JP2000182762A - Electromagnetic cooking table, positioning method of cooking utensil, and top plate for electromagnetic cooking table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat and cook by directly placing a cooking container on a top plate formed in a unit surface with a heat resistant material. SOLUTION: This top plate 2 is constituted with a thin plate-like surface material 5 covering the top surface made mainly of 3-5 mm thick aluminum hydroxide plate reinforced with glass fibers and a plate-shaped backup material 6 joined to the back surface of the surface material 5. A part corresponding to the position on which a cooking container 15 is placed of the backup material 6 is cut out, and an electromagnetic induction heating device 4 is installed there so as to face the back surface of the surface material 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an electromagnetic cooking table. More specifically, the present invention relates to an electromagnetic cooking table provided with an electromagnetic induction heating device below a top plate and for cooking by heating a cooking container placed on the top plate.

[0002]

2. Description of the Related Art For example, an electromagnetic cooking table which can be heated by directly placing a pot or the like on a table, such as that described in Japanese Patent Application Laid-Open No. Hei.

In the electromagnetic cooking table described in the above publication, a cooking portion on which a pan or the like is placed is formed of a plate member having excellent permeability and heat resistance, and an electromagnetic induction heating device is arranged on the back surface. In addition, the surrounding table portion is formed of a plate-like member which is hardened at the time of molding, and the joint region between the cooking portion and the table portion is formed substantially flat.

[0004] By adopting the above configuration, the surface of the top plate can be formed flush to improve the appearance of the table, and even if there is a spill from a pan or the like, the table enters the electromagnetic induction heating device. Nothing. Further, since the pot or the like can be placed directly on the surface of the top plate, the height of the pot or the like does not increase from the surrounding dining table, and a comfortable meal can be performed.

[0005]

In the electromagnetic cooking table described in the above publication, the cooking part and the table part on the surface of the top plate are formed of different materials in order to ensure the heat resistance of the cooking part. .

[0006] For this reason, a structure for supporting a heat-resistant plate material to be fitted into the cooking portion is required, which not only complicates the manufacturing process but also increases the manufacturing cost.

Further, different surface materials are joined in a plane to form a flat surface, but the surface material constituting the cooking portion repeats expansion and contraction each time it is used. A minute gap is easily generated between them.

In order to solve the above-mentioned problem, there is provided a table in which the entire table is formed of a heat-resistant inorganic material, such as that described in Japanese Patent Application Laid-Open No. 7-245180. However, if the entire top plate is formed of an inorganic material, the weight of the entire table becomes very large, and there is a problem in handling.

In addition, in the cooking portion, unless the distance between the coil of the electromagnetic induction heating device and the lower surface of the cooking vessel such as a pan is reduced, the efficiency of induction heating is reduced. In addition, a cooking vessel is placed directly above the electromagnetic induction heating device on the top plate and is exposed to high temperatures, so that high heat resistance and strength are required. For this reason, when an integral top plate is formed from a conventional material, cracks, distortions, and the like are likely to occur in the top plate.

Furthermore, when the top plate is integrally molded from a heat-resistant material so that the cooking container can be directly placed and heated, there is no boundary between the table portion and the cooking portion. It becomes difficult to position and place the container directly above the electromagnetic induction heating device. For this reason, the cooking container may be shifted from the heating position to lower the heating efficiency, or heat from the cooking container may act on a portion other than the heating region to damage the top plate.

[0011] Furthermore, in a case where cooking can be performed by directly mounting a cooking container using a heat-resistant top plate, food spilling from the cooking container is heated on the top plate. It is conceivable that the top plate is scorched. For this reason,
Even when the cooking container can be placed directly on the top plate, a problem may occur.

The present invention has been devised in order to solve the above-mentioned various problems. The surface of the top plate is formed of the same heat-resistant material so as to be integral with the top plate, and the cooking container is placed on the top plate. Can be placed directly on the table, the weight of the table does not increase, the expansion and contraction due to the heating of the cooking container are less, and the cooking container can be easily moved to the heating position of the top plate. It is an object to provide an electromagnetic cooking table that can be positioned.

[0013]

Means for Solving the Problems To solve the above problems, the present invention takes the following technical means.

The present invention comprises a top plate, a leg for holding the top plate at a predetermined height, and an electromagnetic induction heating device attached to a lower surface of the top plate, and is mounted at a predetermined position on the top plate. An electromagnetic cooking table configured to be able to heat the prepared cooking container, wherein the top plate has a thickness of 3 reinforced with glass fiber.
a thin plate-shaped surface material mainly composed of aluminum hydroxide having a thickness of 5 mm to 5 mm and integrally covering the upper surface, and a plate-shaped backup material integrally joined to the back surface of the surface material; A portion of the material corresponding to the position where the cooking container is placed is cut out, and the electromagnetic induction heating device is arranged so as to face the back surface of the surface material.

The shape of the entire top plate, the height of the legs, the output of the electromagnetic induction heating device, and the like are not particularly limited. In addition, a conventionally used electromagnetic induction heating device can be used.

The surface material is formed by bonding and hardening aluminum hydroxide particles with a thermosetting heat-resistant resin binder, and has heat resistance and water resistance of about 200 ° C. Also, since it is reinforced with glass fiber, it has extremely high mechanical strength and durability.

Moreover, since it is formed mainly of glass fiber and aluminum hydroxide, it has electromagnetic wave permeability. Therefore, a heating electromagnetic wave can be applied to the cooking container placed on the top plate from the electromagnetic induction heating device installed below the surface material.

In the present invention, a thickness of 3 mm to 5 mm
And a backup material is joined to this surface material and reinforced to form a top plate. By reducing the thickness of the surface material, it is possible to reduce the weight while giving heat resistance to the top plate surface. Further, by setting the thickness to be thin, the range in which the surface material can be deformed is increased, and the possibility of occurrence of cracks or the like when joining with the backup material is reduced.

Although the temperature of the surface material rises due to heat acting from the cooking vessel, aluminum hydroxide has a small heat capacity and a relatively high thermal conductivity, so that the temperature difference between the front surface and the back surface is small. For this reason, the value of the thermal stress acting on the joining boundary with the backup material can be reduced.

When the thickness of the surface material is 3 mm or less, it is difficult to secure the mechanical strength for holding the cooking container in the cutout portion of the backup material. On the other hand, when it is set to 5 mm or more, the temperature difference between the front surface and the back surface becomes large, so that thermal stress is easily generated, and cracks and the like are easily generated on the front surface. Also, it becomes difficult to reduce the weight of the top plate.

Further, since the surface material is reinforced with glass fiber, the mechanical strength is large even if the thickness is set to the above-mentioned thickness, and the portion for supporting the cooking vessel immediately above the electromagnetic induction heating device is only the surface material. Can be configured. Thus, the distance between the heating coil of the electromagnetic induction heating device and the bottom of the cooking vessel can be set to be much smaller than in the past, and the efficiency of the heating electromagnetic wave can be greatly increased.

By employing the above-mentioned surface material, the entire upper surface of the top plate can be formed flush with one sheet material. As a result, there is no boundary between the cooking portion on which the cooking container is placed and the table portion as in the related art, and an electromagnetic cooking table with a good appearance can be configured.

On the other hand, the sheet-like surface material mainly composed of aluminum hydroxide has heat resistance of more than 200 ° C. itself, but as it is, its design as an electromagnetic cooking table is low. For this reason, in order to improve the design property of the surface of the top plate, a heat-resistant protective coating layer such as melamine resin coating or Teflon (registered trademark) resin coating may be formed on the surface material.

Various materials can be used as the backup material. For example, wood plywood such as veneer, MD
It is preferable to use F material (medium fiber board). By adopting the above-mentioned wood-based plywood as a backup material, not only processing becomes easy but also the weight of the top plate can be reduced. More preferably, an MDF material (medium fiber board) having a small amount of deformation due to heat is preferably used. Since the electromagnetic cooking table according to the present invention is based on the premise that the cooking vessel is directly placed on the top plate, it is conceivable that a high temperature acts not only on the surface material but also on the backup material.

The invention described in claim 2 of the present application is to solve the problem caused by placing a cooking vessel on a top plate and performing cooking. That is, in the present invention, the heat generated in the cooking container is directly transmitted to the surface material on which the cooking container is placed, causing large thermal deformation of the surface material.

In the present invention, the portion of the top plate on which the cooking container is placed is constituted only by the surface material, and the heat does not act directly on the backup material. However, thermal deformation of the surface material spreads to the peripheral portion of the cutout portion of the backup material in which the electromagnetic induction heating device is arranged. For this reason, if the entire joining surface of the surface material and the backup material is firmly joined, problems such as distortion of the top plate and separation of the surface material and the backup material are likely to occur.

In the present invention, the surface material and the backup material at least in the portion surrounding the cutout portion are laminated so as to be relatively displaceable in the direction of the joining surface.
The above disadvantages are avoided.

As a method of joining such that it can be relatively displaced in the joining surface direction, for example, as in the invention described in claim 3,
It is conceivable that the joint is made so as to be relatively displaceable in the joint surface direction with a heat-resistant rubber-based adhesive, and that a soft adhesive layer absorbs distortion due to heat. As the heat-resistant rubber-based adhesive, for example, a silicone rubber-based adhesive can be used.

The top plate and the vicinity of the outer edge of the surface material may be integrally bonded with a general adhesive, while the portion surrounding the cutout may be laminated without bonding.

By bonding the surface material and the backup material as described above, even when the thermal deformation amount of the surface material and the backup material is different, large stress does not act, and the top plate is distorted. The surface material and the backup material do not peel off.

According to the invention described in claim 4 of the present application, a positioning mark indicating a position on which a cooking vessel is placed is provided on the upper surface of the surface material corresponding to the induction heating device.

Since the top plate according to the present invention has its upper surface covered with a single surface material, it is difficult to accurately place the cooking vessel at the heating position as it is. For this reason,
A positioning mark indicating the mounting position is provided on the surface material.

The means for providing the positioning marks is not limited. For example, it is conceivable to apply a heat-resistant image to the surface of the surface material.

When the mark for positioning the cooking container is directly displayed on the top plate, the design of the cooking table may be degraded. In order to alleviate the above problem, a mark can be formed by performing a matting process on the surface of the surface material as in the invention described in claim 5.

When a mark is formed by matting,
The placement position of the cooking container can be displayed without changing the design or the like on the surface of the top plate. For this reason, there is no restriction on the design of the top plate surface, and a top plate having an integral pattern or the like can be configured.

According to a sixth aspect of the present invention, a plurality of temperature detecting sensors are provided at a plurality of positions on the surface material at a predetermined distance from the center of the heating area by the electromagnetic induction heating device, and the temperature difference is detected based on a difference between outputs from the temperature sensors. The position of the heating container with respect to the induction heating device is detected, displayed, or warned.

That is, the heat generated from the cooking container placed on the top plate is sensed to indicate whether or not the cooking container is placed at the correct position.

When the cooking vessel is placed directly above the electromagnetic induction heating device, the temperatures of the plurality of temperature sensors become substantially the same, but if the placement positions are shifted, the temperature sensors detect the temperature. A shift also occurs in the temperature. The shift is detected and the cooking container is moved to the correct position.

As means for displaying the above-mentioned deviation, in addition to displaying the detected temperature of each temperature sensor as it is, a liquid crystal screen or the like for displaying the direction in which the cooking container is moved may be provided at the edge of the table. Further, the moving direction may be instructed by voice.

Since the surface material according to the present invention has a relatively high thermal conductivity as well as a small thickness, it is possible to detect the heat transmitted from the cooking vessel without time lag.

By utilizing the characteristics of the surface material, the temperature of the top plate and / or the cooking vessel is detected based on the output of the temperature sensor and the top plate is detected. And / or when the temperature of the cooking container rises above a predetermined temperature, the output of the electromagnetic induction heating device may be reduced or the operation may be stopped.

Also in the conventional electromagnetic cooking table, a safety device is provided for installing a temperature detection sensor on the back surface of the top plate and stopping the operation of the electromagnetic induction heating device when the temperature of the top plate becomes abnormally high. I was

However, since the conventional top plate uses a high heat insulating top plate material, it takes time for the heat of the cooking vessel to be transmitted to the temperature sensor. For this reason, it is necessary to set the operating temperature of the safety device low, and it has been difficult to control the output of the electromagnetic induction heating device based on the output of the sensor.

In the present invention, since the heat of the cooking vessel is transmitted to the surface material in real time, the output of the electromagnetic induction heating device can be controlled based on the information of the temperature sensor. Further, since the temperature can be detected by a plurality of temperature sensors, the detection accuracy is high. This makes it possible to stabilize the temperature of the cooking container, and to provide an electromagnetic cooking table that has never existed before.

If the cooking container is displaced from the predetermined heating position, the heat of the cooking container is transmitted to a portion of the top plate other than the heating area, and the top plate may be damaged. However, the conventional temperature sensor can measure only the temperature of the heating area, and is likely to damage the top plate. According to the present invention, a plurality of temperature sensors can be provided to monitor the temperature of the entire heating area, so that the safety is high.

According to the invention described in claim 8 of the present application, the top plate having at least the entire surface integrally formed of one member and flush with each other, a leg for holding the top plate at a predetermined height, An electromagnetic induction heating device attached to the back side of the plate and heating an cooking container on the top plate,
The cooking vessel is placed on the top plate via the bottom plate placed on the top plate, and the bottom plate and the bottom plate are positioned at a predetermined heating position on the top plate. This is provided with a positioning means that can be used.

The present invention is configured so that the cooking container can be positioned at a predetermined heating position via a floor plate.

The configuration of the floor plate is not particularly limited, and it may be formed of a material that can pass electromagnetic waves for heating and has heat resistance enough to withstand the temperature of the cooking vessel. Further, it is desirable to form the electromagnetic wave for heating generated from the electromagnetic induction heating device as thin as possible so as not to lower the efficiency. For example, a thin plate mainly composed of aluminum hydroxide used in the invention described in claim 1 can be used.

By employing the floor plate, the cooking container is not placed directly on the top plate, so that damage to the top plate can be prevented. In addition, food or the like spilled out of the cooking container is not heated to a high temperature on the top plate, so that dirt on the top plate can be prevented. Therefore, the life of the top plate can be greatly extended. On the other hand, it is conceivable that the soleplate becomes dirty or damaged. However, since the soleplate can be manufactured at low cost, it can be easily replaced.

The thickness of the bottom plate is not particularly limited. However, considering the general reach of the heating electromagnetic wave, the distance from the coil of the electromagnetic induction heating device to the bottom of the cooking vessel is 10 mm. It is desirable to set as follows.

The positioning means of the floor plate is not particularly limited. For example, a positioning mark as described in claim 4 or 5 can be provided on the top plate.

On the other hand, by employing the floor plate, the positioning can be performed without providing any indication such as a positioning mark on the surface of the top plate.

In other words, the positioning means for positioning the top plate can be configured without using any positioning mark on the surface of the top plate by using, for example, magnetic force, electromagnetic waves, ultrasonic waves, or the like. . With such a configuration, there is no thing on the surface of the top plate that can be recognized as an electromagnetic cooking tail, and the beauty of the table is greatly improved. Further, there is no restriction on the design of the top plate surface, and a top plate provided with a desired pattern or the like can be configured.

Moreover, since the cooking container can be positioned via the floor plate, it is highly versatile. By preparing flooring plates of various shapes and sizes, it is possible to cope with various sizes or various types of cooking containers. .

According to a ninth aspect of the present invention, there is provided a sheet-like surface material comprising a top plate made mainly of glass hydroxide reinforced aluminum hydroxide having a thickness of 3 mm to 5 mm and integrally covering the upper surface; And a plate-shaped backup material integrally joined to the back surface of the material.

By employing the above configuration, the distance from the heating coil of the electromagnetic induction heating device to the lower surface of the cooking vessel is reduced by one.
It is easy to reduce the thickness to 0 mm or less.

According to a tenth aspect of the present invention, a positioning display indicating a mounting position of the cooking container is provided on a surface of the floor plate.

In order to prevent the surface of the top plate from being stained, a floor plate larger than the cooking vessel may be employed. In such a case, it is necessary to display the positioning of the cooking container with respect to the floor plate.

When cooking by heating the cooking container on the top plate, the contents of the container may be spilled out, or the soup or the like may fall down on the top plate when removing the contents. When the top plate is used in such a state, even if the top plate is made of a heat-resistant material, the surface of the top plate is liable to be scratched or damaged.

The present invention solves the above-mentioned problem, and the present invention is constructed so that the above-mentioned sole plate functions not only as a positioning means for the cooking vessel but also as a means for protecting the surface of the top plate.

The configuration of the positioning display is not particularly limited, and for example, a method similar to the method described in claims 4 and 5 can be adopted.

According to an eleventh aspect of the present invention, there is provided an object according to the present invention, wherein the positioning means is provided on a back side of the top plate and at a predetermined position on one of the floor plates, A detection device that is provided on the other side and detects the object to be detected approached when the floor plate is placed at a predetermined position; and displays an output of the detection device provided on the electromagnetic cooking table or the floor plate. And a display means that can be used.

By moving the floor plate so as to slide on the top plate, when the floor plate is located at a predetermined position, the object to be detected is detected by the detection device and displayed by the display means. The positioning of the sole plate is performed.

Various non-contact proximity sensors can be used as an operation method of the positioning means. For example, claim 1
As in the invention described in Item 2, a metal can be used for the object to be detected, and a metal detection sensor can be used for the detection device. Further, as in the invention described in claim 13, a magnet can be used for the object to be detected, and a magnetic detection sensor can be used for the detection device. As the magnet, not only a permanent magnet but also an electromagnet can be employed. The magnet and the metal may be provided on either the floor plate side or the top plate side.

By employing the non-contact proximity sensor as described above, there are no positioning marks or the like on the surface of the top plate, and the appearance is similar to that of a general table. Therefore, the design of the top plate surface is not restricted. Further, since it can be used as a general table, the range of use can be expanded.

The display means is not limited either, and may be configured to display at a position distant from the detection device, or may be provided integrally with the detection device provided on the floor plate. In addition, utilizing the magnetic force of the above magnets,
A mechanical display means can be formed, or an electric display can be made by using a lamp or the like.

With the above-mentioned display means, the bottom plate is positioned at a predetermined position, and the cooking container is disposed immediately above the induction heating device, so that efficient cooking can be performed. In addition, the heating electromagnetic wave does not act on the cooking container while being deviated, and the heat generated from the cooking container is not transmitted to the careless portion of the table, so that the safety is improved.

According to a fourteenth aspect of the present invention, the object to be detected and the detecting device are provided at two separate positions on the floor plate and the top plate, respectively.

It is necessary to position two positions of the floor plate in order to arrange the floor plate at a predetermined position on the top plate, and by positioning two separated positions, the position of the floor plate with respect to the top plate can be determined.

The invention according to claim 15 of the present application is characterized in that a thin plate-shaped surface material mainly composed of aluminum hydroxide having a thickness of 3 mm to 5 mm and reinforced with glass fibers and integrally covering the top surface of the top plate, And a plate-shaped backup material integrally joined to the back surface, wherein a portion of the backup material corresponding to a position where the cooking container is placed is cut out, and a concave portion for mounting an electromagnetic induction heating device is provided. It relates to a table top.

According to a sixteenth aspect of the present invention, in accordance with the fifteenth aspect, at least the surface material and the backup material in a portion surrounding the notch portion are laminated so as to be relatively displaceable in a joining surface direction. It was done.

According to a seventeenth aspect of the present invention, a top plate is provided with a bottom plate on which a cooking vessel can be placed and cooked by heating, and positioning means for positioning the bottom plate at a predetermined heating position. It is.

The invention described in claim 18 of the present application is a method for positioning a cooking vessel in an electromagnetic cooking table provided with a top plate whose surface is integrally formed by one member, wherein the bottom plate is placed at a predetermined position on the top plate. The cooking container is positioned with respect to the electromagnetic induction heating device by positioning and placing the cooking container on the floor plate.

[0074]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.

As shown in FIG. 1, an electromagnetic cooking table 1 according to the present embodiment has a top plate 2, four legs 3 for holding the top plate 2 at a predetermined height, and And an electromagnetic induction heating device 4 installed below the center of the device.

As shown in FIG. 2, the top plate 2 is composed of a surface material 5 and a backup material 6 bonded to the back surface of the surface material.
And an edge member 7 and a sighting member 8 joined along the peripheral edge of the backup material 6.

At the center of the backup material 6, a rectangular cutout 9 is formed so that the back surface of the surface material 5 is exposed. The electromagnetic induction heating device 4 is fixed via a bracket 10 extending from the edge of the upper backup material 6 so as to face the back surface of the surface material 5 exposed at the notch 9.

In the present embodiment, the top plate 2 is constituted only by the surface material 5 in the region of the notch 9, and the cooking vessel 15 is directly placed on this portion and heated.

As the surface material 5 according to the present invention, a thin plate material mainly composed of aluminum hydroxide and having a thickness of 3 mm to 5 mm reinforced with glass fiber is employed. FIG. 4 schematically shows a cross-sectional structure of the surface material.

A reinforcing layer 13 made of glass fiber is disposed between upper and lower layers 11 and 12 obtained by solidifying aluminum hydroxide powder with a heat-resistant binder such as a phenol resin, and a melamine resin is formed on the upper surface. The heat resistant coating layer 14 is integrally formed.

The aluminum hydroxide layers 11 and 12 and the glass fiber layer 13 are capable of transmitting electromagnetic waves for heating and have high heat resistance. Moreover, since it is reinforced with glass fiber, it has high mechanical strength.

In the present embodiment, the thickness of the surface material 5 is set to 3.2 mm.
The cooking container 15 is held only by the surface material 5. Therefore, as shown in FIG. 2, the distance H from the upper surface of the electromagnetic induction heating device 4 to the upper surface of the top plate can be set to 8 mm or less.

In a conventional electromagnetic cooking table, the distance from the electromagnetic induction heating device to the top surface of the top plate is often 10 mm or more, and when cooking at a high temperature, a heating device having a large output must be used. In many cases.

In the present invention, by reducing the distance H, the heating electromagnetic wave can reliably reach the bottom of the cooking vessel 15. Further, the efficiency of the heating action of the electromagnetic wave can be improved, and a low-output electromagnetic induction heating device can be employed.

In the present embodiment, it is assumed that the cooking vessel 15 is placed directly on the top plate, so that the surface material immediately below the cooking vessel has a temperature exceeding 150 ° C. For this reason, the amount of expansion and contraction of the surface material increases. Therefore, in the conventional joining method, the surface material 5 and the backup material 6
Thermal stress is generated due to the difference in expansion coefficient between these members, and these members may be peeled off.

In this embodiment, as shown in FIG. 3, the inconvenience is avoided by joining the surface member 5 and the backup member 6 in two regions joined by different adhesives.

The area shown by A in FIG. 3, that is, the peripheral portion of the notch 9 is made of a silicone rubber-based adhesive. On the other hand, in the region indicated by B, a vinyl acetate-based woodworking adhesive conventionally used is adopted. The silicon rubber-based adhesive has not only high heat resistance but also a flexible adhesive layer.

The influence of the deformation of the surface material mainly affects the periphery of the notch 9, but the silicon rubber-based adhesive layer causes a slight relative movement of the surface material 5 and the backup material 6 in the bonding surface direction. Displacement is allowed. For this reason,
It is possible to prevent separation or the like due to distortion between the surface material 5 and the backup material 6. On the other hand, the outer edge of the top plate 2 is hardly affected by the heat from the cooking vessel 15, and can be sufficiently covered by a vinyl acetate-based adhesive conventionally used.

The width of the region to be joined with the silicone rubber adhesive is not particularly limited, but is 5 cm to 15 cm.
It is preferable to set to about. An adhesive other than the silicone rubber-based adhesive can be employed as long as a heat-resistant flexible adhesive layer can be formed.

With the surface member 5 according to the present embodiment, the entire top surface of the top plate is evenly covered, and a top plate with no seams and excellent appearance can be formed. However, the boundary between the table portion and the cooking portion cannot be recognized as it is. For this reason, it becomes difficult to place the cooking container 15 right above the electromagnetic induction heating device 4.

In order to solve the above problem, as shown in FIG. 5, a positioning mark 16 for mounting the cooking vessel 15 is provided on the surface of the surface member 5 corresponding to the electromagnetic induction heating device 4. In the present embodiment, the positioning mark 16 is formed by performing a circular matting process on the surface. In the matting process, fine irregularities may be formed on the surface, and there is no possibility that the design of the surface of the top plate is limited. By placing the cooking container 15 on the positioning mark 16, cooking can be performed without lowering the efficiency of the heating electromagnetic wave.

FIGS. 6 and 7 show another means for placing the cooking vessel 15 directly above the electromagnetic induction heating device 4. FIG.

The means shown in these figures is for detecting the displacement of the cooking vessel 15 from the temperature difference of the surface material 5. FIG.
As shown in the figure, a plurality of temperature sensors 17a, 17b, 1
7 c and 17 d are provided at the same distance from the center position S of the electromagnetic induction heating device 4. As shown in FIG. 6, these temperature sensors are embedded in the back surface of the surface member 5 and detect the temperature of the surface member 5 accurately.

As shown in FIG. 7, if the center S1 of the cooking vessel is shifted rightward in the drawing from the center position S of the electromagnetic induction heating device 4, when the cooking vessel 15 is heated, a temperature sensor indicated by reference numeral 17d is provided. While the detected temperature of
The detection temperature of the temperature sensor indicated by a decreases. Further, the detection temperatures of the temperature sensors indicated by reference numerals 17b and 17c are substantially the same.

Therefore, by moving the cooking vessel 15 in the direction in which the temperature sensor 17a having a low detected temperature is installed, the cooking vessel can be guided to the center of the electromagnetic induction heating device 4.

The surface material 5 according to the present embodiment has a small thickness and a high thermal conductivity, so that the time shift of the temperature change is small. For this reason, it is possible to easily detect the displacement of the mounting position of the cooking container from the temperature of the surface material 5.

As a method of displaying the displacement of the cooking container, for example, in addition to displaying the detected value of the temperature sensor as it is,
It is possible to employ a technique of displaying a temperature difference on a liquid crystal screen or the like and instructing a moving direction. The moving direction can be indicated by voice or the like.

Further, as described above, the surface material according to the present invention has a large thermal conductivity, so that there is little time difference in temperature change. For this reason, it is also possible to detect the temperature at the bottom of the cooking vessel 15 in real time. This allows
It is also possible to set the cooking container 15 to a temperature suitable for cooking.

Further, when the temperature of the cooking container or the top plate exceeds a predetermined temperature, the output of the electromagnetic induction heating device 4 may be reduced or the operation may be stopped. Thereby, a more attractive and safer electromagnetic cooking table can be provided.

FIG. 8 shows another embodiment of the present invention.

The embodiment shown in FIG.
Are placed on the top plate 2 via the floor plate 20.

The floor plate 20 is formed in the shape of a bale in plan view using the same thin plate material as the surface material 5 shown in FIG. A circular positioning mark 21 corresponding to the bottom shape of the cooking vessel 15 is formed at the center of the surface of the floor plate 20.
The positioning mark can be formed by using a heat-resistant paint, a heat-resistant image, or a method similar to the matting process shown in FIG.

On the other hand, positioning means 2 provided on the back side of the top plate are provided on the tops of the arcs on both sides of the floor plate 20.
Positioning means 22 for positioning the floor plate 20 at a predetermined position on the top plate 2 and positioning the area of the positioning mark 21 directly above the electromagnetic induction heating device 4 in cooperation with the electromagnetic induction heating device 4 are provided. Have been.

As shown in FIG. 9, the positioning means 22 on the floor plate side includes a casing 23 provided at the edge of the floor plate 20 and a magnetic force sensing device 24 for sensing a magnetic force in the casing 23.
And display means 25 for displaying the operation of the magnetic force sensing device 24.

The magnetic force sensing device 24 includes a casing 23
A shaft 26 rotatably held in the shaft, a substantially V-shaped arm 27 made of aluminum having a central portion joined to the shaft 26,
A lead weight 28 joined to one arm 27a of the arm 27 and an L-shaped iron piece 2 attached to the other arm 27b
9 is provided.

The lead weight 28 is set to be heavier than the iron piece 29, and when no magnetic force acts on the lead weight 28, as shown in FIG.
As shown in the figure, the arm 27a on the lead weight 28 side is in a pivoting position in which it is positioned below.

The display means 25 has a blue display surface 30 formed by coloring the surface of the arm 27 a supporting the weight 28, and a display hole 32 formed in the upper wall 31 of the casing 23. Is formed. In the display hole 32,
A transparent protective cover 33 is mounted.

As shown in FIG. 10, when the arm 27 rotates and the arm 27a comes into contact with the inner surface of the upper wall 31, the display surface 30 can be visually recognized from the outside through the display hole 32. Can be.

On the other hand, the positioning means 23 on the top plate side is formed by forming an accommodation hole 34 extending to the back surface of the surface material 5 in the backup material 6 and accommodating and holding a permanent magnet 35 in the accommodation hole 34. ing.

When the positioning means 22 on the floor plate side comes directly above the positioning means 23 on the top plate side, as shown in FIG. 10, the iron piece 29 is attracted by the magnet 35 and the substantially V-shaped arm is formed. The part 27 is rotated clockwise, and the arm 27 a to which the weight 28 is attached is brought into contact with the inner surface of the upper wall 31 of the casing 23.

Thus, it can be confirmed that the positioning means 22 on the floor plate side is located directly above the positioning means 23 on the top plate side.

As shown in FIG. 8, the positioning means 2
The reference numerals 2 and 23 are provided at two places on the floor plate 20. The floor plate 20 is moved and positioned so as to slide on the top plate 2 while looking at the display hole 32 so that the positioning mark 21 is located directly above the induction heating device 4.

The sole plate 20 and the positioning means 22, 23
Is provided, cooking can be performed with the cooking container 15 reliably positioned just above the induction heating device 4. For this reason, the cooking container 15 is not displaced and the heating efficiency is not reduced.

Since the cooking container 15 can be placed on the floor plate 20 and heated, the surface of the top plate 2 is less likely to be scratched or soiled. For this reason, the maintenance of the top plate 2 becomes easy, and the life is greatly improved. On the other hand, since the soleplate 20 can be manufactured at a low cost, it can be replaced even if the surface is damaged. Also, if you do not cook,
There is no problem because the floor plate 15 has been removed from the top plate.

On the other hand, in the electromagnetic cooking table according to the present invention, the total thickness of the surface material 5 and the sole plate 20 is only about 6.4 mm. Therefore, the distance between the heating coil of the electromagnetic induction heating device 4 and the upper surface of the top plate 2 is 10 mm.
As a result, the heating efficiency of the heating electromagnetic wave acting on the cooking container 15 does not decrease.

Further, when the floor plate 20 is not placed, there is no indication on the top plate indicating that the table is an electromagnetic cooking table. Therefore, the aesthetic appearance of a general table is greatly improved, and the versatility of the table is enhanced.

FIGS. 11 and 12 show a fourth embodiment.

In the electromagnetic cooking table shown in this embodiment, the detection target 40 is provided on the bottom plate side, and the detection device 41 is provided on the top plate side.

In the embodiment, an iron plate is used for the detection object 40, and a metal proximity sensor is used for the detection device 41. The output of the metal proximity sensor 41 is configured to be processed electrically and displayed on a display device 42 provided at the edge of the table.

According to this embodiment, as shown in FIG. 12, there are no indications such as positioning marks or projections on the top plate 2 and the floor plate 20, and the floor plate 20 has a form like a cooking tray. For this reason, aesthetic appearance is greatly improved,
A conventional electromagnetic cooking table can be configured.

The scope of the present invention is not limited to the above embodiment. In the embodiment, the surface material 5 having a thickness of 3.2 mm is employed. However, the thickness is not limited to this, and it is sufficient that the cooking container 15 has a mechanical strength capable of holding the cooking container 15 while heating it.

Further, the material of the backup material 6 is not limited to the embodiment, but may be a laminated material, a laminated plywood or the like.

Further, the positioning means provided on the floor plate and the top plate is not limited to the embodiment, but can be configured using various non-contact proximity sensors.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an electromagnetic cooking table according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a view showing a method of joining a surface material and a backup material.

FIG. 4 is a diagram showing a cross-sectional structure of a surface material.

FIG. 5 is an external view of a surface material provided with a mark indicating a position on which a cooking container is placed.

FIG. 6 is a sectional view showing a mounting structure of a temperature sensor.

FIG. 7 is an explanatory diagram of a method of detecting a shift of a cooking container from a temperature detected by a temperature sensor.

FIG. 8 is an overall perspective view showing a state where a cooking container is placed on a top plate via a floor plate.

FIG. 9 is a cross-sectional view showing the structure and operation of a bottom plate and positioning means.

FIG. 10 is a cross-sectional view showing the structure and operation of a bottom plate and positioning means.

11 is a sectional view showing another embodiment, and FIG.
FIG.

FIG. 12 is a perspective view showing the appearance of the electromagnetic cooking table according to the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electromagnetic cooking table 2 Top plate 3 Leg 4 Electromagnetic induction heating device 5 Surface material

Claims (18)

[Claims] 1. A top plate, a leg for holding the top plate at a predetermined height, and an electromagnetic induction heating device attached to a lower surface of the top plate, and mounted on a predetermined position of the top plate. An electromagnetic cooking table configured to heat a cooking container, wherein the top plate has a thickness of 3 mm to 5 mm reinforced with glass fiber.
While comprising a thin plate-shaped surface material having aluminum hydroxide as a main component and integrally covering the upper surface, and a plate-shaped backup material integrally joined to the back surface of the surface material. An electromagnetic cooking table in which a portion corresponding to a position where a cooking container is placed is cut out, and the electromagnetic induction heating device is arranged so as to face a back surface of the surface material. 2. The electromagnetic cooking table according to claim 1, wherein the surface material and the backup material at least in a portion surrounding the cutout portion are laminated so as to be relatively displaceable in a joining surface direction. 3. The method according to claim 1, wherein the surface material and the backup material at least at a portion surrounding the cutout portion are joined by a heat-resistant rubber-based adhesive so as to be relatively displaceable in a joining surface direction. 3. The electromagnetic cooking table according to any one of 2. 4. The electromagnetic cooking table according to claim 1, wherein a positioning mark indicating a position on which the cooking container is placed is provided on an upper surface of the surface material. 5. The electromagnetic cooking table according to claim 4, wherein the positioning mark is formed by performing a matting process on a surface of the surface material. 6. A temperature detecting sensor is provided at a plurality of positions on the surface material at a predetermined distance from the center of a heating area of the electromagnetic induction heating device, and a difference between outputs of the temperature sensors is used to determine a temperature of the heating container for the electromagnetic induction heating device. The electromagnetic cooking table according to any one of claims 1 to 5, wherein a positional shift is detected and displayed or a warning is issued. 7. A method for detecting the temperature of the top plate and / or the cooking container based on the output of the temperature sensor, and detecting the temperature of the top plate and / or the cooking container to a predetermined temperature or more. The electromagnetic cooking table according to claim 6, wherein the output of the electromagnetic induction heating device is reduced or the operation thereof is stopped. 8. A top plate having at least the entire surface integrally formed of a single member and flush with each other, a leg for holding the top plate at a predetermined height, and a ceiling mounted on the back side of the top plate. What is claimed is: 1. An electromagnetic cooking table comprising: an electromagnetic induction heating device for heating a cooking container on a plate, wherein the electromagnetic induction table is disposed on the top plate, and a plate for mounting and heating the cooking container; An electromagnetic cooking table provided with positioning means that can be positioned in a heating area of a heating device. 9. The top plate is made of a 3 mm to 5 mm thick aluminum hydroxide reinforced with glass fiber as a main component, and is a thin plate-like surface material integrally covering an upper surface, and is integrally joined to a back surface of the surface material. The electromagnetic cooking table according to claim 8, further comprising a plate-shaped backup material that is provided. 10. The electromagnetic cooking table according to claim 8, wherein a positioning mark indicating a mounting position of the cooking container is provided on an upper surface of the floor plate. 11. The positioning means is provided on a back side of the top plate and an object to be detected provided on one of the floor plates, and on the back side of the top plate and the other of the floor plates, and the floor plate is positioned at a predetermined position. 9. The apparatus according to claim 8, further comprising: a detection device configured to detect the object to be detected when the device is arranged, and a display unit provided on the electromagnetic cooking table or the floor plate to display an output of the detection device. 9. An electromagnetic cooking table according to claim 10. 12. The apparatus according to claim 11, wherein the object to be detected is a metal plate, and the detection device is a metal detection sensor.
An electromagnetic cooking table according to 1. 13. The electromagnetic cooking table according to claim 11, wherein the object to be detected is a magnet, and the detection device is a magnetic detection sensor. 14. The electromagnetic cooking table according to claim 11, wherein the object to be detected and the detection device are provided at two separate positions on a floor plate and a top plate, respectively. 15. Thickness 3 mm to 5 m reinforced with glass fiber
m, comprising a thin plate-shaped surface material mainly containing aluminum hydroxide of m and a plate-shaped backup material integrally joined to the back surface of the surface material, and the cooking container in the backup material. A top plate for an electromagnetic cooking table, in which a portion corresponding to a position for mounting an electromagnetic induction heating device is cut out and a concave portion for mounting an electromagnetic induction heating device is provided. 16. The top plate for an electromagnetic cooking table according to claim 15, wherein the surface material and the backup material at least in a portion surrounding the cutout portion are laminated so as to be relatively displaceable in a joining surface direction. 17. The top plate according to claim 15, further comprising: a bottom plate on which a cooking vessel can be placed and cooked by heating; and a positioning unit capable of positioning the bottom plate at a predetermined heating position. 18. A method for positioning a cooking vessel in an electromagnetic cooking table having a top plate whose surface is integrally formed by one member, comprising: positioning a placement plate at a predetermined position on the top plate; A method for positioning a cooking vessel in an electromagnetic cooking table, wherein the cooking vessel is positioned relative to an electromagnetic induction heating device by being positioned and mounted on the cooking vessel.