JPS61163587A - Cooking apparatus for electromagnetic cooker - 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 Field of the Invention The present invention relates to a cooking utensil made of a non-metallic material for an electromagnetic cooker used in general households.

BACKGROUND OF THE INVENTION Conventionally, this type of cooking utensil has been produced by depositing a thin conductive layer 2 on the surface of the cooking utensil 1, which is heated by induction heating, as shown in FIG. 3, or by using induction heating, as shown in FIG. Cooking utensils 1 in which a magnetic metal plate 3 that generates heat is embedded or arranged in a cooking utensil 1, or a cooking utensil 1 formed by mixing magnetic metal powder 4 with a non-metallic material as shown in Fig. 6. It was common to use this as a cooking utensil exclusively for induction cookers.

Problems to be Solved by the Invention In such conventional electromagnetic cooking utensils made of non-metallic materials, a thin conductive layer that generates heat by induction heating is deposited on the surface of the cooking utensil. Because the cookware is embedded with a magnetic metal plate, or is made by mixing a non-metallic material with magnetic metal powder, the metal and the cookware will not interact with each other when exposed to an open flame such as gas. Due to the difference in thermal expansion coefficient with non-metallic materials, damage to the cooking utensils and peeling of the metal may occur, making it difficult to use one cooking utensil for both induction cooktops and open flames.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cooking utensil for an electromagnetic cooker that can be used for cooking over open flames such as gas.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention embeds a continuous magnetic metal plate that has openings in a non-metallic material and generates heat by electromagnetic induction. A space accommodating thermal expansion is formed between the plate and the nonmetallic material, and an air vent hole to the outside is provided in communication with the space.

Function The present invention has a space around the magnetic metal plate embedded in a non-metallic material to accommodate the thermal expansion of the magnetic metal plate and an air vent hole to the outside, so that it cannot be exposed to open flames such as gas. Even when heated directly, there is no fear that the cooking utensil will be damaged due to thermal expansion of the magnetic metal plate, and at the same time, the embedded magnetic metal plate allows cooking even with a porcelain cooker.

Further, since the magnetic metal plate has an opening, when embedded in a cooking utensil, the non-metallic material of the cooking utensil passes through the opening to form the cooking utensil, thereby improving the strength of the cooking utensil itself.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. FIG. 1 is a sectional view of the cooking utensil of the present invention. 5 is a cooking utensil (such as an earthenware pot) made of non-metallic material;
Reference numeral 6 denotes a continuous magnetic metal plate (for example, iron) that generates heat by electromagnetic induction, and is embedded in the bottom of the cooking utensil 6. The magnetic metal plate 6 has a circular shape, and a plurality of fan-shaped openings 7 are arranged symmetrically on the same radius. 8 is a space provided between the non-metallic material constituting the cooking utensil 6 and the inner and outer peripheries of the magnetic metal plate 6; 9 is an air vent hole to the outside that communicates with the space 8; They are placed in four locations.

Note that the space 8 is 1. For example, a melting member having a size of space 8 (7) is applied in advance around the magnetic metal plate 6, and after the melting member is embedded, it is melted and removed through the air vent hole 9. In particular, it can be formed.

Next, the effect of this configuration will be explained.

When the non-metallic cooking utensil 5 of the present invention is heated with an open flame such as gas, the magnetic metal plate 6 thermally expands, but a space 8 and an air vent hole 9 are provided around the magnetic metal plate 6. Therefore, there is no fear that the cooking utensil 6 made of a non-metallic material will be damaged due to thermal expansion of the magnetic metal plate 6.
The strength of the cooking utensil 6 made of non-metallic material is also improved by sandwiching the magnetic metal plate 6 with the material of the cooking utensil 6 made of non-metallic material through the opening 7 provided therein.

FIG. 2 shows an example of heating with an electromagnetic cooker, in which the magnetic metal plate 6 heated by electromagnetic induction is heated, and the cooking utensil 6 made of a non-metallic material is heated. Furthermore, since the magnetic metal plate 6 is a continuous body, even if the cooking utensil 6 made of a non-metallic material is shifted from the induction heating coil 11 on the top plate 10, a loop of eddy current is formed and heating becomes possible. .

Although the magnetic metal plate 6 in this embodiment has a circular shape, it may have a rectangular shape.In short, the magnetic metal plate with the opening 7 is embedded in the cooking utensil 6 made of a non-metallic material, and the magnetic metal plate 6 is metal plate 6
It is sufficient to provide a space 7 corresponding to thermal expansion and an air vent hole 9 to the outside around the . Further, in this example, the air vent holes 9 are provided at four locations symmetrically, but the number of air vent holes 9 may be one or more. All you have to do is let the trapped air flow out to the outside.

Effects of the Invention As described above, according to the present invention, a magnetic metal plate having an opening and generating heat due to electromagnetic induction is embedded in a non-metallic material, and the magnetic metal plate and the non-metallic material are connected to each other. By creating a space in between to accommodate thermal expansion and providing an air vent to the outside that communicates with the space, it is possible to heat it not only with an electromagnetic cooker but also with direct heat such as gas. It also improves the strength of non-metallic cooking utensils and enables heating even if the cooking utensil is displaced from the induction heating coil during heating with an electromagnetic cooker.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a half section of a cooking utensil according to an embodiment of the present invention, Fig. 2 is a sectional view when the cooking utensil for an electromagnetic cooker is used in combination with an electromagnetic cooker, and Fig. 3 - Fig. 6 are sectional views of conventional cooking utensils for an electromagnetic cooker. 6...Cooking utensil, 6...Magnetic metal plate, 7...Opening, 8...Space, 9...
...Air vent hole. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] A continuous magnetic metal plate having an opening and generating heat by electromagnetic induction is embedded in a non-metallic material, and a space corresponding to thermal expansion is formed between the magnetic metal plate and the non-metallic material. A cooking utensil for an induction cooker that connects with the space and has an air vent hole to the outside.