JP2002291615A - Pot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-weight and inexpensive pot usable as an electromagnetic cooker with excellent heat conductivity and durability to which a magnetic material is strongly joined by using the simple joining method of brazing while sufficiently presenting the characteristics of light-weight and inexpensive aluminum with excellent heat conductivity and durable and corrosion-resistant stainless respectively. SOLUTION: A pot body 3 is formed of a two-layer material whose inner side 1 is the stainless and outer side 2 is the aluminum. On the outer side of a bottom part 4 of the pot body 3, a two-layer clad material 7 whose top layer 5 to be a joining layer is the aluminum and lowest layer 6 to be a bottom layer is ferritic stainless, which is the magnetic material, is fixed by brazing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pot which can be used for an electromagnetic cooker excellent in functionality and mass productivity.

[0002]

2. Description of the Related Art Light and inexpensive aluminum pans with good thermal conductivity and stainless steel pans with excellent durability and corrosion resistance and a clean feeling are used for home and commercial use. However, none of them are magnetic materials and cannot be used for electromagnetic cookers.

[0003] For example, there is a pot made by drawing a three-layered material in which stainless steel is provided inside, aluminum is provided in an intermediate portion, and ferrite stainless steel which is a magnetic material is provided on the outside. It can be used, has excellent durability and thermal conductivity, but is very expensive and heavy.

For example, there is a relatively inexpensive electromagnetic cooker pot in which a ferritic stainless steel (magnetic material) is directly joined to the bottom of an aluminum pot or a stainless steel pot by brazing (brazing). The bonding strength (adhesion) with the material is low, the durability is poor, and the thermal conductivity is also poor.

The present invention solves the above problems by studying the problems and repeating trial and error. The present invention relates to a pot that can be used for an electromagnetic cooker, which is lightweight, excellent in heat conductivity and inexpensive. While fully exhibiting the properties of aluminum and stainless steel with durability and corrosion resistance, magnetic materials can be firmly joined using a simple joining method called brazing, and it is lightweight and has thermal conductivity and durability. It is an object of the present invention to provide an excellent and inexpensive pot that can be used for an electromagnetic cooker.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

A pot body 3 is formed of a two-layer or three-layer material of at least the inside 1 made of stainless steel and the outside 2 made of aluminum or stainless steel.
The present invention relates to a pot in which a clad material 7 in which an uppermost layer 5 serving as a bonding layer is aluminum and a lowermost layer 6 serving as a lowermost layer is a magnetic material heated by electromagnetic induction is fixed by brazing.

2. The pot according to claim 1, wherein said pot body 3 is formed of a two-layered material made of stainless steel on the inside 1 and aluminum on the outside 2.

[0009] In the inner 1 stainless, relates an intermediate portion 8 and iron, the pot according to claim 1, characterized in that the outer 2 to form the pan body 3 with three layers material formed of stainless It is.

In the clad material, the uppermost layer 5 serving as the bonding layer is made of aluminum, and the lowermost layer 6 is made of a ferrite stainless steel (18 chrome stainless steel) which is a magnetic material. Any one of ~ 3
It relates to the pot described in the section.

The pot body 3 is formed of a two-layer material of the inside 1 made of stainless steel and the outside 2 made of aluminum. On the outside of the bottom 4 of the pot body 3, the uppermost layer 5 serving as a bonding layer is made of aluminum, and the lowermost layer is made of aluminum. The present invention relates to a pot characterized in that a two-layer clad material 7 made of ferrite stainless steel, which is a magnetic material, is fixed to the lowermost layer 6 by brazing.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

A pot body 3 is formed of a two-layer or three-layer material of stainless steel on the inside 1 and aluminum or stainless steel on the outside 2, and on the outside of the bottom 4 of the pot body 3, the uppermost layer 5 serving as a bonding layer is aluminum. The structure is such that the clad material 7 in which the lowermost layer 6 serving as the lowermost layer is made of a magnetic material heated by electromagnetic induction is fixed by brazing.

Therefore, since the bottom 4 is provided with a magnetic material, it can be used for an electromagnetic cooker, and since the joining is performed by brazing, the cost is not increased and the manufacture is easy.

Further, in the present invention, the magnetic material is not merely brazed to the outside of the bottom portion 4 but is joined to the outside of the bottom portion 4 as the cladding material 7, that is, the uppermost layer 5 serving as a bonding layer is made of aluminum. A clad material 7 in which the lowermost layer 6 serving as the bottom layer is made of a magnetic material heated by electromagnetic induction is joined to the outside of the bottom 4.

Further, the present invention improves durability by making the inside 1 of the pot main body 3 stainless, improves the durability, and makes the outside 2 aluminum or stainless steel, so that it is lightweight and heat conductive. Inexpensive configuration with good performance.

Accordingly, since the joining between the outside of the pot bottom 4 and the clad material 7 is made of aluminum or stainless steel and aluminum, even if the joining is performed by brazing (brazing), which is a simple joining method, extremely strong joining is performed. Becomes

That is, the uppermost layer 5 of the clad material 7 is made of aluminum, and this aluminum is used as a bonding layer to improve the bonding strength. In addition, since the bonding partner of this aluminum is aluminum or stainless steel, the bonding strength is extremely high. And the adhesion is improved.

In particular, if the outside 2 of the pot body 3 is made of aluminum, the pot body 3 itself is lighter in weight, has better thermal conductivity and is more inexpensive, and the brazing joint on the outside of the bottom 4 is
Aluminum is joined to each other, and since the melting point of aluminum is lower than that of stainless steel, the joining strength is further increased, the adhesion is extremely high, the durability is improved, and the thermal conductivity is also extremely improved.

Therefore, the present invention is a pot that can be used for an electromagnetic cooker, and can use a simple joining method called brazing to join magnetic materials firmly, and is lightweight and heat-conductive.
It is possible to realize an inexpensive pot for an electromagnetic cooker that has excellent durability and is inexpensive.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 3, a two-layer material in which the inner side 1 is made of stainless steel (for example, SUS304 which is not magnetic material but is inexpensive and durable) and the outer side 2 is made of aluminum is drawn. To form a pot body 3 while the upper layer 5 serving as a joining layer is made of aluminum, and the lower layer 6 is made of a ferrite stainless steel (18 chrome stainless steel) which is a magnetic material.
The clad material 7 of the bonding layer is fixed by brazing (brazing).

Further, as ferritic stainless steel,
For example, SUS430, NAL160 or SUS4
44 may be used.

Therefore, in this embodiment, the pot body 3 is
304 and aluminum, it is an inexpensive material, lightweight and has good thermal conductivity
Has excellent durability and cleanliness due to the use of stainless steel.

Since aluminum is arranged on the outside 2, aluminum is formed on the outside of the bottom 4.
Since the upper layer 5 of the clad material 7 is aluminum,
When the clad material 7 is joined by brazing (brazing), the clad material 7 is joined with aluminum, so that the joining strength is extremely high and the thermal conductivity is also increased.

In the second embodiment shown in FIGS. 4 to 6, a three-layer material in which the inside 1 and the outside 2 are made of stainless steel (for example, SUS304 which is not a magnetic material but inexpensive and durable) and whose middle portion is iron is drawn. The pot body 3 was formed by processing, and the clad material 7 made of ferritic stainless steel (18 chrome stainless steel) with the upper layer 5 serving as a joining layer made of aluminum and the lower layer 6 used as a magnetic material was fixed by brazing. It has a structure.

As the ferrite stainless steel, SUS430 or the like is used as in the first embodiment.

In the present embodiment, since the outside 2 of the pot is made of stainless steel, the outside of the bottom 4 of the pot is also made of stainless steel. Therefore, when the clad material 7 is joined by brazing (brazing), the aluminum 5 of the upper layer 5 of the clad material 7 is formed. And the stainless steel on the outside of the bottom 4 of the pan, but the melting point of aluminum is low, and the melting point is higher than aluminum, but stainless steel (such as SUS304 which is not a magnetic material) ), The bonding strength is weaker than the bonding strength between the aluminums of the first embodiment, but high bonding strength can be realized, so that the thermal conductivity can be increased.

The present invention is not limited to the present embodiment, and the specific configuration of each component can be appropriately designed.

[0030]

Since the present invention is constructed as described above, it is possible to effectively use stainless steel and aluminum in an optimum form for a pan for an electromagnetic cooker. That is, by disposing stainless steel inside the pan, a long and clean material is provided. In addition to being able to cook various dishes with peace of mind, by arranging aluminum or stainless steel on the outside, it is possible to form a lightweight, inexpensive pan with good thermal conductivity, and has a magnetic material that is heated by electromagnetic induction. In addition, a simple brazing (brazing) of a clad material made of aluminum as the bonding layer can be firmly joined, and it is an epoch-making that the magnetic material can be joined to the bottom with excellent durability and thermal conductivity. It becomes a pot for induction cookers.

According to the second and fifth aspects of the present invention, particularly, aluminum is disposed on the outside, so that the outside of the bottom of the pot becomes aluminum, and the aluminum on the top of the clad material and the aluminum on the outside of the bottom of the pot are brazed (brazed). Therefore, the joining strength becomes extremely high and the durability is enhanced. In addition, the use of inexpensive and lightweight aluminum makes the pot for an electromagnetic cooker that is cheaper and lighter and extremely excellent in practicality.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a first embodiment.

FIG. 2 is an explanatory exploded sectional view in which main parts of the first embodiment are enlarged.

FIG. 3 is an explanatory sectional view in which main parts of the first embodiment are enlarged.

FIG. 4 is an explanatory sectional view of a second embodiment.

FIG. 5 is an explanatory exploded sectional view in which main parts of the second embodiment are enlarged.

FIG. 6 is an explanatory sectional view in which main parts of the second embodiment are enlarged.

[Description of Signs] 1 Inside 2 Outside 3 Body 4 Bottom 5 Top layer 6 Bottom layer 7 Clad material 8 Middle part

Continuation of the front page F term (reference) 4B055 AA09 AA12 BA14 BA22 BA29 BA35 CA02 CA05 CB16 DB14 FA01 FB02 FB05 FC06 FC08 FE05

Claims (5)

[Claims] 1. A pot body is formed of a two- or three-layer material of at least stainless steel on the inside and aluminum or stainless steel on the outside, and the outermost layer serving as a bonding layer is made of aluminum, A pot characterized in that a clad material whose lowermost layer is a magnetic material heated by electromagnetic induction is fixed by brazing. 2. The pot according to claim 1, wherein the pot body is formed of a two-layer material of stainless steel on the inside and aluminum on the outside. 3. The pot according to claim 1, wherein said pot body is formed of a three-layered material in which said inside is made of stainless steel, said intermediate portion is made of iron, and said outside is made of stainless steel. 4. The clad material according to claim 1, wherein the uppermost layer serving as the bonding layer is made of aluminum, and the lowermost layer is made of a ferrite stainless steel (18 chrome stainless steel) which is a magnetic material. 3. The pot according to any one of items 3 to 3. 5. The pot body is made of a two-layer material of stainless steel on the inside and aluminum on the outside, and the outermost layer serving as a joining layer is made of aluminum and the lowermost layer serving as the lowest layer on the bottom outside of the pot body. Characterized in that a two-layer clad material made of ferrite stainless steel, which is a magnetic material, is fixed by brazing.