JPH09276126A - Electromagnetic cooking pot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pot relatively easy in manufacture, reduced in manufacturing cost and applicable to a pot main body made of a nonmetallic material such as pottery and glass. SOLUTION: On a bottom part inside the pot main body 1 made of ceramics, a material for receiving the high frequency magnetic field of an electromagnetic cooking device and generating heat based on the flow of an eddy current, a heat generating plate 5 made of stainless steel in this case, is sealed by the filling of a silicon filling material 11 and a sealing material 6 and provided. Also, a nut plate 10 provided with a screw hole 9 is fixed to the lower surface of the heat generating plate 5, and by screwing a screw 12 inserted to a hole part 3 formed on the bottom part of the pot main body 1 to the screw hole 9, the heat generating plate 5 is pressurized and fixed to the bottom part of the pot main body 1.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electromagnetic cooking pot that can be used in an electromagnetic cooker.

[0002]

Generally, it is said that an electromagnetic cooking pot that can be used in an electromagnetic cooker is made of iron or stainless steel, which is a metal material having a high electric resistance, with good efficiency. This is because the eddy current is generated in the pan itself by the high frequency magnetic field generated from the induction heating coil of the electromagnetic cooker, and the pan itself is used as a heating element by the Joule heat generated by the eddy current. However, there is a drawback in that the whole body made of iron is heavy.

Thus, for example, Japanese Utility Model Publication No. 63-45983 discloses a table made of cast aluminum which is provided with a metal sprayed layer of iron or the like on the backside thereof and a heat-resistant paint applied to the surface of the metal sprayed layer. ing. In the case of this one,
Since the tableware body is made of aluminum, it can be made lighter in weight than the whole made of iron. However, in order to spray iron or the like, it is necessary to raise the temperature to a very high temperature, and special equipment is required for the spraying, so that the manufacturing cost becomes high.

Further, Japanese Patent Application Laid-Open No. 5-177336 discloses a method of manufacturing tableware by casting a plate-shaped steel member on the back surface of tableware made of aluminum casting to form a composite. However, in the case of this, the steel member is easily distorted by heat during casting, so that special manufacturing is required to prevent this, and it is difficult to manufacture, and the manufacturing cost is also high.

In both of these cases, the tableware body is made of aluminum, but it cannot be applied to the tableware body made of earthenware such as a clay pot.

The present invention has been made in view of the above circumstances, and an object thereof is that the pot body is relatively easy to manufacture and the manufacturing cost can be reduced, and the pot body is made of a non-metallic material such as ceramics and glass. To provide an electromagnetic cooking pot that can be applied to.

[0007]

[MEANS FOR SOLVING THE PROBLEMS] In order to achieve the above-mentioned object, an electromagnetic cooking pan according to the present invention comprises a pan body formed of a non-metallic material and having a hole at the bottom, and a high frequency of an electromagnetic cooker. A heating plate formed in a plate shape by a material that generates heat when an eddy current flows in response to a magnetic field, and a heating plate sealed on the inner surface side of the bottom of the pot body via a heat-resistant sealing material,
The present invention is characterized in that the heating plate is fixed to the bottom of the pot body through the hole and is fixed.

According to the above construction, the weight of the pot body can be reduced by forming the pot body from a non-metallic material having a specific gravity smaller than iron. In addition, the heating plate is sealed to the bottom of the pan body via a sealing material, and is fixed by pressing it against the bottom of the pan body by the fixing means, so special equipment such as thermal spraying of iron is used. The heating plate can be fixed to the pan body relatively easily without needing to worry about distortion of the heating plate due to heat. Moreover, since the heating plate is configured to be fixed to the pot main body by the mechanical fixing force by the sealing material and the fixing means as described above, the pot main body can be applied to those made of non-metallic material such as ceramics and glass. it can.

In this case, the fixing means can be constructed by using a screw which is inserted into the hole portion of the bottom of the pan body and is screwed into the screw hole. As the fixing means, there is provided a mounting piece that is fixed to the lower surface of the heating plate and has its lower end inserted through the hole in the bottom of the pan body and protruding downward from the bottom of the pan body. It can also be configured by bending and fixing to the bottom side.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, in FIGS. 1 and 2, the pot main body 1 is made of a non-metallic material, in this case, made of pottery in a circular container shape, and a lid 2 also made of pottery is detachably attached to the upper surface thereof. It is designed to be used. The bottom portion 1a of the pot body 1 is formed in a flat plate shape, and the bottom portion 1a has six circular holes 3 (see FIG. 1).
Only two are shown). These 6 holes 3
Are arranged on the same circumference centered on the center of the bottom portion 1a at substantially equal intervals. On the lower surface side of the bottom portion 1a, each hole 3
The annular protrusion 4 is integrally provided so as to surround the.
Then, the inner surface side of the bottom portion 1a of the pan body 1 (upper surface side in FIG. 1)
A heat generating plate 5 is arranged in the.

The heating plate 5 has a circular plate shape so as to correspond to the bottom 1a of the pan body 1. In this case, stainless steel (for example, SUS304) having a thickness of about 1.5 mm is used. There is. The stainless steel that constitutes the heating plate 5 is one of the materials that generate heat when an eddy current flows under the high-frequency magnetic field of an electromagnetic cooker (not shown). As shown in FIGS. 3 and 4, a heat-resistant sealing material 6 made of, for example, silicone rubber is provided on the outer peripheral portion of the heat generating plate 5 so as to extend over the upper and lower surfaces. A plurality of communication holes 7 are formed in the outer peripheral portion of the heat generating plate 5, and the communication holes 7
The upper portion and the lower portion of the sealing material 6 are connected to each other through. A plurality of annular protrusions 8 are formed on the lower surface side of the sealing material 6 in order to improve the sealing property.

Two nut plates 10 having screw holes 9 are fixed to the lower surface of the heat generating plate 5 by spot welding. The screw hole 9 is the hole 3 of the bottom 1a of the pan body 1.
Corresponding to the above, three nut plates 10 are formed, and a total of six nut plates 10 are formed. Each nut plate 10 is also made of stainless steel (for example, SUS304).

The heating plate 5 is arranged at the bottom of the pan body 1 via a sealing material 6, and the bottom part of the pan body 1 is covered by a silicone filler 11 applied all around the outer periphery of the sealing material 6. It is sealed on the inner surface side of 1a via a sealing material 6. In addition, each screw hole 9 has a bottom portion 1 of the pan body 1.
The tip end of a screw 12 that constitutes the fixing means and is inserted through each hole 3 from the lower surface side of a is screwed together.
By fixing the heating plate 5 to the bottom part 1 of the pan body 1,
It is pressed against a and the sealing material 6 is compressed to improve the sealing property and fixed.

A washer 13 is interposed between the head of each screw 12 and the lower surface of the bottom 1a. The screw 12 also
Similar to the nut plate 10, stainless steel (for example, SUS30
4) is used. The heating plate 5 and the bottom portion 1a of the pan body 1
A space 14 corresponding to the thickness of the nut plate 10 is formed between and. The electromagnetic cooking pot 15 is configured as described above.

As a procedure for attaching the heating plate 5 to the pot body 1, the silicone filler 11 may be applied to the inner peripheral surface of the bottom portion 1a and then the screw 12 may be tightened, or vice versa. , After tightening the screws 12,
The silicone filler 11 may be applied between the sealing material 6 and the bottom portion 1a.

When cooking with the electromagnetic cooker using the pan 15 thus constructed, the pan main body 1 is placed on an electromagnetic cooker (not shown) and the electromagnetic cooker is operated. Along with this, a high frequency magnetic field is generated from the induction heating coil of the electromagnetic cooker, the heating plate 5 in the pan body 1 receives the high frequency magnetic field, and an eddy current is generated in the heating plate 5. The heating plate 5 itself generates heat due to the Joule heat generated by the flow of the eddy current, and the food to be cooked (not shown) contained in the pan body 1 is cooked by the heat. In this case, since the heat generating plate 5 and the bottom portion 1a of the pan body 1 are sealed by the sealing material 6 and the silicone filling material 11, the water content in the pan body 1 is a space on the back side of the heat generating plate 5. 14
It can be surely prevented from leaking to the side.

According to the above-described embodiment, the pot body 1 is made of pottery, which is a non-metallic material having a smaller specific gravity than iron, so that it is possible to reduce the weight as compared with the case where the whole is made of iron. The heating plate 5 seals the bottom of the pan body 1 with the sealing material 6 and the silicone filling material 11.
Since the fixing means using the screw 12 presses against the bottom portion 1a of the pan body 1 to seal and fix it, no special equipment such as thermal spraying of iron is required and the heating plate 5 The heating plate 5 can be fixed to the pan body 1 relatively easily without worrying about distortion due to heat. Therefore, the electromagnetic cooking pot 15 can be manufactured relatively easily and the manufacturing cost can be reduced.

Moreover, the heating plate 5 is the bottom portion 1a of the pan body 1.
Since most of the amount of heat generated by Joule heat is directly transmitted to the cooked object side and the conduction to the pan body 1 side is small, thermal efficiency is good, and further, to the bottom 1a side of the pan body 1 Since the heat conduction is low, there is a great advantage that even if the pan body 1 is moved from the electromagnetic cooker to another place, there is little concern that the surface will be burnt.

The heating plate 5 is made of the silicone filler 11
Alternatively, it may be possible to fix it to the pan body 1 only by the adhesive force of another adhesive, but in such a case, the heating plate 5
There is a concern that is likely to come off the pan body 1. In this regard,
In this embodiment, as described above, the silicone filler 11
In addition to the seal, the structure is such that the heating plate 5 is fixed to the pan body 1 by a mechanical fixing force by the fixing means using the screw 12, so that the heating plate 5 can be fixed to the pan body 1 more reliably, and the heating plate 5 is fixed. It is possible to eliminate the fear of coming off the main body 1.

Furthermore, in this embodiment, since stainless steel is used as the heat generating plate 5, it is hard to rust and has excellent durability even when it is arranged in the pan body 1, and there is no problem in hygiene.

In the first embodiment described above, instead of fixing the nut plate 10 to the lower surface of the heat generating plate 5,
A plurality of screws as fixing means are fixed, each of these screws is inserted into the hole 3, and nuts each having a screw hole are screwed into the lower end of the screw protruding from the hole 3. You can also

Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the above-described first embodiment are designated by the same reference numerals, the description thereof will be omitted, and different parts will be described.

First, referring to FIGS. 5 and 6, the pot body 21
Like the first embodiment, is formed into a circular container shape by pottery, and a lid 22 also made of pottery is provided on the upper surface of this.
Can be put on and taken off freely. Pan body 21
In the bottom portion 21a of the
Are formed. The hole 23 is set to have a size slightly smaller than the heat generating plate 5.

As shown in FIGS. 7 and 8, two mounting members 24 are fixed to the lower surface of the heat generating plate 5 by spot welding, and each mounting member 24 faces downward and constitutes a fixing means. Three mounting pieces 25 are integrally formed.
Each attachment piece 25 has a long hole 25a formed at a bent portion. The mounting bracket 24 is also made of stainless steel (for example, SU
S304) is used.

The heat generating plate 5 is arranged at the bottom of the pan body 21 via the sealing material 6, and the silicone filler 11 is applied to the outer peripheral portion of the sealing material 6 over the entire circumference.
It is sealed on the inner surface side of the bottom portion 21 a of the pan body 21.
As will be described later, the sealing material 6 is compressed by bending and caulking the mounting piece 25, and is in close contact with the inner surface side of the bottom portion 21a of the pan body 21. Also, the pot body 21
A cover 26 made of a non-metallic material, such as a heat-resistant plastic, having a size that covers the hole 23 from below is arranged on the lower surface side of the bottom portion 21a. The cover 26 is formed with six insertion holes 27 corresponding to each mounting piece 25,
Each mounting piece 25 inserted into the hole 23 is inserted into the insertion hole 27.
The lower end of the is inserted.

Then, by bending the lower end of the mounting piece 25 toward the bottom 21a of the pan body 21 and caulking it,
The heating plate 5 is fixed so as to be pressed against the bottom portion 21a of the pan body 21, and the cover 26 is also fixed at the same time. In this case, the cover 26 covers the hole 23 from below and also covers the welded portion of the mounting member 24. The electromagnetic cooking pot 28 is configured as described above.

Also in this case, the procedure for attaching the heating plate 5 to the pan body 21 is as follows:
After applying 1 to the outer peripheral portion on the inner surface side of the bottom portion 21a, the mounting piece 25 may be caulked, or conversely, the mounting piece 25
After caulking, the silicone filler 11 may be applied between the sealing material 6 and the bottom portion 21a.

According to the second embodiment as described above, in addition to being able to obtain the same operation and effect as those of the first embodiment, there are the following advantages in particular. That is, the bottom portion 21a of the pan body 21 is slightly smaller than the heating plate 5,
Since the relatively large hole portion 23 is formed, the weight of the pan main body 21 can be reduced correspondingly, and the weight can be further reduced. Further, by covering the hole 23 with the cover 26, the appearance of the bottom 21a of the pan body 21 can be improved. Further, since the cover 26 is configured to be attached using the attachment piece 25 for attaching the heat generating plate 5, it is possible to suppress an increase in the number of parts for attaching the cover 26.

The present invention is not limited to the embodiments described above and shown in the drawings. For example, the pan body 1,
21 may be made of porcelain or glass in addition to pottery, and the shape of the pot main bodies 1 and 21 is not limited to a circular shape and may be a rectangular shape, etc., and may be appropriately modified without departing from the scope of the invention. .

[0030]

According to the invention described in claim 1, since the pot body is made of a non-metallic material, the weight can be reduced. In addition, the heating plate is sealed to the bottom of the pan body with a sealing material, and is fixed by pressing it against the bottom of the pan body by the fixing means, so it is relatively easy to attach the heating plate to the pan body. Can be fixed to, and the pot for electromagnetic cooking can be manufactured relatively easily, and the manufacturing cost can be reduced. Moreover, the heating plate is far from the bottom of the pan body,
Most of the heat generated by Joule heat on the heat generating plate is conducted to the cooked product side, and the heat conduction to the pan body side can be reduced, resulting in good thermal efficiency and further heating of the bottom bottom surface of the pan body. In order to prevent it, there is an advantage that it is possible to prevent the other side of the place where the pan body is placed from burning.

According to the second and third aspects of the present invention, the heating plate can be easily fixed to the pan body. According to the invention as set forth in claim 4, since the relatively large hole portion, which is slightly smaller than the heating plate, is formed in the bottom portion of the pan body, the weight of the pan body can be reduced by that amount, and the weight can be further reduced. It will be possible. Also, by covering the hole with a cover, the appearance of the bottom of the pan body can be improved. Further, since the cover is configured to be fixed by using the fixing means for attaching the heat generating plate, it is possible to suppress an increase in the number of parts for attaching the cover.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional front view showing a first embodiment of the present invention.

FIG. 2 is a bottom view

FIG. 3 is a vertical sectional front view of a heating plate and a sealing material.

FIG. 4 is a bottom view of the heating plate and the sealing material.

FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG.

FIG. 7 is a diagram corresponding to FIG. 3;

FIG. 8 is a view corresponding to FIG.

[Explanation of symbols]

1 is a pan body, 1a is a bottom part, 3 is a hole part, 5 is a heating plate, 6 is a sealing material, 9 is a screw hole, 10 is a nut plate, 11 is a silicone filling material, 12 is a screw (fixing means), and 15 is Electromagnetic cooking pot, 21 is a pot body, 21a is a bottom part, 23 is a hole part, 24
Is a mounting bracket, 25 is a mounting piece (fixing means), 26 is a cover, and 28 is an electromagnetic cooking pot.

Claims (4)

[Claims] 1. A plate body made of a non-metallic material and having a hole at the bottom, and a plate-like material made of a material that generates heat when an eddy current flows under the high frequency magnetic field of an electromagnetic cooker, A heating plate sealed on the inner surface side of the bottom of the pan body via a heat-resistant sealing material; and a fixing means for fixing the heating plate by pressing it against the bottom of the pan body through the hole. Characteristic electromagnetic cooking pot. 2. The pan for electromagnetic cooking according to claim 1, wherein the fixing means includes a screw which is inserted into a hole in the bottom of the pan body and is screwed into the screw hole. 3. The fixing means includes a mounting piece that is fixed to the lower surface of the heating plate and has a lower end that is inserted into a hole in the bottom of the pan body and projects downward from the bottom of the pan body. The pan for electromagnetic cooking according to claim 1, wherein the pan is bent and fixed to the bottom side of the pan body. 4. The hole in the bottom of the pan body is formed to have a size slightly smaller than that of the heat-generating plate, and a non-metallic cover that covers the hole from below is heated by the fixing means on the lower surface of the bottom of the pan body. An electromagnetic cooking pan according to any one of claims 1 to 3, wherein the pan is fixed together with the plate.