on the top plate, so that the pot itself directly generates heat. It is controlled by 24.

Further, a temperature sensor 25 for detecting the temperature of the pan is standardly provided on the lower portion of the top plate of the induction heating cooker, and a "overtemperature prevention function" for controlling the heating state according to the detected temperature is provided. Since it can be given, it can be used safely.

However, since the induction heating cooker in recent years has a high heat power, the cooked food is apt to burn, or if cooked with a small amount of oil, it may be heated to around the ignition temperature of the oil, which further increases the safety. There has been a demand for security.

Therefore, in recent years, as disclosed in Japanese Patent Nos. 2,917,526 and 3,079,573, it has been proposed to use a metal having a Curie point near the temperature used for actual cooking as the metal used for the pan. . Since metals lose magnetism above the Curie point, they are not heated by induction heating. Taking advantage of this feature, a pot in which the temperature of the pot itself is not heated above the Curie point (hereinafter referred to as "temperature-sensitive pot") is also being considered.

[0007]

Although the induction heating cooker has excellent characteristics as described above, due to the characteristics of the heating method,
There was a problem that cooking devices made of non-metallic materials such as clay pots and glass pots could not be used. In order to cope with such a problem, a pan capable of induction heating has been proposed, for example, by forming a silver thin film or the like on the bottom surface of a clay pot. However, when the base material of the pot is a non-metallic material such as ceramic, the heat conduction is poorer than that of metal, so the heat induced by the thin film does not easily transfer to the entire pot, which causes the temperature of the heat generating part to rise. There was a problem that it was easy to do. This problem was noticeable when the pot was baked in the air, and the phenomenon of disconnection or peeling of the heating layer was likely to occur.

In addition, a metal or the like capable of generating heat by induction heating is provided,
A heating plate that indirectly heats the pan by placing a pan that does not generate heat by induction heating on it is also proposed, but in this case as well, the heat conduction between the pan and the heating plate is poor, Is not sufficiently heated, or the temperature of the heating plate rises too much, and the heating is stopped by the temperature control function of the cooker body.

A method has also been proposed in which a stainless steel plate is placed in a non-metallic pot such as a clay pot and the plate is heated by induction heating. Besides, the temperature sensor of the cooker body generally detects the temperature through the top plate and the non-metal pan, which have very poor heat transfer, as shown in FIG. 10, so that the temperature of the plate rises abnormally. However, there was a fatal problem that the detection by the temperature sensor was delayed, resulting in an unsafe state.

The present invention is intended to solve such a conventional problem and efficiently heats a non-metallic pot such as a clay pot or a glass pot, and at the time of abnormal heating, the self-temperature of the heating plate. An object of the present invention is to provide a heating plate for an induction heating cooker and a non-metallic pan for an induction heating cooker, which ensure safety by preventing the temperature from rising above a predetermined temperature by a control function.

[0011]

In order to solve the above-mentioned problems, the present invention integrates a magnetic metal and a non-magnetic metal having a predetermined Curie temperature and puts them into a non-metallic pot to use. Efficiently heats non-metallic pots,
It is possible to provide a heating plate for an induction heating cooker and a non-metallic pan for an induction heating cooker, which can control the optimum temperature and prevent abnormal overheating by the self-temperature control function of the heating plate.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION According to the first aspect of the present invention, a heating plate for an induction heating cooker having a self-temperature control function in which a magnetic metal having a predetermined Curie temperature and a non-magnetic metal are integrated is used. It is put in a pot made of rice and heated. With such a configuration, it is possible to efficiently heat a non-metallic pot that could not be heated by an induction heating cooker in the related art, and provide a self-temperature control function for preventing abnormal heating.

According to a second aspect of the present invention, a magnetic metal having a predetermined Curie temperature, a non-magnetic metal, and a second magnetic metal having a Curie temperature higher than the predetermined Curie temperature are provided. A heating plate for an induction heating cooker, which is integrated by sandwiching the non-magnetic metal between the magnetic metal and the second magnetic metal, is put into a non-metallic pan to heat. With such a configuration, it is possible to suppress warpage during heating of the heating plate for the induction heating cooker.

The invention according to claim 3 of the present invention comprises two magnetic metals having a predetermined Curie temperature and a non-magnetic metal,
A heating plate for an induction heating cooker having a self-temperature control function, which is integrated by sandwiching a non-magnetic metal between the magnetic metals, is put into a non-metallic pan to heat. With such a structure, the heating plate for the induction heating cooker is further prevented from being warped during heating, and the self-temperature control function works in the same way on both sides, improving usability and preventing misuse. The occurrence of a safe state can be eliminated.

The invention according to claim 4 of the present invention comprises two kinds of magnetic metal and non-magnetic metal having different predetermined Curie temperatures, and the non-magnetic metal is sandwiched between the magnetic metals to be integrated. A heating plate for an induction heating cooker having a self-temperature control function is put into a non-metallic pot to heat it. With such a configuration, for example, there are two types of different heating plates on one heating plate, such as a temperature setting that suppresses charring when cooking for a long time and a temperature setting that suppresses over-charging and ignition when cooking a pottery. It is possible to add a self-temperature control function.

The invention according to claim 5 of the present invention is based on the fact that, in two kinds of magnetic metals, one Curie temperature is set to 100 ° C. or lower and the other Curie temperature is set to 100 ° C. or higher. With such a configuration, when the heating plate is installed with the surface having a Curie temperature of 100 ° C. or lower facing down, the water in the pan does not boil regardless of the heating power setting of the induction heating cooker body. In cooking that requires long-time simmering, cooking can be performed more safely, and if the heating plate is installed with the surface having a Curie temperature of 100 ° C or higher facing down, the water in the pan will boil and the temperature will rise to the set temperature. It is possible to safely cook according to the above.

According to a sixth aspect of the present invention, a space layer is provided between the heating plate for the induction heating cooker and the bottom surface of the pan. With such a configuration, heat can be efficiently transmitted to the cooked material through the moisture or the like that has entered the space layer. Further, when the amount of water in contact with the heating surface side of the heating plate, that is, the magnetic metal side, is small, a bumping phenomenon may occur because the temperature of the water rapidly rises. Since a certain amount of water is present in this space layer, the bumping phenomenon described above is less likely to occur.

According to a seventh aspect of the present invention, a heating plate for an induction heating cooker is provided with a hole for passing bubbles such as steam generated on the lower surface of the plate.
With such a configuration, bubbles such as water vapor generated on the back surface of the heating plate are efficiently removed, and thus bumping or the like is less likely to occur and stable cooking can be performed. Also,
It is also possible to control the convection state of the cooked food depending on the position of the holes. For example, when a hole is formed in a concentric shape corresponding to the center of the heating coil, the bubbles rise most and the convection that stirs the whole is generated, so that cooking can be performed more efficiently.

According to the eighth aspect of the present invention, as a means for integrating the respective metals constituting the heating plate for the induction heating cooker, only a part of the facing surfaces of the magnetic metal and the non-magnetic metal are combined. It is a thing. Since the metals constituting the heating plate have different coefficients of thermal expansion, when the entire surfaces are completely bonded, a warp due to a difference in expansion occurs during heating. However, with the configuration according to the present invention, since the warp due to the difference in expansion occurs only in the joint portion of the respective metals, the warp of the entire heating plate is reduced and stable cooking can be performed.

The invention according to claim 9 of the present invention is a means for integrating the respective metals constituting the heating plate for induction heating cooking, without connecting the entire surfaces in contact with each other,
It is fixed by sandwiching it with a jig so that it does not move in the vertical direction. With this configuration,
Even if each metal having a different coefficient of thermal expansion is heated, the warping of the entire heating plate due to the difference in expansion does not occur, so that cooking can be performed more stably.

According to a tenth aspect of the present invention, the heating plate for the induction heating cooker is integrally fixed to the bottom of the pan by a detachable structure. With such a structure, the heating plate placed on the bottom of the pan does not move, the input value is stable, and stirring of the cooked food or the like can be prevented.

According to an eleventh aspect of the present invention, a handle which is thinner than the thickness of the entire plate is attached to the end of the heating plate for the induction heating cooker. With such a configuration, it is possible to use the main heating plate alone as a pottery cooker, or place a pan or the like that is not heated by induction heating on top to indirectly heat the cooked food. Further, even when used upside down, the handle does not hit the handle regardless of the shape of the cooker body, and the cooker can be used without trouble.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a heating plate for an induction heating cooker (hereinafter referred to as "IH heating plate") showing Embodiment 1 of the present invention. No. 1 is a non-metal pot, this time using a clay pot. A heating plate 2 for IH is installed at the center of the bottom surface of the clay pot 1. This IH heating plate has a magnetic metal (hereinafter referred to as "temperature-sensitive metal") 2a having a predetermined Curie temperature and an aluminum alloy 2b which is a non-magnetic metal integrated. These clay pots and IH
The heating plate for use is arranged at a position facing the heating coil 4 via the top plate 3 of the induction heating cooker (hereinafter referred to as “IH cooker”). Here, the temperature-sensitive metal 2a is 38Ni-Fe whose Curie temperature is 260 ° C.
An alloy was used.

Oden was cooked in a clay pot in such a state. Even in a clay pot that could not be heated by an IH cooker in the past, by using such a structure, it was possible to satisfactorily heat and cook.

Next, the juice in the clay pot was removed and only the ingredients for the cooked food were removed, and the mixture was heated again in the IH cooker.
The temperature of the heating plate is the Curie temperature of the temperature-sensitive metal. 2
The temperature did not rise above 60 ° C, and the food did not ignite.

Here, the temperature-sensitive metal 2a and aluminum 2b, which are the constituent elements of the IH heating plate 2, were integrated by forming a clad. The method of integrating the two is not limited to this, and there is no limitation as long as the magnetic flux passes between the two metals, such as brazing, pressure bonding, explosive welding, and caulking. Although aluminum is used as the non-magnetic metal here, the material is not limited to this, and copper or the like may be used. In particular, when a good thermal conductor is used as the non-magnetic metal, the uniform heating property of the entire surface of the heating plate is improved, and it is possible to suppress sticking and to cook well. Second Embodiment FIG. 2 is a sectional view of the main constitution of an IH heating plate showing a second embodiment of the present invention. 1 is Example 1
In the same pot as above, the IH plate 2 is installed at the center of the bottom surface. In this IH heating plate, the temperature-sensitive metal 2a, aluminum alloy 2b, and stainless steel 2c as the second magnetic metal, which are the same as those in the first embodiment, are integrated by the clad method. As the stainless steel 2c, SUS430 having a thermal expansion coefficient relatively close to that of the Fe-Ni alloy was used.

Oden was cooked in the same manner as in Example 1 using the clay pot in such a state. In Example 1, a warp in which the central portion of the heating plate for IH swells during heating,
With the configuration of this example, warpage during heating was suppressed, and good cooking could be achieved.

Here, stainless steel was used as the second magnetic metal, but of course the invention is not limited to this.
The use of iron having a thermal expansion coefficient close to that of the Fe-Ni alloy, such as iron, can further reduce the level of warpage during heating.

(Embodiment 3) FIG. 3 is a sectional view of the main constitution of a heating plate for IH showing Embodiment 3 of the present invention. The structure is basically the same as that of the first and second embodiments, but the temperature-sensitive metals 2a and 2d and the aluminum 2b are used as the metal forming the IH heating plate.

Here, the temperature-sensitive metals 2a and 2d are used in the first and second embodiments.
The Curie temperature of 260 ° C. was used as in the above. The oden was cooked in such a state, but it could be cooked satisfactorily as in Example 1, and no problems occurred during the empty heating. Further, when the heating plate for IH having such a structure is used, the self-temperature control function works in either direction, so that it is not necessary to specify the installation direction of the heating plate for IH, which is safer than that of the second embodiment. Can be used for

Further, since both sides of aluminum are sandwiched by the same temperature-sensitive metal, the same thickness of the temperature-sensitive metal causes almost no warpage during heating and it can be used favorably.

Also in FIG. 3, heating plates for IH in which the Curie temperatures of the two temperature-sensitive metals are set differently were prepared and various cooking was performed. For example, when the Curie temperature of the temperature-sensitive metal 2a is 95 ° C. and the Curie temperature of the same 2d is 135 ° C., for cooking that needs to be boiled, the temperature-sensitive metal 2d is on the lower side and the heating plate for IH is used. It was possible to cook with sufficient boiling and without charring by installing. On the other hand, when cooking for a long time without boiling, for example, when boiling black beans, by installing the temperature-sensitive metal 2a on the lower side, it is possible to heat for a long time without boiling regardless of the set thermal power, I was able to cook it very deliciously.
Such a temperature setting can provide a highly safe heating method, as it can keep warm for a long time without worrying about empty heating etc. when keeping cooked dishes. You can

As described above, by using the temperature-sensitive metal having two Curie temperatures, it is possible to safely cook at a plurality of temperature settings with one heating plate for IH. Curie temperature is set to 100 for cooking by boiling one
Approximately 150 ℃, the other 200 for cooking pottery
If set to about 300 ° C, one heating plate for IH will provide a comfortable and safe heating method without sticking when cooking with stew, and without worrying about burning or burning when baking. can do.

These temperature settings are not limited to the above example,
The Curie temperature can be arbitrarily set according to the application by adjusting the ratio of Fe-Ni of the temperature-sensitive metal or by adding the third component.

(Embodiment 4) FIG. 4 is a sectional view of an example of the shape of a heating plate for IH showing Embodiment 4 of the present invention. Figure 4
Oden was cooked using the heating plate for IH processed in the shape of (a), but it was possible to cook efficiently without the bumping phenomenon.

This shape is not limited to that shown in FIG.
For example, by processing as shown in FIG. 4B, the processing may be simplified, or the processing may be performed so that a space layer is formed only on the heating surface side to be used.

Further, by bending the end surface of the IH heating plate as described above, there is an effect that the warp during heating can be suppressed.

(Embodiment 5) FIG. 5 is a plan view of an example of the shape of a heating plate for IH showing Embodiment 5 of the present invention. I cooked oden using the heating plate for IH processed into such a shape, but neither cooked suddenly when heated, and the whole body was uniformly heated by the convection of bubbles at the time of boiling and cooked well. I was able to. In particular, as shown in FIG.
By making a hole in accordance with the central part (broken line) of the heating coil of the H cooker, stronger convection was generated during boiling, and cooking could be further improved.

(Sixth Embodiment) FIG. 6 is a sectional view showing an example of an IH heating plate according to a sixth embodiment of the present invention. Figure 6
In the example of (a), the temperature-sensitive metals 2a and 2d having different Curie temperatures and the aluminum 2b are joined by the brazing material 5. The area to which the brazing material was applied was 10% of the total area, and the entire surface was heated and pressure-bonded by a high-frequency heating and pressure welding device set to a temperature at which the brazing material was melted, so that only the portion to which the brazing material was applied was bonded. The heating plate for IH thus prepared was placed in a clay pot and heated, but the warpage during heating could be reduced as compared with the case where the entire surfaces were joined.

In FIG. 6 (a), each metal 2a, 2
Although it is exaggeratedly described so that there is a gap between b and 2d, it is actually a gap that cannot be visually confirmed. Even if a gap that can be visually confirmed is formed, the gap is 1 m.
If it is m or less, there is no problem in transmitting the magnetic flux between the metals,
The predetermined self-temperature control function is activated.

Although the case of brazing has been described as a method of joining the metals forming the IH heating plate, the method is not limited to this, of course, and as shown in FIGS. 6 (b) and 6 (c), for example, as shown in FIGS. Any method can be used as long as each metal can be partially bonded, such as a structure in which one or more holes are formed in the temperature-sensitive metal and the whole is pressed to caulk both temperature-sensitive metals and aluminum.

Although the bonding area of each metal is 10% of the total area, the present invention is not limited to this, and the coefficient of thermal expansion of each metal, the plate thickness and the rigidity, and the restrictions on working. It can be set arbitrarily considering the conditions.

Further, as the joining portion of the respective metals, the example in which the centers of the entire surfaces are joined has been described, but of course the invention is not limited to this, and the effect can be obtained by partially joining at any place. .

(Embodiment 7) FIG. 7 is a sectional view and a plan view of an IH heating plate showing Embodiment 7 of the present invention. The temperature-sensitive metals 2a and 2d having different Curie temperatures and the aluminum 2b are integrated by a jig 7 made of stainless steel. Here, the respective metals are not individually joined by surface, but are joined by caulking the jig 7 in the vertical direction. However, the gap between the metals is equal to or smaller than the gap through which the magnetic flux generated by the heating coil passes through each other. Further, the end of each metal and the jig 7 are provided with a space 8 so as not to be in direct contact with each other, and here, the difference in expansion of each metal is absorbed.

The heating plate for IH having such a structure was placed in a clay pot for heating, but there was almost no warpage during heating as compared with the structure in which the respective metals were combined in whole or in part, which was good. Could be heated to.

The size of the gap between the metals was also confirmed. If the gap was 1 mm or less, the self-temperature control function of the temperature-sensitive metal worked.

(Embodiment 8) FIG. 8 is a sectional view and a perspective view showing an embodiment 8 of the present invention. Reference numeral 9 is a non-metal pan for an induction heating cooker, which is made of glass. For fixing the heating plate 2 for IH to the bottom of this pan,
The hook 10 is formed. Further, there is a notch at the end of the IH heating plate 2, and as shown in FIG. 8B, the notch is aligned with the hook 10, and the IH heating plate is rotated in the direction of the arrow. It is configured to be fixed to the bottom of the pan.

Oden was cooked in the pot having such a structure, but the IH heating plate did not move during cooking, and it was possible to cook well. In addition, even when the food was baked in the air, the unsafe condition such as ignition of the cooked food did not occur as in the previous examples.

In the present embodiment, the shapes of the notches of the hook 10 and the heating plate are as shown in the drawings, but of course the present invention is not limited to this, and can be arbitrarily set as long as the heating plate can be fixed.

(Embodiment 9) FIG. 9 is a sectional view of an IH heating plate showing Embodiment 9 of the present invention. Here, the temperature-sensitive metals 2a and 2d and the aluminum 2b having different Curie temperatures are integrated by a clad method. The Curie temperature of the temperature-sensitive metal 2a was 160 ° C, and the Curie temperature of the temperature-sensitive metal 2d was 260 ° C. Further, a step A having a constant height is provided at the end of the plate so that the cooked food on the heating surface does not spill. In addition, a handle 11 with a height B that fits in the step at the end of the plate (thickness of the entire plate) is attached to improve the usability by not touching the handle when moving the plate or flipping the plate upside down. There is.

Baked food was cooked with such a heating plate for IH. When the temperature-sensitive metal 2a having a low Curie temperature was placed below, the pancake, crepe and the like could be cooked well without burning. Further, when the temperature-sensitive metal 2d having a high Curie temperature is placed below, it was possible to satisfactorily cook even a menu that requires cooking at a high temperature, such as steak and fried vegetables.
By using the heating plate having such a configuration,
It was possible to safely cook two kinds of temperature zones with one heating plate without fail. The Curie temperature of the temperature-sensitive metal used here is 160 ° C. and 260 ° C., but of course, it is not limited to this and can be arbitrarily set as required. In addition, the thickness of the handle attached to the end was set so that it would fit within the thickness of the main body of the heating plate, and it was devised so that it could be used without touching the handle with either side facing up. You may adjust the relationship.

In each of the embodiments, the operating temperature in the self-temperature control function is the same as the Curie temperature of the temperature-sensitive metal, but this relationship also changes depending on the characteristics of the main body of the IH cooker. In some cases, the Curie temperature may be arbitrarily set according to the characteristics of the target IH cooker.

Further, in each of the embodiments, an example in which the respective metals are used in a state of being integrated is explained, but the heating plate may be coated with fluorine coating or the like. By applying a coating, the usability is greatly improved by reducing the stickiness of cooked foods. Further, since the heating plate of the present invention does not increase in temperature above a predetermined temperature, the durability of the coating is also significantly improved.

Further, a coating having low heat resistance, for example, a monomolecular coating using a silane coupling agent, etc., can be adopted due to the restriction of temperature rise during abnormal heating. In addition, heating for the effect of coating film, which is generally performed,
It also has the effect of aging the heating plate body, and can also suppress the occurrence of warpage during use.

[0056]

As described above, according to the invention described in claims 1 to 11, in a non-metal pot which could not be heated by an induction heating cooker, induction heating can be performed and self-heating is possible. By having a temperature control function, it is possible to provide a heating plate for an induction heating cooker and a non-metallic pan for an induction heating cooker that prevent an unsafe state such as overburning or ignition of cooked food.

[Brief description of drawings]

FIG. 1 is a sectional view of a heating plate for an induction heating cooker showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a heating plate for an induction heating cooker showing a second embodiment of the present invention.

FIG. 3 is a sectional view of a heating plate for an induction heating cooker showing a third embodiment of the present invention.

FIG. 4 is a cross-sectional view of a heating plate for an induction heating cooker showing a fourth embodiment of the present invention.

FIG. 5 is a plan view of a heating plate for an induction heating cooker showing a fifth embodiment of the present invention.

FIG. 6 is a sectional view of a heating plate for an induction heating cooker showing a sixth embodiment of the present invention.

FIG. 7 is a sectional view and a plan view of a heating plate for an induction heating cooker showing a seventh embodiment of the present invention.

FIG. 8 is a sectional view and a perspective view of a non-metallic pan for an induction heating cooker showing an eighth embodiment of the present invention.

FIG. 9 is a cross-sectional view of a heating plate for an induction heating cooker showing a ninth embodiment of the present invention.

FIG. 10 is a cross-sectional view showing the main configuration of the induction heating cooker body.

[Explanation of symbols]

1 Non-metal pot (earthenware pot) 2 Heating plate for induction heating cooker 2a, d Magnetic metal having a predetermined Curie temperature 2b Non-magnetic metal (aluminum alloy) 2c Second magnetic metal (stainless steel) 7 jig 9 Non-metal pot (glass pot) 10 hooks 11 handle

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Shimizu             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Haruo Ishikawa             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 4B055 AA09 BA02 BA22 FA02 FB02                       FB04 FB05 FC06

Claims (11)

[Claims] 1. A heating plate for an induction heating cooker, which has a self-temperature control function in which a magnetic metal and a non-magnetic metal having a predetermined Curie temperature are integrated. 2. A magnetic metal having a predetermined Curie temperature, a non-magnetic metal, and a second magnetic metal having a Curie temperature higher than the predetermined Curie temperature,
A heating plate for an induction heating cooker, wherein the nonmagnetic metal is sandwiched between the magnetic metal and the second magnetic metal to have a self-temperature control function. 3. A magnetic metal 2 having a predetermined Curie temperature.
A heating plate for an induction cooker, comprising a sheet and a non-magnetic metal, and integrating the non-magnetic metal between the magnetic metals so as to have a self-temperature control function. 4. A magnetic metal and a non-magnetic metal having two different predetermined Curie temperatures are provided, and the non-magnetic metal is sandwiched between the magnetic metals to be integrated with each other, and the self of different temperatures on both the front and the back sides. A heating plate for an induction cooking device having a temperature control function. 5. The heating plate for an induction cooker according to claim 4, wherein one of the two kinds of magnetic metals has a Curie temperature of 100 ° C. or lower and the other Curie temperature of 100 ° C. or higher. 6. The heating plate for an induction heating cooker according to claim 1, wherein a space layer is provided between the pan and the bottom surface of the pan. 7. The heating plate for an induction heating cooker according to claim 1, wherein a hole is provided for passing bubbles such as water vapor generated on the lower surface of the plate. 8. The heating plate for induction heating cooking according to claim 1, wherein only a part of the surfaces of the magnetic metal and the non-magnetic metal facing and contacting each other is bonded. 9. The heating plate for an induction heating cooker according to claim 1, wherein the magnetic metal and the non-magnetic metal are sandwiched and fixed by a jig. 10. A pan having a self-temperature control function integrated with the heating plate for an induction heating cooker according to any one of claims 1 to 9 so as to be detachably fixed to the bottom surface of the pan. 11. The heating plate for an induction heating cooker according to claim 1, wherein a handle that is thinner than the thickness of the entire plate is attached to an end of the heating plate for the induction heating cooker.