JPS62136790A - Electromagnetic induction heating container - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an electromagnetic induction heating container such as a pot or keratle for cooking using induction heating by an electromagnetic generator.

(Prior Art) As a conventional technology, there is, for example, Japanese Patent Laid-Open No. 184486/1986.

(Problems to be Solved by the Invention) An object of the present invention is to provide an electromagnetic induction heating container with improved shape stability and induction heating characteristics.

(Means for Solving the Problems) The present invention provides that the container body includes at least one bottomed cylindrical nonmagnetic metal wall and at least one bottomed cylindrical magnetic wall that generates heat due to the magnetic force of electromagnetic induction. The walls are layered over the sides and bottom of the container body, and a metal brazing material layer is interposed between the layered interfaces of the walls, and the walls are entirely brazed to each other. The gist is an electric IaPgS heating vessel.

(Function) The heating container of the present invention has at least one non-magnetic metal wall layer and at least one magnetic wall layer layered over the sides and bottom of the container body, and has a magnetic wall layer on the outer wall layer of the container body. At the same time, each wall is fully brazed with metal brazing material, and the container body has a laminated structure covering the sides and bottom, and the entire outer wall layer of the container body is bonded by electromagnetic induction magnetic force. It is designed to generate heat.

(Example) Next, a first example of the present invention will be described with reference to FIGS. 1 and 2.

The container body 1 of the electromagnetic induction heating container is formed into a bottomed cylindrical shape having a side portion 1a and a bottom portion 1b, and the inner wall layer of the container body 1 has a right bottom cylindrical shape that is continuous with the side portion 1a and the bottom portion 1b. A non-magnetic metal wall K for the inner wall of the container body 1 is disposed, and a magnetic wall formed in the shape of a cylinder with a bottom made of magnetic material is provided on the outer wall layer of the container body 1 to generate heat using the magnetic force of an electromagnetic generator (not shown). Further, a brazing metal layer R is entirely interposed between the non-magnetic metal wall for the inner wall and the magnetic wall G to form both walls K.

G are brazed and joined together on their entire surface in close contact with each other.

The non-magnetic metal wall K for the inner wall is made of aluminum.

A non-magnetic metal plate such as an aluminum alloy or a light metal plate made of a non-magnetic material having high heat transfer properties and the same effectiveness as these, or a stainless steel 304 material is used.

In addition, the magnetic wall G for the heating plate is made of a magnetic material that generates heat by the induced magnetic force of the electromagnetic generator, such as iron or stainless steel 430.
For example, J 1s-BA4, which is made of aluminum containing a silicon component, is used as a metal plate such as aluminum alloy.
000 thread hard brazing material (heated at furnace temperature for about 1 to 15 minutes to a melting point of 570'' to 630°C) is applied.

When the container body 1 is placed on an electromagnetic generator (not shown), the magnetic wall G generates heat due to the magnetic force of electromagnetic induction, and the heat is also conducted to the metal wall K for the inner wall, thereby heating the container body 1 as a whole. be done.

To explain the method for manufacturing the container body 1, first, a light metal plate P1, which will become the non-magnetic metal wall 1 for the inner wall, is cut into a circular shape, degreased with caustic soda, and one side of the light metal plate P1 is coated with Apply flux (fluorine-based oxide film remover) to increase bonding strength.

Then, the disc-shaped magnetic metal plate P2, which will become the magnetic wall G, is degreased, and 7 lux is applied to one side of the plate to increase the bonding strength during soldering, and the light metal plate P1 and the magnetic metal plate are bonded to each other. Both metal plates Pi and P2 are fastened and fixed with a cutting tool with a flat metal brazing material plate P3 interposed between them and P2, and heated in a heating furnace to melt the metal brazing material plate P3 and separate the two metal plates Pi and P2. A molded base material S having metal plates P1 and P2 joined together by brazing is created. Next, this molded base material S is molded into a predetermined cylindrical shape with a bottom to create a container body 1.

After the container body 1 is molded, it is polished, degreased, etc.
Painted or anodized. In the case of a painted finish, the container body 1 is coated with, for example, fluororesin or heat-resistant, and in the case of anodization treatment, the magnetic wall body G is masked with a protective film that is resistant to anodization treatment. After preventing corrosion in the electrolyte, the container body 1
is immersed in an electrolytic solution, a voltage is applied using carbon as a counter electrode, and anodization is performed for a predetermined period of time to form an anodic oxide film on the surface of the light metal wall of the container body 1.

Next, the operation and effects of the embodiment having the above configuration will be explained.

In this example, the container body 1 includes a bottomed cylindrical non-magnetic metal wall for the inner wall, and a right bottom cylindrical magnetic wall G that generates heat due to the magnetic force of electromagnetic induction. are layered to form the outer wall layer of the container body 1, and G is layered on both walls.
A metal brazing material layer R is interposed between the multi-layer interfaces of both walls and G is entirely soldered to each other.

Therefore, the side portion 1a and the bottom portion 1b of the container body 1 each have a multilayer structure, which increases the structural strength of the container body 1, improves the morphological stability, and has the effect of making the heat conduction efficiency uniform. .

Further, the outer wall layer of the container body 1 is made of a magnetic wall G from the side portion 1a to the bottom portion 1b, and the magnetic wall G and the non-magnetic metal wall for the inner wall are entirely joined by brazing. Therefore, the conductive heating characteristics of the entire outer wall layer of the container body 1 are improved, the thermal conductivity of the entire container body 1 is increased, and the heating effect on the cooking material cooked within the container body 1 is improved. It is possible to make the cooking specifications more diverse and richer.

Next, a second embodiment of the present invention will be described with reference to FIG. A second magnetic wall member G2 having a cylindrical shape with a bottom is disposed on the outer wall layer of the magnetic wall member G2, and a non-magnetic metal wall member K having a cylindrical shape with a bottom is layered between both magnetic wall members G1 and G2. In addition, each wall body G1. G
2. Metal brazing filler metal layers R, R are interposed between each layer interface.

In addition, in the third embodiment shown in FIG. 4, a first non-magnetic metal wall 1 is disposed on the inner wall layer of the container body 1B, and a first magnetic wall is provided on the outside of the first non-magnetic metal wall 1. A second non-magnetic metal wall 2 is layered on the outside of the first magnetic wall G1, and an outer wall layer of the container body 1B is further layered on the outside of the second non-magnetic metal wall 2. M layers of second magnetic wall bodies G2 are formed, and each wall body has 1. G1. 2. A metal brazing material layer RR is entirely interposed between each multilayer interface of G2.

Note that the operations and effects of the second and third embodiments are substantially the same as those of the first embodiment, so their explanations will be omitted.

(Effects of the Invention) In other words, the present invention provides that the container body includes at least one bottomed cylindrical non-magnetic metal wall and at least one bottomed cylindrical magnetic wall that generates heat due to the magnetic force of electromagnetic induction. are layered over the sides and bottom of the container body, and a metal brazing material layer is interposed between the layered interfaces of each wall, each of which is fully brazed to each other. This has the effect of improving the shape stability and dielectric heating characteristics of the entire container body.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view of the container body, FIG. 2 is a longitudinal sectional view of the molded base material of the container body, and FIG. FIG. 4 is a longitudinal cross-sectional view showing a container main body according to a second embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view showing a container main body according to a third embodiment of the present invention. 1... Container body 1a... Side part 1b... Bottom, K1. 2...Nonmagnetic metal wall body G, G1. G2...Magnetic wall R...Metal brazing material layer

Claims (1)

[Claims] The container body includes at least one bottomed cylindrical non-magnetic metal wall and at least one bottomed cylindrical magnetic wall that generates heat due to the magnetic force of electromagnetic induction, extending over the side and bottom of the container body. 1. An electromagnetic induction heating container characterized in that the walls are layered and a metal brazing material layer is interposed between the interfaces between the layers of the walls, the walls being entirely brazed to each other.