JPH0898773A - Production of material for electromagnetic cooking pot, electromagnetic cooking pot and production thereof - Google Patents

Abstract

PURPOSE: To obtain an inexpensive material for electromagnetic cooking pot easy to produce without generating discoloration or deterioration at the time of production and wrinkles on the outer surface thereof at the time of molding processing. CONSTITUTION: A silicone adhesive sealer 13 is applied to either one of inner and outer surface materials 11, 12 having a shape necessary for producing an electromagnetic cooking pot to bond both materials 11, 12 and the whole is pressed at the normal temp. to be integrally bonded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a material for an electromagnetic cooking pot for cooking rice, simmered foods, stir-fried foods, fried foods, etc. by an electromagnetic cooker utilizing electromagnetic induction heating, and an electromagnetic cooking pan, The present invention relates to a manufacturing method thereof.

[0002]

2. Description of the Related Art In an electromagnetic cooker, a high frequency current is supplied to an electromagnetic induction coil installed below a cooking pot to generate an alternating magnetic field and an eddy current is passed through the cooking pot. This eddy current changes into Joule heat according to the specific electric resistance of the material forming the cooking pot, causing the cooking pot to generate heat. Therefore, various foods such as cooked rice, boiled foods, stir-fried foods, and fried foods can be heated and cooked by the electromagnetic cooker, and moreover, it is safe and clean because it does not generate flames. In addition, since the cooking pot directly generates heat, the heat efficiency is high, and it is rapidly spreading due to the recent social demand and convenience of energy saving.

As a material for a cooking pot of such an electromagnetic cooker, a non-magnetic material such as aluminum or copper has a low electric resistance because of its low electric resistance, and a cooking pot made of iron radiates heat from the side. Has a drawback that it is large and can only cook a very limited range, and that it is heavy. Therefore, recently, as shown in, for example, Japanese Utility Model Publication No. 2-27518, a double-structure cooking pan made of a glad material in which the inner surface side material of the cooking pan is aluminum and the outer surface side material is stainless is widely used. There is.

The glad material as described above is, for example, a stainless steel plate having a thickness of 0.55 mm and an aluminum plate having a thickness of 2.35 mm, which are pressed together to form a composite having a thickness of 2.1 mm.
A glat material having a stainless plate thickness of 0.55 mm and an aluminum plate thickness of 1.55 mm is manufactured. And
A cooking pot is manufactured by cutting into a shape (for example, a disk shape) required for manufacturing a cooking pot, coating the surface of aluminum with a fluororesin, and drawing.

By the way, in the cooking pot made of the above-mentioned glad material, it is difficult to manufacture the glad material itself and it is expensive, and moreover, the plate thickness varies greatly (for example, 2.1 m).
m ± 0.3 mm). Therefore, when drawing,
First, the glad material is sorted by thickness and divided into several types of groups (for example, 6 types), and drawing is performed using dies with different dimensions for each group, which is extremely troublesome and costly. It was Further, during the drawing process, the aluminum plate and the stainless plate may be peeled off or an air layer may be formed between them, resulting in poor yield and further cost increase.

In order to solve such a problem, in Japanese Utility Model Laid-Open No. 6-52720, an inner surface material made of an aluminum plate and an outer surface material made of a stainless steel plate are bonded with a heat resistant polymer material. A cooking pot for electromagnetic induction heating cooking made of materials is disclosed.

In this cooking pot, a heat-resistant polymer material such as polyphenylene sulfide (PPS) is coated on one surface of an aluminum plate sized to an appropriate size, and a stainless steel plate is stacked on the heat-resistant polymer material to form about 300 ° C. The pressure is applied under high temperature to produce a cooking pot material, and this material is molded and processed to produce a cooking pot.

[0008]

The material for the cooking pot as described above is easy and inexpensive to manufacture, but it is formed by pressurizing it at a high temperature of about 300 ° C., so that the material constituting the material is used. , In particular, the stainless steel plate may be discolored or deteriorated to adversely affect electromagnetic induction heating,
In addition, there are various problems such as wrinkles on the outer surface during molding.

The present invention has been made in order to solve the above-mentioned problems, and there is no risk of discoloration or deterioration during manufacturing, or wrinkles on the outer surface during molding, and the electromagnetic cooking is easy and inexpensive to manufacture. The purpose of the present invention is to obtain a manufacturing method of a pan material, an electromagnetic cooking pan, and a manufacturing method thereof.

[0010]

The method of manufacturing the material for the electromagnetic cooking pot according to the present invention is as follows. (1) A silicone adhesive sealant is applied to either the inner surface side material or the outer surface side material having the shape required for manufacturing an electromagnetic cooking pot to bond the inner surface side material and the outer surface side material, and then these are kept at room temperature. Press down and join together.

A method for manufacturing an electromagnetic cooking pot using the above-mentioned material or a material similar thereto is as follows. (2) The material of (1) above is processed.

According to the manufacturing method of (1) above, a silicone adhesive sealant is applied to the bottom of the electromagnetic cooking pot of either the inner surface side material or the outer surface side material or a range corresponding to the bottom side wall lower part. A material is manufactured and this material is processed.

(4) A silicone adhesive sealant is applied to a position facing the electromagnetic induction coil installed below the electromagnetic cooking pot of either the inner surface side material or the outer surface side material or in the vicinity thereof, and the above-mentioned ( A material is manufactured according to the manufacturing method of 1), and this material is molded and processed.

(5) A hole is provided in a portion corresponding to the bottom of the electromagnetic cooking pot of the outer surface side material, and silicon is provided in the entire surface excluding this hole, the bottom excluding the hole, or the range excluding the hole and the bottom and the side wall lower part. An adhesive sealant is applied, a material is manufactured according to the manufacturing method of the above (1), and this material is molded.

(6) A hole is provided in a portion corresponding to the bottom of the electromagnetic cooking pan of the outer surface side material, and a plurality of small holes are provided at a position not facing the electromagnetic induction coil installed below the electromagnetic cooking pan, Apply the silicone adhesive sealant to the entire surface excluding holes and small holes, the bottom excluding holes and small holes, or the range corresponding to the bottom excluding holes and small holes and the lower part of the side wall, and (1) above
A material is manufactured according to the manufacturing method of 1. and this material is molded and processed.

(7) The outer surface side material is formed smaller than the inner surface side material, a silicone adhesive sealant is applied to the entire surface of the outer surface side material, and a material is manufactured according to the manufacturing method of the above (1). Mold and process.

Another method of manufacturing the material for the electromagnetic cooking pot according to the present invention is as follows. (8) Apply the silicone oil compound to either the inner surface side material or the outer surface side material of the shape required to manufacture the electromagnetic cooking pot, stack the inner surface side material and the outer surface side material, and pressurize at room temperature. Temporarily bond.

(9) A powder material having a high thermal conductivity and a hardness equal to or lower than that of the material on the inner surface side is mixed in the silicone oil compound.

The method for manufacturing an electromagnetic cooking pot using the materials (8) and (9) or materials similar thereto is as follows. (1) The material of (8) or (9) is molded.

(11) A silicone oil compound is applied to the bottom of either one of the inner-side material or the outer-side material for the electromagnetic cooking pan or the range corresponding to the bottom and the lower part of the side wall, and the above-mentioned (8) or (9) is applied. A material is manufactured according to the manufacturing method, and this material is molded.

(12) A silicone oil compound is applied to a position facing the electromagnetic induction coil installed below the electromagnetic cooking pot of either the inner surface side material or the outer surface side material or in the vicinity thereof, and the above (8) is applied. Alternatively, a material is manufactured according to the manufacturing method of (9), and this material is molded.

(13) A hole is provided in a portion corresponding to the bottom of the electromagnetic cooking pot of the outer surface side material, and silicon oil is provided on the entire surface excluding this hole, the bottom excluding the hole, or the range excluding the hole and the bottom and side wall lower part. Apply compound (8)
Alternatively, a material is manufactured according to the manufacturing method of (9), and this material is molded.

(14) A hole is provided in a portion corresponding to the bottom of the electromagnetic cooking pot of the outer surface side material, and a plurality of small holes are provided at a position not facing the electromagnetic induction coil installed below the electromagnetic cooking pot, Silicone oil compound is applied to the entire surface excluding holes and small holes, or the bottom excluding holes and small holes, or the range corresponding to the bottom excluding holes and small holes and the lower part of the side wall, according to the manufacturing method of (8) or (9) above. Manufacture
This material is processed.

Still another method for producing the material for the electromagnetic cooking pot according to the present invention is as follows. (15) A double-sided adhesive tape having a high thermal conductivity is sandwiched between an inner surface side material and an outer surface side material having a shape required for manufacturing an electromagnetic cooking pot, and pressure-bonded at room temperature to temporarily bond them.

The method for producing an electromagnetic cooking pot using the material of (15) or a material similar thereto is as follows. (16) The material of (15) above is molded.

(17) A double-sided adhesive tape having a size corresponding to the bottom of the pot for electromagnetic cooking or the bottom and the lower part of the side wall is sandwiched between the material on the inner surface side and the material on the outer surface side, and according to the manufacturing method of (15) above. To produce a material, and to form and process this material.

(18) A double-sided adhesive tape between the inner surface side material and the outer surface side material, in which a portion not facing the electromagnetic induction coil is cut off within the range of the electromagnetic induction coil installed below the electromagnetic cooking pot. A material is manufactured by sandwiching the material according to the manufacturing method (15), and the material is molded.

(19) A hole is provided in a portion of the outer surface side material corresponding to the bottom of the electromagnetic cooking pot, and a hole is provided between the outer surface side material and the inner surface side material at a position aligned with the hole, and the outer surface side. A raw material is manufactured according to the manufacturing method of (15) above by sandwiching a double-sided adhesive tape having a size substantially equal to or smaller than that of the material, and the raw material is molded.

(20) A hole is provided substantially at the center of the outer surface side material, and a plurality of small holes are provided at positions that do not face the electromagnetic induction coil installed below the electromagnetic cooking pot. (1) with a double-sided adhesive tape having a hole and a small hole at a position aligned with the hole and the small hole and having a size substantially equal to or smaller than that of the outer surface side material.
A material is manufactured according to the manufacturing method of 5), and this material is molded.

Another method of manufacturing the electromagnetic cooking pot according to the present invention is as follows. (21) While forming the inner pot with the inner material,
An outer pot is formed from the outer material, a silicone adhesive sealant or silicone oil compound is applied to the outer surface of the inner pot or the inner surface of the outer pot, and the inner pot is press-fitted into the outer pot. (22) The outer pot of (21) above is formed shallower than the inner pot.

(23) In the method of manufacturing a pan for an electromagnetic cooker according to (7) or (22), the upper end of the outer pan and the outer wall of the inner pan are formed substantially flat.

In the method for manufacturing an electromagnetic cooking pot according to (21) or (22) above, the method is constructed as follows. (24) A silicone adhesive sealant or a silicone oil compound is applied to the outer surface of the inner pot or the bottom of the inner pot of the outer pot or the bottom and the lower part of the side wall.

(25) A silicone adhesive sealant or silicone oil compound is applied to a position facing the electromagnetic induction coil installed below the electromagnetic cooking pot of either the inner pot or the outer pot, or in the vicinity thereof. .

(26) A hole is provided in the bottom of the outer pot, and a silicone adhesive sealant or a silicone oil compound is applied to the inner surface excluding this hole, the bottom excluding the hole, or the bottom excluding the hole and the inner surface of the lower side wall.

(27) A hole is provided at the bottom of the outer surface side pan, and a plurality of small holes are provided at positions not facing the electromagnetic induction coil installed below the electromagnetic cooking pan. Apply silicone adhesive sealant or silicone oil compound to the bottom excluding the small holes or the bottom excluding the small holes and the inner surface of the side wall lower part.

(28) The upper end of the electromagnetic cooking pan manufactured by each of the above means is bent outward substantially horizontally to form a flange portion, and the flange of the inner surface side material forming the flange portion is bent. And fix the flange of the outer material.

(29) A sealant is applied or filled between the material on the inner surface side and the material on the outer surface side of the flange portion in the above (28), or a packing is interposed.

(30) An electromagnetic cooking pot manufactured by each of the above manufacturing methods.

[0039]

Since the materials for the electromagnetic cooking pot and the electromagnetic cooking pot according to the present invention are all manufactured at room temperature, the molded electromagnetic cooking pot is not deteriorated or discolored. No wrinkling occurs on the surface. Therefore, it is possible to obtain an electromagnetic cooking pot with high yield, high quality and high thermal conductivity.

[0040]

【Example】

Example 1 FIG. 1 shows an example of a method for manufacturing a material for an electromagnetic cooking pot (hereinafter referred to as a cooking pot) of an electromagnetic cooker according to the present invention.
Plate-shaped aluminum material 11 (for example, JISH4000
No. 3004) and the plate-shaped stainless steel material 12 (for example, ferrite-based SUS430) are cut into a shape required for manufacturing a cooking pot, for example, a disk shape, as shown in FIG. As shown in, a silicon adhesive sealant 13 having a high thermal conductivity is applied to one surface of the stainless material 12 (or the aluminum material 11). Then, the two are superposed and joined, the surface of the aluminum material 11 is coated with the fluororesin 14, or a surface treatment such as an alumite treatment (hereinafter collectively referred to as a surface treatment) is performed, and the result is shown in FIG. The material 1 as shown is manufactured.

The manufacturing method of the material 1 as described above will be described in more detail as follows. For example, a plate-shaped aluminum material 11 having a thickness of 1.3 mm, which is an inner surface side material, and a plate-shaped stainless material 12 having a thickness of 0.5 mm, which is an outer surface side material, are used as shown in FIG. Is cut into a shape (a disk shape in the present embodiment) necessary for manufacturing, and on one surface of the stainless material 12 (or the aluminum material 11), a fluid paste-like silicon adhesive sealant 13 (for example, three bond ( Co., Ltd. sales of ThreeBond 1225 ... Thermal conductivity of 2.5 × 10 ⁻³ W / m · K) is applied to a thickness of, for example, 0.2 mm by roll coating, brush coating, or the like.

Then, the aluminum material 11 and the stainless steel material 12 are superposed on each other with the coated surface facing inward, and are adhered by pressurizing at a pressure of, for example, about 1 kg / cm ^{2 at} room temperature, and are naturally dried, and then the aluminum material 11 is formed. By coating the surface of the with a fluororesin 14, the raw material 1 as shown in FIG. 1 (b) is completed. Instead of coating the fluororesin, a surface treatment such as alumite treatment may be applied. The material 1 manufactured as described above had almost no variation in the plate thickness, and the result of the trial manufacture according to the above-mentioned example was 2.0 mm ± 0.1 mm.

As shown in FIG. 3A, for example,
If the aluminum materials 11 and 11 are arranged on both sides of the two stainless steel materials 12 and 12, respectively, and the silicon adhesive sealant 13 is applied to one of the facing surfaces of the respective materials to bond them, the result shown in FIG. ), It is possible to manufacture a multi-layered material 1a having four layers or more.

Example 2 Next, a cooking pot using the above material 1 and a method for manufacturing the same will be described. FIG. 4 is a schematic view of a cooking pot that uses the material 1 and is formed by pressing (drawing). In this case, as described above, since the material 1 has almost no variation in plate thickness, the cooking pot 2 is prepared by using the same size mold.
0 can be produced. Further, an aluminum material 11 which is an inner surface side material and a stainless steel material 1 which is an outer surface side material
Since it is bonded to the silicone adhesive sealant 14 by a silicon adhesive sealant 2, the aluminum material
No air layer is formed between 1 and the stainless material 12. The silicone adhesive sealant 11 is used for the cooking pot 2
Even after the completion of 0, the fluid state is maintained between the inner surface side material and the outer surface side material. Further, in forming, other than pressing, for example, superplastic forming may be used.

Further, a flange portion 21 is provided at the upper end of the cooking pot 20. This flange portion 21 is shown in FIG.
5, the flange 11a of the aluminum material 11 and the flange 12a of the stainless steel material 2 may be formed substantially horizontally and have the same length, or, as shown in FIG. 5, the flange 11a of the aluminum material 11 may be formed. May be formed wider than the flange 12a of the stainless material 12, and may be bent inward to wrap the flange 12a of the stainless material 12 and fix it.

In this case, as shown in FIG.
As shown in (a), the outer diameter of the aluminum material 11 is formed larger than the outer diameter of the stainless material 12, and when the cooking pot 20 is formed by press working, as shown in FIG. 6 (b), The flange 11a of the aluminum material 11 may be bent to wrap the flange 12a of the stainless material 12. When the material is manufactured using a silicone oil compound or a double-sided adhesive tape as described later, when manufacturing the material 1, the flanges 11a and 12a are widened, and therefore the aluminum material 11 and the stainless steel material 12 have a large diameter. It is formed on the substrate and is pressed during the pressing process as shown in FIG.
As shown in (d), the outer peripheral portion of the stainless material 12 is cut off, and as shown in FIG. 6 (b), the flange 11a of the aluminum material 11 is bent, and the flange 12a of the stainless material 12 is wrapped and fixed. You may do it. With this configuration, the flange portion 20 of the cooking pot 20
In addition to increasing the mechanical strength, the end portion of the flange portion 21 does not peel off even after long-term use.

Further, the flange 11 of the aluminum material 11
When a is bent and the flange 12a of the stainless material 12 is wrapped, as shown in FIGS. 7 (a) and 7 (b), a sealant is applied between the flange 11a of the aluminum material 11 and the flange 12a of the stainless material 12. 22 may be applied or filled, or as shown in FIGS. 7 (c), (d), and (e), a packing 23 may be interposed between the aluminum material 11 and the stainless material 12 to seal them. Good.

Example 3 FIGS. 8 and 9 are schematic views of another example of the cooking pot made of the material produced according to the material 1. This embodiment is shown in FIG.
As shown in (a), the silicon material 12 (or aluminum material 11) is silicon-bonded to a certain range from the center of one surface (the bottom of the cooking pot to be manufactured or the range corresponding to the bottom of the side wall). A sealant 13 was applied, and Example 1 was applied.
The material 1a as shown in FIG. 10 (b) is manufactured according to the above method.

Then, if this raw material 1a is formed by pressing or the like, a cooking pot 20 as shown in FIG. 8 or 9 can be manufactured. When the cooking pan 20 shown in FIG. 8 is provided with the electromagnetic induction coil corresponding to the bottom part to the lower part of the side wall, the cooking pan 20 shown in FIG. 9 is provided with the electromagnetic induction coil corresponding to only the bottom part. Especially effective when using. In the present embodiment, the cooking pot 2
An air layer is formed in a part between the inner surface side material and the outer surface side material of the side wall of 0, but the part corresponding to the electromagnetic induction coil is bonded by the silicon adhesive sealant 13 having a high thermal conductivity. Therefore, there is no hindrance to the transfer of the heat generated in the outer surface side material to the inner surface side material, and the air layer can prevent the heat dissipation from the inner surface side material.

Embodiment 4 FIG. 11 is a schematic view of another embodiment of the cooking pot. In this embodiment, as shown in FIG. 12A, silicon bonding is performed on one surface of the stainless material 12 (or aluminum material 11) corresponding to the electromagnetic induction coil 24 installed below the cooking pot 20. The sealant 13 is applied in a spiral shape, for example, and the stainless material 12 and the aluminum material 11 are adhered to each other according to the method of the first embodiment to manufacture the material 1b as shown in FIG. 12 (b).

By molding this material 1b by pressing or the like, a cooking pot 20 as shown in FIG. 11 can be manufactured. The cooking pan 20 of FIG. 11 shows a case where the bottom and a part of the side wall are bonded with the silicone adhesive sealant 13 in correspondence with the installed electromagnetic induction coil 24, but only the bottom is supported. If 24 is provided, the silicone adhesive sealant 13 may be applied correspondingly and only a part of the bottom of the aluminum material 11 and the stainless material 2 may be bonded.

Embodiment 5 FIG. 13 is a schematic view of another embodiment of the cooking pot. In this embodiment, as shown in FIG. 15A, a hole 16 is provided at the center of the stainless steel material 12, and a silicon adhesive sealant 13 is applied to one surface excluding the hole 16 and the same as in the first embodiment. The aluminum material 11 and the stainless steel material 12 are adhered by the above method to manufacture the material 1c as shown in FIG. The size of the hole 16 was 40 mm in diameter in the example. Then, if the material 1c is formed by press working or the like, as shown in FIG.
It is possible to manufacture the cooking pot 20 as shown in FIG.

According to this embodiment, since the hole 16 is formed in the bottom of the stainless steel material 12 which is the outer surface side and the aluminum material 11 which is the inner surface material is exposed, the temperature sensor is brought into contact with this exposed portion. For example, the temperature of the cooking pot 20 can be accurately measured. The hole 16 also functions as an air vent hole when the material 1c is molded. In addition,
The hole 16 does not necessarily have to be provided in the center of the bottom, but may be provided in correspondence with the installation position of the temperature sensor.

The hole 16 provided in the bottom portion of the cooking pot 20 according to this embodiment may be formed as shown in FIG. 13, but as shown in FIG. 14, it is provided in the bottom portion of the aluminum material 11 which is the inner surface side material. A convex portion 25 that protrudes inward at the time of processing is provided, and the peripheral portion of the hole 16 of the stainless material 12 that is the outer surface side material is provided with the convex portion 2.
You may make it bend | fold along the lower surface inclination part of 5, and may be fixed.

Embodiment 6 FIGS. 16 and 17 are schematic views of other embodiments of the cooking pot. In this embodiment, a hole 16 is formed in the center of the stainless steel plate 12 as described with reference to FIG. 15, and a certain range around the hole 16 (a range corresponding to the bottom of the cooking pot to be manufactured or the bottom to the bottom of the side wall). Silicon adhesive sealant 13 is applied to the above, and aluminum material 11 and stainless steel material 12 are adhered by the method according to Example 1 to form material 1d as shown in FIG. 18, and this material 1d is formed by pressing or the like. 16
Alternatively, the cooking pot 20 as shown in FIG. 17 is manufactured. The cooking pot 20 according to this embodiment is also shown in FIGS. 8, 9 and 1.
It has the same functions and effects as the embodiment shown in FIG.

Embodiment 7 FIG. 19 is a schematic view of another embodiment of the cooking pot. In this embodiment, as shown in FIG. 20, a hole 16 is formed in the central portion of the stainless material 12 that is the outer surface side material, and a plurality of small holes 17 are provided in a portion that does not face the electromagnetic induction coil 24. A silicon adhesive sealant 13 is applied to one surface except for the holes 16 and the small holes 17, and the aluminum material 11 and the stainless steel material 12 which are inner surface side materials are joined according to the method of the first embodiment. Then, if this material is formed by pressing or the like, the cooking pot 20 as shown in FIG.
Can be manufactured.

In the cooking pot 20 thus constructed, the temperature sensor inserted through the large hole 16 in the center as described above is brought into contact with the aluminum material 11 which is the inner surface side material and processed. And the small hole 17 functions as an air vent hole during processing. In the present embodiment, when the electromagnetic induction coil 24 is provided on both sides of the side wall of the cooking pot 20, the silicone adhesive sealant 1 is also used as in the case of the embodiment of FIG.
3 may be applied to the side wall of the stainless steel material 12 so as to face the electromagnetic induction coil 24 and adhered thereto, or the silicone adhesive sealant 1 may be applied to the entire surface excluding the holes 16 and the small holes 17.
3 may be applied and the cooking pot 20 may be manufactured according to the embodiment of FIG.

Embodiment 8 FIG. 21 is a schematic view of another embodiment of the cooking pot. In the present embodiment, as shown in FIG. 22, the aluminum material 11 which is the inner surface side material is formed in a size corresponding to the shape of the inner surface side material of the cooking pot 20 to be manufactured, and the stainless steel material which is the outer surface side material. 12 is formed to be smaller than the aluminum material 11, that is, a shape corresponding to a part of the side wall from the bottom of the cooking pot 20 manufactured above, and the silicon adhesive sealant 13 is applied to one surface of the stainless material 12. Then, the aluminum material 11 and the stainless steel material 12 are concentrically overlapped,
When both are adhered by the method according to Example 1 and the aluminum material 11 is surface-treated, the material 1e as shown in FIG. 23 is obtained.
Is obtained.

If the material 1e as described above is formed by pressing or the like, a cooking pot 20 as shown in FIG. 21 can be manufactured. According to the present embodiment, the stainless material 12 forming the outer surface side material covers only the bottom portion and part of the side wall of the aluminum material 11 forming the inner surface side material, so that the usage amount of the stainless material 12 is reduced. Moreover, the weight of the cooking pot 20 can be reduced.

By the way, in such a cooking pot 20, since the step portion 26 is formed between the side wall of the aluminum material 11 which is the inner surface side material and the upper end portion of the stainless steel material 12 which is the outer surface side material, Not only is it unsightly, but it is also inconvenient for cleaning.

Therefore, as shown in FIG. 24 (a), the outer periphery of the upper end of the stainless material 12 is formed into a gentle slope 26a to eliminate the step 26, or as shown in FIG. 24 (b). The side wall of the aluminum material 11 has a small diameter corresponding to the side wall of the stainless material 11, and a step portion 27 is formed at the boundary, and the upper end portion of the stainless material 12 is brought into contact with the step portion 27 to flatten the outer peripheral surface. It may be formed. Further, as shown in FIG. 24 (c), an annular protrusion 28 is provided on the outer periphery of the side wall of the aluminum material 11 at a position corresponding to the upper end of the stainless material 11, and the upper surface of the stainless material 11 contacts the lower surface thereof. Alternatively, as shown in FIG. 24 (d), the aluminum material 1 is formed to have a thick wall and the stainless steel material 1 is formed.
Various measures can be taken, such as forming a thin wall 29 with the outer periphery cut off from the position corresponding to the upper end of 1 and fitting the stainless material 12 to this thin wall.

Example 9 In each of the above examples, the aluminum material 11 as the inner surface side material and the stainless steel material 12 as the outer surface side material were used.
The case where the materials 1 to 1e are manufactured by adhering with the silicon adhesive sealant 13 and the materials 1 to 1e are molded by pressing or the like to manufacture the cooking pot 20 is shown. A cooking pot is manufactured by a method different from the example.

FIG. 25 shows the manufacturing method of this embodiment. First, the inner pot 31 shown in FIG. 25 (a) is formed from the aluminum material 11 which is the inner material by press working and the like. Surface treatment is applied to the inner surface. Next, the stainless steel material 12 as the outer surface side material is subjected to press working or the like.
Thus, the outer surface side pot 32 as shown in FIG. 25 (b) whose inner diameter is substantially equal to the outer diameter of the inner surface side pot 31 is formed, and the silicone adhesive sealant 1 is formed on the inner surface and the upper surface of the flange 12a.
Apply 3. The silicone adhesive sealant 13 may be applied to the outer surface of the inner pot 31 and the lower surface of the flange 11a. Instead of the silicone adhesive sealant 13,
You may apply the silicone oil compound mentioned later (Example 15).

Then, the inner pot 31 is press-fitted into the outer pot 32 so as to be integrally joined and then naturally dried.
The cooking pot 20 as shown in (c) can be manufactured. The flange portion 21 may be formed by bending and fixing the flange 11a of the aluminum material 11 as shown in FIG. 25 (c), or as shown in FIG. Flange 11a,
11b may remain substantially horizontal.

Embodiment 10 FIG. 26 shows another embodiment of the method for manufacturing a cooking pot. This embodiment is almost the same as the above-mentioned embodiment 9, except that the outer pot 3
2a is formed shallowly as shown in FIG.
The cooking pan 20 as shown in (c) is manufactured. Also in this embodiment, between the side wall of the inner pot 31 and the upper end of the outer pot 32a can be formed in various shapes as described in FIG.

Embodiment 11 A method for manufacturing a cooking pot by separately molding the inner pot and the outer pot and press-fitting them to each other according to the above Examples 9 and 10 has been described. The manufacturing method of the pan is not limited to the above-mentioned embodiment, and the following cooking pan can be manufactured. That is, the silicone adhesive sealant 13 or the silicone oil compound is applied to the outer surface of the inner pot 31 or the bottom of the inner pot of the outer pot 32 or the bottom of the bottom and the side wall, and the inner pot 31 is press-fitted into the outer pot 32. For example, the cooking pot 20 as shown in FIG. 8 or 9 can be manufactured.

Example 12 In addition, the silicone adhesive sealant 13 is provided on the outer surface of the inner pot 31 or on the inner surface of the outer pot 32 facing the electromagnetic induction coil 24 installed below the cooking pot to be manufactured or in the vicinity thereof.
Or apply silicone oil compound and cook the inner pot 3
If 1 is press-fitted into the outer pot 32, a cooking pot 20 as shown in FIG. 11 can be manufactured.

Example 13 A hole 16 is provided in the bottom portion of the outer pot 32, and the recon adhesive sealant 13 is formed on the inner surface excluding the hole 16 or the bottom portion excluding the hole 16 or the bottom portion excluding the hole and the inner portion of the side wall lower portion. By applying the silicone oil compound and press-fitting the inner pot 31 into the outer pot 32, the cooking pot 20 as shown in FIGS. 13, 16 and 17 can be manufactured.

Embodiment 14 A hole 16 is provided at the bottom of the outer pot 32, and a plurality of small holes 17 are provided at a position not facing the electromagnetic induction coil 24 at the bottom.
Are provided, and the silicone adhesive sealant 13 or the silicone oil compound is applied to the inner surface excluding the holes 16 and the small holes 17, or the bottom excluding the holes and the small holes or the bottom excluding the holes 16 and the small holes and the inner surface of the lower side wall, and the inner surface side pot 31 The outer pot 3
By press-fitting into the cooking pot 2, the cooking pot 20 as shown in FIG. 19 can be manufactured.

Example 15 FIG. 27 is a schematic view of a cooking pot manufactured by a manufacturing method different from those of the above-described respective examples. To manufacture this cooking pot, plate-shaped aluminum material 11 and plate-shaped stainless steel material 1
2 is cut into, for example, a disk shape, and as shown in FIG. 28A, a paste-like silicon oil having excellent heat resistance and high thermal conductivity is formed on one surface of the stainless material 12 (or the aluminum material 11). Apply compound 18. Then, the both are superposed and temporarily bonded (since this silicone oil compound 18 is not an adhesive, the aluminum material 11 and the stainless steel material 12 adhere to each other due to their viscosity), and the aluminum material 11 is surface-treated 14 Give.

The manufacturing method of the material 2 as described above will be described in more detail as follows. For example, a plate-shaped aluminum material 11 having a thickness of 1.3 mm, which is an inner surface side material, and a plate-shaped stainless material 12 having a thickness of 0.5 mm, which is an outer surface side material.
Is cut into a shape required for manufacturing a cooking pot, and a paste-like silicone oil compound 18 (for example, on one surface of the stainless material 12 (or aluminum material 11))
TSK5303 sold by Toshiba Silicone Co., Ltd .... Thermal conductivity 2 × 10 ⁻³ W / m · K) is applied to a thickness of, for example, 0.2 mm by roll coating or brush coating.

Then, the aluminum material 11 and the stainless steel material 12 are superposed on each other with the coated surface facing inward, and temporarily bonded by pressurizing at a pressure of, for example, about 1 kg / cm ^{2 at} room temperature. If the surface treatment is applied, the material 2 as shown in FIG. In this case, as described above, the silicone oil compound 18 is not the adhesive but the aluminum material 11 and the stainless steel material 1.
It is for filling the gap between the two, and the aluminum material 11 and the stainless steel material 12 are not bonded even when pressure is applied, and the silicone oil compound 18 does not solidify, so both of them are adhesive. Temporarily bonded so that it does not separate. However, by applying pressure, the silicone oil compound 18 can be stabilized between the aluminum material 11 and the stainless material 12, and the air layer can be eliminated.

Next, the raw material 2 produced as described above is formed by pressing or the like to produce a cooking pot 20 as shown in FIG. In this case, since the material 2 has almost no variation in plate thickness (according to the results of the trial manufacture according to the above-described embodiment, the variation in plate thickness was 2.0 mm ± 0.1 mm), press with the same size die. The cooking pot 20 can be manufactured by processing or the like. In addition, in this embodiment, since the aluminum material which is the inner surface side material and the stainless steel material 12 which is the outer surface side material are not adhered, the flange portion 21 of the cooking pot 20 is bent by bending the aluminum material 11. It is necessary to fix it. Also in this embodiment, the silicone oil compound 18 is kept in a fluid state between the inner surface side material and the outer surface side material even after the cooking pot 20 is completed.

Example 16 In Example 12, a silicone oil compound 18 having a high thermal conductivity is applied to the surface of the stainless material 12 (or aluminum material 11) to form between the inner surface side material and the outer surface side material. Although the gap is filled, the silicon oil compound 18 is further provided with a material having a hardness that is substantially equal to or lower than that of the aluminum material 11 and has a high thermal conductivity, such as aluminum, copper, nickel, manganese, or magnesium oxide. Powder may be mixed. Thereby, the heat generated in the stainless steel material 12 can be more efficiently conducted to the aluminum material 11.

Example 17 Silicon is formed on one surface of the aluminum material 11 which is the inner surface side material or the stainless steel material 12 which is the outer surface side material, on the bottom portion or the bottom portion and the lower portion of the side wall of the electromagnetic cooking pot to be manufactured. If the oil compound 18 is applied, the material 2 is manufactured by the method according to Example 15, and this material 2 is formed by press working or the like, the cooking pot 2 as shown in FIGS.
0 can be produced.

Example 18 A silicone oil compound 18 was applied to a portion of one surface of the aluminum material 11 or the stainless material 12 facing the electromagnetic induction coil to be manufactured or in the vicinity thereof, and a material was prepared by the method according to the embodiment 15. 2 is manufactured and the raw material 2 is formed by press working or the like, the cooking pan 20 as shown in FIG. 11 can be manufactured.

Example 19 A hole 16 was formed in the stainless material 12 as the outer surface side material in a portion corresponding to the bottom of the cooking pot.
Except one side, or the bottom or hole 16 excluding the hole 16
Except for the bottom and one of the lower parts of the side walls, the silicone oil compound 18 is applied to produce the raw material 2 by the method according to Example 15, and the raw material 2 is molded by pressing or the like to produce the cooking pot 20. To do. As a result, FIG. 13 and FIG.
4, cooking pot 20 as shown in the embodiment of FIG. 16 or FIG.
Can be manufactured.

Example 20 A hole 16 is provided in the substantially central portion of the stainless steel material 12, and a plurality of small holes 17 are provided at positions not facing the electromagnetic induction coil 24 installed below the cooking pot to be manufactured.
One surface except 6 and hole 17, or hole 16 and small hole 17
Except for the bottom or one of the bottoms except for the holes 16 and the small holes 17 and the side wall corresponding to the side wall, the silicone oil compound 18 is applied to produce the material 2 by the method according to Example 15, and the material 2 is pressed. If molded by processing etc.,
The cooking pot 20 as shown in FIG. 19 can be manufactured.

Embodiment 21 FIG. 29 is a schematic view of a cooking pot manufactured by a manufacturing method different from those of the above-mentioned respective embodiments. In order to manufacture the cooking pot 20, the plate-shaped aluminum material 11 that is the inner surface side material and the plate-shaped stainless material 12 that is the outer surface side material are cut into, for example, a disc shape, and also have excellent heat resistance, and Similarly, a double-sided adhesive tape having high thermal conductivity is cut into a disk shape, and
The aluminum material 1 and the stainless steel material 12 are arranged on both sides of the double-sided adhesive tape 19 as shown in (a), and they are superposed and temporarily adhered (since this double-sided adhesive tape 19 is not an adhesive, the aluminum material 11 and the stainless steel material 11 are used. 12 is temporarily bonded so that it does not separate). Then, the aluminum material 11 is subjected to a surface treatment to manufacture the material 3 as shown in FIG.

The manufacturing method of the material 3 as described above will be described in more detail as follows. For example, a plate-shaped aluminum material 11 having a thickness of 1.3 mm which is an inner surface side material, a plate-shaped stainless material 12 having a thickness of 0.5 mm which is an outer surface side material, and a double-sided adhesive tape 19 (having a thickness of 0.2 mm) ( For example, the heat conductive double-sided adhesive tape 3 sold by ThreeBond Co., Ltd.
316) is cut into a shape (for example, a disk shape) necessary for manufacturing a cooking pot.

Then, with the double-sided adhesive tape 19 at the center, the aluminum material 11 and the stainless material 12 are arranged on both sides thereof, and at room temperature, they are temporarily adhered by applying a pressure of, for example, about 1 kg / cm ^2. , Aluminum material 11
A surface treatment 14 is applied to the surface of the material to manufacture the material 3 as shown in FIG. In this case, the double-sided adhesive tape 19 is for receiving a gap between the aluminum material 11 and the stainless steel material 13, and the aluminum material 11 and the stainless steel material 12 are temporarily adhered by the double-sided adhesive tape 19 even if pressure is applied. Not just a strong bond. However, by applying pressure, the double-sided adhesive tape 19 is stabilized between the aluminum material 11 and the stainless material 12, and the air layer can be eliminated.

Next, the above materials are molded by pressing or the like to manufacture a cooking pot 20 as shown in FIG. In this case, since there is almost no variation in the plate thickness of the material 3 (according to the results of the trial manufacture according to the above-described embodiment, the variation in the plate thickness was 2.0 mm ± 0.1 mm), the molds having the same dimensions were used. The cooking pot 20 can be manufactured.
Also in this embodiment, since the aluminum material 11 which is the inner surface side material and the stainless steel material 12 which is the outer surface side material are not firmly adhered, the flange portion 21 of the cooking pot 20 is
It is necessary to fix the aluminum material 11 by bending it.

Example 22 In this example, a double-sided adhesive tape 19 having a size corresponding to the bottom of the cooking pot to be manufactured or the range between the bottom and the lower part of the side wall is sandwiched between the aluminum material 11 and the stainless steel material 2. The raw material 3 is manufactured in accordance with Example 21 and molded by press working or the like to manufacture a cooking pot. As a result, the cooking pot 20 as shown in the embodiments of FIGS. 8 and 9 can be manufactured.

Embodiment 23 Between the aluminum material 11 and the stainless steel material 12, in the range of the electromagnetic induction coil 24 installed below the cooking pot, a portion not facing the electromagnetic induction coil 24 is provided along the electromagnetic induction coil 24. A material 3 is manufactured by sandwiching the cut double-sided adhesive tape 19 according to Example 21 or 22, and the material 3 is molded by pressing or the like to manufacture a cooking pot 20 as shown in the embodiment of FIG.

Example 24 A hole 16 is provided in a portion corresponding to the bottom of a cooking pot for producing the stainless steel material 12 as the outer surface side material, and a hole is provided between the aluminum material 11 and the stainless steel material 12 as the inner surface side material. 16, a double-sided adhesive tape having a hole at a position aligned with 16 and being substantially equal to or smaller than the stainless material is used to manufacture the material 3 according to Example 21 or 22, and the material 3 is formed by pressing or the like. Then, FIG. 13, FIG. 16 or FIG.
The cooking pot 20 as shown in FIG.

Twenty-fifth Embodiment A hole 16 is provided substantially in the center of a stainless steel material which is an outer surface side material, and a plurality of small holes 17 are provided at positions not facing the electromagnetic induction coil 24 installed below a cooking pot to be manufactured. Between the stainless steel material 12 and the aluminum material 11 which is the inner surface side material, there are holes and small holes at positions matching the holes 16 and the small holes 17 provided in the stainless steel material 12, and the sizes are almost the same as those of the stainless steel material 12. A double-sided adhesive tape 19 smaller than this is sandwiched, and the raw material 3 is manufactured according to Example 21 or 22, and this raw material 3 is molded by press working or the like to manufacture a cooking pot 20 as shown in the embodiment of FIG. .

In the above embodiments, the cooking pan for cooking rice and the method for manufacturing the same were mainly described, but other cooking pans can be manufactured by using the same material and the same method, and the shape thereof can be appropriately changed. it can. Further, the case where the inner surface side material and the outer surface side material are joined or temporarily bonded, or the inner surface side pot is molded and then the surface treatment is performed on the inner surface side material or the surface of the inner side pot, the surface treatment (for example, Joining or temporarily adhering the outer surface side material to the inner surface side material that has been subjected to surface treatment with fluororesin),
Alternatively, the inner pot may be molded. Further, although the case where the aluminum material is used as the inner surface side material and the stainless material is used as the outer surface side material is shown, the present invention can be implemented by other materials. Also, the case where the material or the cooking pot is manufactured by cutting the inner surface side material, the outer surface side material, etc. into a disc shape is shown, but the shapes of these materials should be changed appropriately according to the shape of the cooking pot to be manufactured. You can

[0088]

The effects of the present invention are as follows. In addition,
In the following description, the effect of each claim will be described by attaching a number corresponding to the claim number. (1) In the method for manufacturing a cooking pan material according to the present invention, a silicone adhesive sheet agent is applied to either the inner surface side material or the outer surface side material having a shape required for manufacturing the cooking pan to form an inner surface side material. Since the outer surface side materials are adhered and then these are pressed at room temperature to be integrally joined, it is possible to obtain an inexpensive material which is easy to manufacture.

Further, since the material manufactured by the above has almost no variation in plate thickness, it is not necessary to use several kinds of molds such as the conventional glad material at the time of molding.
The work efficiency can be greatly improved because the mold can be surely molded with the different kinds of molds. Furthermore, since all the materials are manufactured at room temperature, not only the equipment is simplified, but also the constituent materials, especially stainless steel, do not deteriorate or discolor, and wrinkles do not occur on the outer surface during molding. , Can produce high quality cooking pot with good yield. And from these things, cost can be reduced significantly.

(2) Since the cooking pot is manufactured by molding the material of (1) above by pressing or the like, it is necessary to manufacture a high-quality cooking pot with one type of mold in manufacturing with high yield. Therefore, the cost can be reduced.

(3) According to the manufacturing method of (1) above, a silicone adhesive sealant is applied to the bottom portion of the cooking pot of either the inner surface side material or the outer surface side material or the range corresponding to the bottom side wall lower portion. Since the material is manufactured using this material and the cooking pot is manufactured using this material, the heat generated in the outer surface side material can be efficiently transferred to the inner surface side material even though the amount of silicone adhesive sealant applied is reduced. Can be communicated. Also,
An air layer is formed on a part of the side wall, and this air layer can prevent heat dissipation from the inner surface side material and enhance the heat retention effect.

(4) A silicone adhesive sealant is applied to a position facing the electromagnetic induction coil installed below the cooking pot of either the inner surface side material or the outer surface side material or in the vicinity thereof, and the above (1) is applied. Since the material is manufactured according to the manufacturing method of 1. and the cooking pot is manufactured using this material, the same effect as (3) above can be obtained.

(5) A hole is formed in a portion corresponding to the bottom of the electromagnetic cooking pot of the outer surface side material, and silicon is adhered to the entire surface excluding this hole, the bottom excluding the hole, or the bottom excluding the hole and the lower side wall. A sealant was applied to produce a material according to the production method of (1) above, and a cooking pot was produced using this material. Therefore, the inner surface material such as an aluminum material is exposed in the hole. are doing. Therefore, it is possible to accurately measure the temperature of the cooking pot by bringing a temperature sensor into contact with the inner surface material from this hole, and this hole allows the temperature between the inner surface material and the outer surface material to be improved during molding. The air present in the can be discharged.

(6) A hole is provided in the portion corresponding to the bottom of the cooking pot of the outer surface side material, and a plurality of small holes are provided in a position not facing the electromagnetic induction coil installed below the cooking pot.
A silicon adhesive sealant is applied to the entire surface excluding holes and small holes, the bottom excluding holes and small holes, or the bottom excluding holes and small holes and the area corresponding to the bottom of the side wall, and the material is manufactured according to the manufacturing method of (1) above. Since the cooking pot is manufactured using this material, in addition to the effect of (5) above, the air existing between the inner surface side material and the outer surface side material can be discharged through the small holes. The air discharge effect can be further enhanced.

(7) The outer surface side material is formed smaller than the inner surface side material, a silicon adhesive sealant is applied to the entire surface of the outer side material, and a material is manufactured according to the manufacturing method of (1) above. Since the cooking pot is manufactured, it is possible to reduce the amount of the outer material such as stainless steel used and the weight of the cooking pot itself.

(8) Further, another material of the cooking pot according to the present invention is the one in which the inner surface side material or the outer side material having a shape required for manufacturing the cooking pot is coated with silicone oil compound, Since the side material and the outer surface side material are overlaid and pressed at room temperature for temporary adhesion, there is almost no variation in plate thickness, and the same effect as in the case of the above (1) can be obtained. Since the silicone oil compound is not an adhesive, the material on the inner surface and the material on the outer surface are not bonded, but it is possible to eliminate the air layer in the portion corresponding to the electromagnetic induction coil by filling between them. The heat transfer efficiency from the outer surface side material to the inner surface side material can be improved.

(9) Since a powder material having a high thermal conductivity and a hardness equal to or lower than that of the inner surface side material is mixed in the silicone oil compound of the above (8), the outer surface side material is changed to the inner surface side material. The efficiency of heat transfer to the can be further increased.

(10) Since the cooking pot is manufactured by pressing the material of (8) or (9) above,
It is possible to obtain almost the same effect as in the case of (2) above.

(11) Applying a silicone oil compound to the bottom of the cooking pot of the inner material or the outer material or a range corresponding to the bottom and the lower portion of the side wall, and applying the material according to the manufacturing method of (8) or (9) above. Since the cooking pot is manufactured using this material, it is possible to obtain substantially the same effect as in the case of (3) above.

(12) Manufacturing of the above (8) or (9) by applying a silicone oil compound at or near a position facing the electromagnetic induction coil installed below the cooking pot of the inner surface side material or the outer surface side material. Manufacture materials according to the method,
Since the cooking pot is manufactured from this material, it is possible to obtain substantially the same effect as in the case of the above (4).

(13) A hole is provided in a portion corresponding to the bottom of the electromagnetic cooking pot of the outer surface side material, and a silicone oil compound is provided on the entire surface excluding this hole, the bottom excluding the hole, or the bottom excluding the hole and the lower portion of the side wall. Since the material is applied and manufactured according to the manufacturing method of the above (8) or (9), and the cooking pot is manufactured from this material, almost the same effect as the case of the above (5) can be obtained. You can

(14) A hole is provided in the portion corresponding to the bottom of the cooking pot of the outer surface side material, and a plurality of small holes are provided at positions not facing the electromagnetic induction coil installed below the cooking pot. Except for the whole surface or the bottom excluding the holes and small holes or the bottom excluding the holes and small holes and the area corresponding to the lower part of the side wall, the silicon oil compound is applied to manufacture the material according to the manufacturing method of the above (8) or (9), Since the cooking pot is manufactured from this material, it is possible to obtain substantially the same effect as in the case of the above (6).

(15) Still another material of the cooking pot according to the present invention has a high thermal conductivity between the inner surface side material and the outer surface side material formed in a shape required for manufacturing the cooking pot. Since the double-sided pressure-sensitive adhesive tape is sandwiched and pressure is applied at room temperature for temporary adhesion, the production is particularly simple, and the same effect as in the case of the above (8) can be obtained.

(16) Since the material of (15) above is molded by pressing or the like to produce a cooking pot,
It is possible to obtain almost the same effect as in the case of (2) above.

(17) A double-sided adhesive tape having a size corresponding to the bottom of the cooking pot or the bottom and the lower part of the side wall is sandwiched between the material on the inner surface and the material on the outer surface, and the material is produced according to the production method of the above (15). Since the cooking pot is manufactured using this material, it is possible to obtain substantially the same effect as in the case of the above (3).

(18) A double-sided adhesive tape is cut between the material on the inner surface and the material on the outer surface in a range of the electromagnetic induction coil installed below the cooking pan, and a portion not facing the electromagnetic induction coil is cut off. Since the material is manufactured according to the manufacturing method of the above (15) and the cooking pot is manufactured from this material, it is possible to obtain substantially the same effect as in the case of the above (4).

(19) A hole is provided in a portion of the outer surface side material corresponding to the bottom portion of the cooking pot, and a hole is provided between the outer surface side material and the inner surface side material at a position aligned with the hole, and the outer surface side material is almost the same as the outer surface side material. A double-sided adhesive tape of equal size or smaller is sandwiched between the materials to produce the material according to the production method of (15), and the cooking pot is produced from this material.
It is possible to obtain almost the same effect as in the case of.

(20) A hole is provided substantially in the center of the outer surface side material, and a plurality of small holes are provided at positions not facing the electromagnetic induction coil installed below the cooking pot, so that the outer surface side material and the inner surface side material are separated from each other. A double-sided pressure-sensitive adhesive tape having a hole and a small hole in a position aligned with the hole and the small hole and having a size substantially equal to or smaller than that of the outer surface side material is sandwiched therebetween to manufacture the material according to the manufacturing method of (15) above, Since the cooking pot is manufactured from this material, it is possible to obtain substantially the same effect as in the case of the above (6).

(21) In another method for producing a cooking pot according to the present invention, the inner pot is formed from the inner material, and the outer pot is formed from the outer material, and the outer pot or outer face of the inner pot is formed. Since we applied silicone adhesive sealant or silicone oil compound to the inner surface of the pot to press the inner pot to the outer pot, there is no need to manufacture the material in advance, so inventory control and process control are easy, Manufacturing is also easy.

(22) Since the outer surface side pan of (21) above is formed shallower than the inner surface side pan, it is possible to obtain substantially the same effect as (7) and the effect of (21).

(23) Since the outer surface side material of the above (7) or (22) or the upper end portion of the outer surface side pan and the inner surface side material or the side wall outer surface of the inner surface side pan are formed to be substantially flat, the appearance is good. Etc. are also easy.

(24) In manufacturing the cooking pot by the manufacturing method of (21) or (22), a silicone adhesive sealant or a condensate is applied to the outer surface of the inner pan or the bottom of the inner pan or the bottom and lower side walls. Since the oil compound is applied, the air between the inner pot and the outer pot is removed, and the heat of the outer pot is efficiently transferred to the inner pot via the silicone adhesive sealant or silicone oil compound. can do.

(25) Since the silicone adhesive sealant or silicone oil compound is applied to the inner side pot or the outer side pot at a position facing the electromagnetic induction coil installed below the cooking pot or in the vicinity thereof, Even though the amount of silicone adhesive sealant or silicone oil compound applied is reduced, the heat of the outer pot can be efficiently transferred to the inner pot.

(26) A hole is provided in the bottom of the outer pot, and a silicone adhesive sealant or silicone oil compound is applied to the inner surface excluding this hole, the bottom excluding the hole, or the bottom excluding the hole and the inner surface of the lower side wall. Since the above is adopted, it is possible to obtain an effect substantially similar to the above (5).

(27) A hole is provided at the bottom of the outer pan, and a plurality of small holes are provided at positions not facing the electromagnetic induction coil installed below the cooking pan. Since the silicon adhesive sealant or the silicone oil compound is applied to the bottoms or the bottoms except the holes and the bottoms excluding the small holes and the inner surfaces of the lower side walls, the same effect as the above (6) can be obtained.

(28) The upper end portion of each cooking pot manufactured as described above is bent outward substantially horizontally to form a flange portion, and the flange of the inner surface side material forming the flange portion is bent to form the outer surface side material. Since I fixed the flange of
The mechanical strength of the cooking pot can be enhanced, and the inner surface side material and the outer surface side material are not separated from the flange portion even after long-term use.

(29) Since the sealant is applied or filled between the material on the inner surface and the material on the outer surface of the flange portion in (28), or the packing is interposed, the material on the inner surface side is inserted from the flange portion. There is no risk of moisture or air penetrating between the outer surface side material and the outer surface side material, so that the heat of the outer surface side material can be efficiently transferred to the inner surface side material over a long period of time.

(30) Since the cooking pot manufactured by each of the above manufacturing methods can be obtained, the above effects can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a method of manufacturing a material according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a method for manufacturing a material according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a method for manufacturing a material according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a method of manufacturing a cooking pot using the material of the first embodiment according to the second embodiment of the present invention.

FIG. 5 is an explanatory diagram of a method for manufacturing a cooking pot using the material of the first embodiment according to the second embodiment of the present invention.

FIG. 6 is an explanatory view showing a method of manufacturing the flange portion of FIG.

FIG. 7 is an explanatory view showing a method of manufacturing the flange portion of FIG.

FIG. 8 is an explanatory diagram of a method for manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the third embodiment of the present invention.

FIG. 9 is an explanatory diagram of a method of manufacturing a cooking pot using a material according to the material of the first embodiment according to the third embodiment of the present invention.

FIG. 10 is an explanatory diagram of a method of manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the third embodiment of the present invention.

FIG. 11 is an explanatory diagram of a method of manufacturing a cooking pot using a material conforming to the material of the first embodiment according to the fourth embodiment of the present invention.

FIG. 12 is an explanatory diagram of a method of manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the fourth embodiment of the present invention.

FIG. 13 is an explanatory diagram of a method of manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the fifth embodiment of the present invention.

FIG. 14 is an explanatory diagram of a method of manufacturing a cooking pot using a material similar to the material of the first embodiment according to the fifth embodiment of the present invention.

FIG. 15 is an explanatory diagram of a method of manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the fifth embodiment of the present invention.

FIG. 16 is an explanatory diagram of a method of manufacturing a cooking pot of a material according to the material of the first embodiment according to the sixth embodiment of the present invention.

FIG. 17 is an explanatory diagram of a method of manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the sixth embodiment of the present invention.

FIG. 18 is an explanatory diagram of a method of manufacturing a cooking pot made of a material according to the material of the first embodiment according to the sixth embodiment of the present invention.

FIG. 19 is an explanatory diagram of a method of manufacturing a cooking pot made of a material conforming to the material of the first embodiment according to the seventh embodiment of the present invention.

FIG. 20 is an explanatory diagram of a method of manufacturing a cooking pot using a material conforming to the material of the first embodiment according to the seventh embodiment of the present invention.

FIG. 21 is an explanatory diagram of a method of manufacturing a cooking pot using a material similar to the material of the first embodiment according to the eighth embodiment of the present invention.

FIG. 22 is an explanatory diagram of a method for manufacturing a cooking pot using a material conforming to the material of the first embodiment according to the eighth embodiment of the present invention.

FIG. 23 is an explanatory diagram of a method of manufacturing a cooking pot using a material similar to the material of the first embodiment according to the eighth embodiment of the present invention.

FIG. 24 is an explanatory diagram showing a treatment example of the upper end portion of the outer surface side material of the eighth embodiment.

FIG. 25 is an explanatory diagram of the method for manufacturing the cooking pot according to the ninth embodiment of the present invention.

FIG. 26 is an explanatory diagram of the method for manufacturing the cooking pot according to the tenth embodiment of the present invention.

FIG. 27 is an explanatory diagram of the method for manufacturing the material according to the fifteenth embodiment of the present invention.

FIG. 28 is an explanatory diagram of the method for manufacturing the material according to the fifteenth embodiment of the present invention.

FIG. 29 is an explanatory diagram of the method for manufacturing the material according to the twenty-first embodiment of the present invention.

FIG. 30 is an explanatory diagram of the method for manufacturing the material according to the twenty-first embodiment of the present invention.

[Explanation of symbols]

1,2,3 Material, 11 Aluminum material, 12 Stainless steel material, 13 Silicone adhesive sealant, 14 Surface treatment, 16 holes, 17 small holes, 18 Silicone oil compound, 19 Double-sided adhesive tape, 20 Cooking pot, 21
Flange, 22 Sealant, 23 Packing, 24
Electromagnetic induction coil, 25 convex part, 26 step part, 31 inner pot, 32 outer pot.

Front page continuation (72) Eiji Kogure, Eiji Kogure 1728 Omaeda 1 Omaeda, Hanazono-cho, Saitama Prefecture Mitsubishi Electric Home Equipment Co., Ltd. Equipment Co., Ltd. (72) Inventor Masao Shimoda 1728 Omaeda, Omaeda, Hanazono-cho, Osato-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd.

Claims (30)

[Claims] 1. A silicone adhesive sealant is applied to either the inner surface side material or the outer surface side material having a shape required to manufacture an electromagnetic cooking pot, and the inner surface side material and the outer surface side material are adhered to each other. A method for producing a raw material for an electromagnetic cooking pot, which comprises pressurizing these at room temperature and joining them together. 2. A method for manufacturing an electromagnetic cooking pot, which comprises molding the raw material according to claim 1. 3. The manufacturing method according to claim 1, wherein a silicone adhesive sealant is applied to the bottom portion of the electromagnetic cooking pot of either the inner surface side material or the outer surface side material or a range corresponding to the bottom side wall lower portion. A method for manufacturing an electromagnetic cooking pot, comprising the steps of: 4. A silicone adhesive sealant is applied to a position facing an electromagnetic induction coil installed below an electromagnetic cooking pot of either the inner surface side material or the outer surface side material or in the vicinity thereof. A method for producing an electromagnetic cooking pot, which comprises producing a raw material according to the above-mentioned production method, and shaping the raw material. 5. A hole corresponding to the bottom of the electromagnetic cooking pot of the outer surface side material is provided with a hole, and the entire surface excluding the hole, the bottom excluding the hole, or the bottom excluding the hole and the side wall lower part. A method for manufacturing an electromagnetic cooking pot, comprising: applying a silicone adhesive sealant to a material to manufacture the material according to the method of claim 1, and molding the material. 6. A hole is provided in a portion corresponding to the bottom of the electromagnetic cooking pan of the outer surface side material, and a plurality of small holes are provided at a position not facing the electromagnetic induction coil installed below the electromagnetic cooking pan, The silicone adhesive sealant is applied to the entire surface excluding the holes and the small holes, the bottom excluding the holes and the small holes, or the range excluding the holes and the small holes and the bottom and the lower part of the side wall. A method for producing an electromagnetic cooking pot, which comprises producing a raw material and molding the raw material. 7. An outer surface material is formed smaller than an inner surface material, and a silicone adhesive sealant is applied to the entire surface of the outer surface material to produce a material according to the production method of claim 1, and the material is molded. A method for manufacturing an electromagnetic cooking pot, characterized by being processed. 8. A silicone oil compound is applied to either the inner surface side material or the outer surface side material having a shape required for manufacturing an electromagnetic cooking pot, and the inner surface side material and the outer surface side material are overlaid at room temperature. A method of manufacturing a raw material for an electromagnetic cooking pot, which comprises pressurizing and temporarily adhering. 9. The production of a raw material for an electromagnetic cooking pot according to claim 8, wherein the silicone oil compound is mixed with a powder material having a high thermal conductivity and a hardness equal to or lower than that of the inner surface material. Method. 10. A method for producing an electromagnetic cooking pot, which comprises forming the raw material according to claim 8 or 9. 11. The silicone oil compound is applied to the bottom portion or the range corresponding to the bottom portion and the lower portion of the side wall of the electromagnetic cooking pot of either the inner surface side material or the outer surface side material.
Alternatively, a method of manufacturing an electromagnetic cooking pot, which comprises manufacturing a material according to the manufacturing method of 9 and molding the material. 12. A silicone oil compound is applied to a position facing an electromagnetic induction coil installed below an electromagnetic cooking pot of either the inner surface side material or the outer surface side material, or in the vicinity thereof. A method for producing an electromagnetic cooking pot, which comprises producing a raw material according to the above-mentioned production method, and shaping the raw material. 13. A hole corresponding to a bottom portion of an electromagnetic cooking pot of an outer surface side material, and a whole surface excluding the hole, the bottom portion excluding the hole, or the bottom portion excluding the hole and a lower portion of a side wall. A method for producing a pan for electromagnetic cooking, which comprises applying a silicone oil compound to a raw material to produce a raw material according to the production method of claim 8 and molding the raw material. 14. A hole is provided in a portion corresponding to a bottom portion of the electromagnetic cooking pot of the outer surface side material, and a plurality of small holes is provided at a position not facing the electromagnetic induction coil installed below the electromagnetic cooking pot, The silicone oil compound is applied to the entire surface excluding the holes and the small holes, the bottom excluding the holes and the small holes, or the range corresponding to the bottom and the lower side wall except the holes and the small holes, according to the manufacturing method of claim 8 or 9. A method for manufacturing an electromagnetic cooking pot, comprising the steps of: 15. A double-sided pressure-sensitive adhesive tape having a high thermal conductivity is sandwiched between an inner surface side material and an outer surface side material having a shape required for manufacturing an electromagnetic cooking pot, and pressure-bonded at room temperature to temporarily bond them. A method of manufacturing a material for a characteristic electromagnetic cooking pot. 16. A method of manufacturing an electromagnetic cooking pot, which comprises molding the raw material according to claim 15. 17. The material according to the manufacturing method of claim 15, wherein a double-sided adhesive tape having a size corresponding to the bottom of the electromagnetic cooking pot or the bottom and the lower part of the side wall is sandwiched between the inner surface side material and the outer surface side material. A method for producing an electromagnetic cooking pot, comprising: 18. A double-sided pressure-sensitive adhesive tape is sandwiched between an inner surface side material and an outer surface side material by cutting out a portion not facing the electromagnetic induction coil within a range of the electromagnetic induction coil installed below the electromagnetic cooking pan. 16. A method for manufacturing an electromagnetic cooking pot, comprising manufacturing a raw material according to the manufacturing method according to claim 15, and molding the raw material. 19. A hole is provided in a portion of an outer surface side material corresponding to a bottom portion of an electromagnetic cooking pan, and the outer surface has a hole between the outer surface side material and the inner surface side material at a position aligned with the hole. A method for producing an electromagnetic cooking pot, characterized in that a double-sided pressure-sensitive adhesive tape having a size substantially equal to or smaller than that of the side material is sandwiched between the materials to produce the raw material, and the raw material is molded. 20. A hole is provided substantially at the center of the outer surface side material, and a plurality of small holes are provided at positions not facing the electromagnetic induction coil installed below the electromagnetic cooking pot, and the outer surface side material and the inner surface side material are provided. 2. A double-sided adhesive tape having a hole and a small hole in a position aligned with the hole and the small hole and having a size substantially equal to or smaller than that of the outer surface side material is sandwiched between
A method for producing an electromagnetic cooking pot, which comprises producing a material according to the production method of 5, and molding the material. 21. An inner pot is formed from the inner material, an outer pot is formed from the outer material, and a silicone adhesive sealant or a silicone oil compound is formed on the outer surface of the inner pot or the inner surface of the outer pot. Is applied, and the inner-side pot is press-fitted into the outer-side pot, which is a method for producing an electromagnetic cooking pot. 22. The method for manufacturing an electromagnetic cooking pot according to claim 21, wherein the outer pot is formed shallower than the inner pot. 23. The method for producing an electromagnetic cooking pan according to claim 7, wherein the upper end of the outer pan and the outer wall of the inner pan are substantially flat. 24. The electromagnetic cooking according to claim 21 or 22, wherein a silicone adhesive sealant or silicone oil compound is applied to the outer surface of the inner pot or the bottom of the inner surface of the outer pot or the bottom and the lower portion of the side wall. How to make a pot. 25. A silicone adhesive sealant or a silicone oil compound is applied to a position facing the electromagnetic induction coil installed below the electromagnetic cooking pot of the inner pot or the outer pot, or in the vicinity thereof. The method for manufacturing an electromagnetic cooking pot according to claim 21 or 22. 26. A hole is provided in the bottom of the outer pot, and a silicone adhesive sealant or a silicone oil compound is applied to the inner surface excluding the hole, the bottom excluding the hole, or the bottom excluding the hole and the inner surface of the lower side wall. 22.
22. The method for manufacturing an electromagnetic cooking pot as described in 22. 27. A hole is provided at the bottom of the outer pot,
A plurality of small holes are provided at a position that does not face the electromagnetic induction coil installed below the electromagnetic cooking pot, the inner surface excluding the holes and the small holes, the bottom excluding the holes and the small holes, or the bottom excluding the holes and the small holes and the side wall lower part. The method for producing an electromagnetic cooking pot according to claim 21 or 22, wherein a silicone adhesive sealant or a silicone oil compound is applied to the inner surface of the. 28. The upper end of the electromagnetic cooking pan is bent substantially horizontally outward to form a flange portion, and the flange of the inner surface side material forming the flange portion is bent to fix the flange of the outer surface side material. Claims 2, 3, 4, characterized in that
5, 6, 10, 11, 12, 13, 14, 16, 17,
28. The method for producing a pan for electromagnetic cooking according to any one of 18, 19, 20, 21, 23, 24, 25, 26 or 27. 29. The method for producing an electromagnetic cooking pot according to claim 28, wherein a sealant is applied or filled between the material on the inner surface side and the material on the outer surface side of the flange portion, or a packing is interposed. . 30. Claims 2, 3, 4, 5, 6, 10, 1
1, 12, 13, 14, 16, 17, 18, 19, 2
0, 21, 23, 24, 25, 26, 27, 28 or 2
An electromagnetic cooking pot manufactured by any of 9.