JPH09276130A - Double metallic pan and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the temp. differences between the center and outer periphery of a pan when this pan is heated. SOLUTION: A base layer part 11 of the pan is formed of blanks, such as iron, nickel, cobalt, steel and iron and allays, having magnetic conductivity and further, blanks, such as copper, silver and gold, having high thermal conductivity are subjected to electric casting, etc., by which an inside layer part 12 is formed on the upper layer of this bottom layer part 11 and the double metallic pan 10 is constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double metal pan, and more particularly to a double metal pan used in an electromagnetic furnace.

[0002]

2. Description of the Related Art Conventionally, foodstuffs are fried on a gas stove. The gas stove was necessary because it was very easy to adjust the heating power. It is well known in recent years that the advent of electromagnetic furnaces has made cooking much easier. The electromagnetic furnace is extremely convenient for cooking simmered foods and pans in adjusting the heating power, but it is inconvenient when cooking stir-fried foods because the temperature of the pans becomes uneven.

[0003]

As mentioned above, cooking can be facilitated by using an electromagnetic furnace in recent years. However, since the current pan is made of iron or the like, it has a poor heat conductivity and causes a significant temperature difference between the central part and the outer peripheral part of the pan.

As shown in FIG. 4, the coil 1 is located at the center of the pot 2, for example, when the center of the pot 2 is 120 ° C,
The temperature at the outer periphery is about 60 ° C. Therefore, pot 2
Even if the central food is burnt, it is not yet fried in the outer periphery. In particular, such a phenomenon appears remarkably in large restaurants and large pots used for groups.

Further, it is extremely difficult to form the coil 1 up to the outer periphery of the pan, which causes a high cost. In addition, a pot with aluminum welded inside stainless steel is also offered. Since aluminum has high thermal conductivity, the temperature at the center of the pan is transmitted to the outer periphery, and the temperature difference between the central portion and the outer peripheral portion is reduced as much as possible. However, since the shrinkage rates of the aluminum and stainless steel are remarkably different from each other, the welded portion is peeled off by heating or cooling the pot for a long time, which is a cause of shortening the life of the pot.

Further, since the work of joining the aluminum and stainless steel is a difficult work at a high temperature and a high pressure, a lot of labor and time are required for the work of joining, which causes a cost increase. . Further, since the aluminum easily produces a toxic substance, there is a problem in safety.

[0007] Therefore, there arises a technical problem to be solved in order to easily conduct the high temperature in the center of the pot to the outer peripheral portion without shortening the life of the pot and without impairing the safety. The present invention aims to solve the problems.

[0008]

The present invention has been proposed in order to achieve the above-mentioned object, and iron, nickel,
Form the bottom layer of the pot with magnetically conductive materials such as cobalt, steel, alloys, etc., and further apply highly heat-conductive materials such as copper, silver, and gold to the upper layer of the bottom layer by performing electric casting, etc. A double metal pan, which is characterized by being installed, and
Material with high heat conductivity such as copper, silver, gold, etc. is infiltrated into the electric casting liquid to iron, nickel, cobalt,
A method for producing a double metal pan characterized by casting magnetically conductive materials such as steel and alloys, and silver, etc. on the surface of magnetically conductive materials such as iron, nickel, cobalt, steel and alloys. Double metal pan characterized by plating the metal of, and materials with magnetic conductivity such as iron, nickel, cobalt, steel, alloys and materials with high thermal conductivity such as copper, silver, gold, etc. Double metal pot characterized by having a structure with high pressure-sensitive adhesive and no stress (stress), and by bonding two flat plate metal with pressure-sensitive adhesive, or electric casting And a double metal pan characterized by being compressed and formed into a pan shape, and a double metal pan characterized by being formed by laminating multiple layers. is there.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. In the figure, 10 is a double metal pan, and as shown in FIG. 1, the double metal pan 10 is made of a highly magnetically conductive material such as iron, nickel, alloy, steel, stainless steel, and cobalt. Bottom layer part 11
Are formed. The bottom layer portion 11 is formed by a conventional pot manufacturing method.

Further, an inner layer portion is laminated on the upper layer of the bottom layer portion with a material having a high heat conductivity such as silver, copper and gold. And
A coil 13 is arranged at the bottom of the double metal pan 10. The coil 13 and the bottom layer portion 11 constitute the bottom portion of the double metal pan 10. When the double metal pan 10 is placed on the electromagnetic furnace, the bottom layer 11 absorbs the amount of heat of magnetic conductivity and supplies the amount of heat to the inner layer 12.

As shown in FIG. 2, when the temperature of the central portion of the double metal pan 10 placed in the electromagnetic furnace is 100 ° C, the temperature of the outer peripheral portion of the double metal pan 10 is 98 ° C. Therefore, the inner layer portion 12 smoothly conducts the amount of heat supplied to the inner layer portion 12 to the outer peripheral portion.

Further, as shown in FIG. 3, the double metal pan 1
When vegetables and the like were put in 0 and fried, the temperature was 65 ° C. in the central part and about 68 ° C. in the outer peripheral part.

Therefore, it is possible to delay the heat absorption of the food by reducing the temperature difference between the center and the outer periphery of the conventional pan as much as possible, so that the disadvantage of the conventional temperature difference can be prevented. You can

In the double metal pan 10, first, two flat plates are formed, the flat plates are heated and pressed, and at the same time, two pressure wheels are passed through to press and adhere to form one plate. Further, it is formed by compressing into a pot shape using a mold. There is also a method of joining two flat plates into one by a special welding method.

The double metal pan 10 described above must be pressurized, heated,
Perform pressing process. Therefore, there is residual thermal stress and processing stress, which affects the bonding of the above-mentioned two kinds of metals, and there is a risk of peeling due to cold work. However, as described later, the double metal pan 10 does not have residual processing stress, which eliminates the possibility of peeling of the double metal pan.

That is, for example, when the double metal pan 10 is formed of iron and copper (iron is rich in magnetism and inexpensive. Copper is rich in heat conductivity and inexpensive). Is compressed in a mold to form a mold, and the bottom layer portion 11 formed of the iron plate is further infiltrated into the copper electric casting liquid. Then, copper adheres to the surface of the bottom layer portion 11 to form the inner layer portion 12.

Thus, since the above-mentioned iron and copper are combined by an electrochemical method and are carried out at a low temperature and a low pressure, no stress remains inside the material and the material is stable. Binds well.

Further, since it can withstand cooling work and heavy use, the life of the double metal pan is also improved.
Therefore, a temperature controller can be attached to cook.

The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention extends to such modifications.

[0020]

As described in the above embodiments of the present invention, the double metal pan of the present invention absorbs the amount of heat of magnetic conductivity in the bottom layer portion formed of a good magnetic material, and , Since the amount of heat is supplied to the inner layer portion formed of a material having high thermal conductivity, the inner layer portion transfers the amount of heat to the outer periphery of the double metal pot, and the center of the pot when the pot is heated The temperature difference between the outer circumference and the outer circumference can be reduced as much as possible to promote smooth cooking.

Since the double metal pot is formed by joining two metal plates by electric casting,
It can be processed under low temperature and low pressure, so there is no residual stress inside, the material is stable, and the degree of metal bonding between the two is strong. Further, even during intense cold heat work, the two metal plates will not be torn, and the double metal pan formed according to the present invention can exert a remarkably great effect as compared with the conventional product.

[Brief description of drawings]

[Figure 1] Vertical side view of double metal pan

FIG. 2 is a vertical cross-sectional side view of a double metal pan showing a state where coils are arranged.

FIG. 3 is a vertical side view of the double metal pan showing a state in which vegetables are inserted.

FIG. 4 is a vertical sectional side view of a conventional pot.

[Explanation of symbols]

 10 Double metal pan 11 Bottom layer 12 Inner layer

Claims (6)

[Claims] 1. The bottom layer of the pot is formed of a magnetically conductive material such as iron, nickel, cobalt, steel, or an alloy.
A double metal pan characterized in that an inner layer portion is formed on an upper layer of the bottom layer portion by subjecting a material having high heat conductivity such as copper, silver and gold to electric casting. 2. A material having a high heat conductivity such as copper, silver and gold is infiltrated into an electric casting solution to cast a material having magnetic conductivity such as iron, nickel, cobalt, steel and alloy. The method for producing a double metal pan according to claim 1, which is characterized in that. 3. The double metal pan according to claim 1, wherein the surface of a magnetically conductive material such as iron, nickel, cobalt, steel, or an alloy is plated with a metal such as silver. 4. A material having magnetic conductivity such as iron, nickel, cobalt, steel, alloy, etc. and a material having high heat conductivity such as copper, silver, gold, etc. are adhered by an adhesive having high tensile strength, and stress is applied. The double metal pan according to claim 1, which has a structure free from (stress). 5. The two flat metal plates are adhered to each other with an adhesive or the like,
Or formed by electric casting,
The double metal pan according to claim 1, wherein the double metal pan is compressed and formed into a pan shape. 6. The double metal pan according to claim 1, wherein the double metal pan is formed by laminating multiple layers.