JPH11206558A - Cookware - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfactorily keep the stability when cookware is out on a heating utensil even if a bottom face thereof is deformed due to the use for a long time by forming an upward recessed part on the bottom face of the cookware such as a baking utensil. SOLUTION: A recessed part 3 is formed on a bottom face 2 of a cookware 1 so that the stability thereof on a heating utensil is not impaired even if a bottom face thereof is deformed due to its use for a long time on the heating utensil having high heating power. This recessed part 3 is formed by a thin- walled part which is formed substantially concentricity for the center C of the bottom face 2 and has an equal thickness, the recessed part 3 and a region other than the recessed part 3 on the bottom face 2 are continuous by a circumferential wall 4. When the recessed part 3 is formed on the bottom face 2 in this way, circumferential support X positioned on the outside of the circumferential wall 4 of the recessed part 3 comes into contact with a heating face and the cookware on the heating utensil is kept in a stable condition when it is put on the heating face of the heating utensil and is is used for a long time and the bottom face 2 tends to deform so as to swell slightly and downward on the whole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a frying pan, a pan,
A baking oven or any other cooking vessel, particularly relating to the shape of its bottom surface.

[0002]

2. Description of the Related Art The background of the present invention will be described with reference to FIG. 6. The heating power of household heating appliances 15 such as an electromagnetic cooker and a halogen stove tends to be strong recently.

In the electromagnetic cooker, the stove, and the like, the heating surface (top plate) 16 is formed of a glass plate. For example, in an electromagnetic cooker,
Magnetic lines of force are repeatedly generated by a heating coil (not shown) through which an alternating current flows, and eddy currents are generated on the bottom surface 12 of the cooking vessel 11 by the magnetic lines of force.
2 generates Joule heat. Here, the reason why the glass plate is used as the material of the heating surface 16 is to collect the magnetic lines of force on the bottom surface 12 of the cooking vessel 11.

[0004] The cooking container 11 is provided with such a heating device 15.
And heated on the heating surface 16. Cooking container 11
Conventionally, the bottom surface 12 is formed in a flat shape as shown in FIG. The reason for the flat shape is that the entire bottom surface 12 is brought into contact with the heating surface 16 of the heating device 15 so that the lines of magnetic force passing through the bottom surface 2 are increased as much as possible.

[0005]

However, if the cooking container 11 has a flat bottom surface 12 as described above, the following problems occur. The cooking container 11 initially has a flat bottom surface 12 as shown in FIG. 7, but is used for cooking for a long time with a heating device 15 having a strong heat,
As shown in FIG. 8, the convex portion slightly expands downward substantially concentrically with the center C of the bottom surface 12 and deforms into a convex shape. As shown in FIG. 8, the cooking container 11 in which the bottom surface 12 is deformed downwardly convex.
Is placed on the heating surface 16 of the heating device 15 of FIG.
The heating surface 16 is made of a glass plate, has a small coefficient of friction, and has a small contact area between the bottom surface 12 of the cooking vessel 11 and the heating surface 16 (in theory, this is one point of the center C in FIG. 8). The cooking container 11 placed on the utensil 15 becomes unstable. That is, the cooking container 11 easily rotates on the heating device 15 and becomes slippery, which is extremely dangerous.

The present invention has been made in order to solve such problems of the conventional example. SUMMARY OF THE INVENTION An object of the present invention is to provide a safe cooking container that does not lose its stability on a heating device even if the bottom surface is deformed after being used for a long time with a heating device having a strong heat power.

[0007]

In order to achieve this object, the cooking container of the present invention is designed to maintain stability when placed on a heating tool even when the bottom surface is deformed due to long-term use. , An upward concave portion is formed on the bottom surface. According to this cooking container, since the concave portion is formed in the bottom surface in advance, even when the bottom surface is deformed, the stability when placed on the heating tool is maintained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. As an example of a cooking vessel,
In the following embodiments, a container body of a frying pan is shown (a handle portion is not shown).

(First Embodiment) FIGS. 1 to 3 show a first embodiment of a cooking container according to the present invention. Cooking container 1
As shown in FIGS. 1A and 1B and FIG.
, A recess 3 is formed. As mentioned in the previous example,
When the bottom surface of the cooking vessel is flat, the stability of the cooking vessel placed on the heating tool is impaired when the bottom surface is deformed after being used for cooking for a long time with a heating device of high heat power and deformed.
Therefore, in order to cope with this problem, in the present invention, the concave portion 3 is formed in the bottom surface 2 in advance at the stage of manufacturing the cooking container 1. In the present embodiment, the concave portion 3 is formed of a thin portion having an equal thickness and formed substantially concentrically with the center C of the bottom surface 2. The concave portion 3 and a region other than the concave portion 3 on the bottom surface 2 are connected by a circumferential wall 4 (see FIG. 1B). The concave portion 3 is formed so as to maintain the stability of the cooking container 1 even when the bottom surface 2 is deformed due to long-term heating.

The bottom surface 2 initially used as shown in FIG. 1A has been used on a heating surface of a heating appliance such as an electromagnetic cooker (not shown) for a long time. 3, the bottom surface 2 is deformed so as to slightly swell downward as a whole. However, when deformed, the circumferential support X located outside the circumferential wall 4 of the concave portion 3 on the bottom surface 2 comes into contact with the heating surface. That is, the cooking container 1 is supported on the heating surface of the heating appliance by the circumferential support portion X concentric with the center of the bottom surface 2. Therefore, the stability of the cooking container on the heating device is maintained.

(Second Embodiment) FIGS. 4 and 5 show a cooking container according to a second embodiment of the present invention. Bottom 2
In the first embodiment described above, the concave portion 3 is formed of a thin portion having the same thickness, whereas in the present embodiment, the concave portion 3 is formed in a slightly upwardly concave shape with a gentle curve. It is composed of a thick thin part. The recess 3 is formed substantially concentrically with respect to the center C of the bottom surface 2 as in the first embodiment. The inner bottom 5 of the cooking vessel 1 is flat.

Although the bottom surface 2 initially has the shape shown in FIG. 4, it is deformed by long-term use so that the bottom surface as a whole swells slightly downward as shown in FIG. However, when deformed, the circumferential support portion Y located outside the circumference of the concave portion 3 on the bottom surface 2 comes into contact with the heating surface of the heating device. That is, the cooking container is supported on the heating surface of the heating appliance by the circumferential support Y concentric with the center C of the bottom surface 2. Therefore, the stability of the cooking container on the heating device is maintained.

(Modification) The first embodiment of the present invention is described above.
It is needless to say that the present invention is not limited to the second embodiment, and various modifications can be made. For example, the cooking container is not limited to a frying pan.

[0014]

As described above, according to the present invention,
The following effects are obtained. (1) According to the first aspect of the present invention, the concave portion is formed on the bottom surface, and the bottom surface is deformed so as to maintain stability on the heating tool even when used for a long time. That is, even if the bottom surface is deformed due to long-term use, a safe cooking container that does not rotate or slip on the heating appliance can be realized.

(2) According to the second aspect of the present invention, even when the heating tool is heated for a long time and the bottom surface swells downward as a whole, the circumferential support is concentric with the center of the bottom surface of the cooking vessel. The portion is supported on the heating surface of the heating device. Therefore, even if it is used for a long time and deformed, it is possible to realize a safe cooking container that does not rotate or slip on the heating device.

(3) According to the third aspect of the present invention, the concave portion is formed of a thin portion having an equal thickness and formed substantially concentrically with the center of the bottom surface. Therefore, even if it is used for a long time and deformed, it is possible to realize a safe cooking container that does not rotate or slip on the heating device.

(4) According to the fourth aspect of the present invention, the concave portion is formed in a substantially concentric shape with respect to the center of the bottom surface, and is formed of an unequal-thickness thin portion which is concavely upwardly drawn in a curved line. I have. Therefore, even if it is used for a long time and deformed, it is possible to realize a safe cooking container that does not rotate or slip on the heating device.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state before long-term use of a cooking container according to a first embodiment of the present invention, where (A) is an overall view and (B) is a partially enlarged view of FIG. .

FIG. 2 is a reduced bottom view of the cooking container of FIG. 1;

FIG. 3 is a longitudinal sectional view showing a deformed state of the cooking container of FIG. 1 after being used for a long time.

FIG. 4 is a longitudinal sectional view showing a state before a long-term use of a cooking container according to a second embodiment of the present invention.

5 is a longitudinal sectional view showing a deformed state of the cooking container of FIG. 4 after being used for a long time.

FIG. 6 is a use state diagram showing a state where a cooking container is placed on a cooking utensil.

FIG. 7 is a longitudinal sectional view showing a state of a conventional cooking container before long-term use.

8 is a longitudinal sectional view showing a deformed state of the conventional cooking container of FIG. 7 after being used for a long time.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooking container 2 Bottom surface 3 Concavity 15 Heating device 16 Heating surface C Center of bottom surface X, Y Circular support

Claims (4)

[Claims] 1. A cooking container characterized in that an upward concave portion is formed on the bottom surface so as to maintain stability when placed on a heating tool even when the bottom surface is deformed due to long-term use. . 2. The cooking container according to claim 1, wherein the recess is formed substantially concentrically with the center of the bottom surface. 3. The cooking container according to claim 2, wherein the concave portion comprises a thin portion having an equal thickness and formed substantially concentrically with the center of the bottom surface. 4. The concave portion according to claim 2, wherein the concave portion is formed substantially concentrically with respect to the center of the bottom surface, and is formed of an unequal thickness thin portion which is curved upward and concavely formed. Cooking container.