KR100986247B1 - A method for manufacturing cooking instrument for induction range and the cooking instrument of the same - Google Patents

Abstract

According to the present invention, in the production of a cooking container for an induction stove, a plurality of protrusions having a predetermined shape are integrally formed on the bottom surface of the container body on which the conductive plate is mounted, and the press-formed conductive plate is matched through the protrusion and then presses and Manufactured through a polishing process, the conductive plate is firmly installed at the bottom of the container body so that the container body and iron (Fe) or iron-containing alloy made of aluminum or non-conductive alloy generated by the difference in thermal expansion due to long-term use The present invention relates to a cooking vessel for an induction stove and a method of manufacturing the same, which can prevent separation of a conductive plate of conductive metal.

As described above, the present invention relates to a method of manufacturing an induction stove cooking container, a) a bent portion is formed from a conductive metal made of iron (Fe) or an iron-containing alloy, a circular first through hole is formed in a central portion thereof, Pressing a conductive plate having a plurality of second through holes formed thereon; b) forming a plurality of recessed grooves on the bottom of the container body formed by die-casting injection, in which protrusions and bent portions communicating with the first through holes and the second through holes of the conductive plate are seated; c) pressing the pressed conductive plate with the protrusions and then pressing; d) polishing the press working surface.

According to the present invention as described above, in manufacturing a cooking container for an induction stove, a plurality of protrusions having a predetermined shape are integrally formed on the bottom of the container body in which die casting is injected and the conductive plate is mounted, and the conductive plate is matched with the protrusion. After pressing the protrusions with a press and polishing the remaining parts, the flatness of the conductive plate can be easily ensured, the partial lifting of the conductive plate can be prevented, and the conductive plate can be firmly installed in the lower part of the container body. Therefore, there is a useful effect to prevent the separation phenomenon of the conductive plate due to long-term use.

Induction stove, cooking vessel, conductive plate, die casting

Description

A method for manufacturing cooking instrument for induction range and the cooking instrument of the same}

The present invention relates to a cooking vessel for an induction stove and a method for manufacturing the same, and more particularly, in the manufacture of a cooking vessel for an induction stove, a plurality of protrusions having a predetermined shape are integrally formed on the bottom of the container body on which the conductive plate is mounted. After the press-formed conductive plate is matched through the protrusions and manufactured through a pressing and polishing process, the conductive plate is firmly installed in the lower part of the container body so that the aluminum is generated due to the difference in thermal expansion due to long-term use. The present invention relates to a cooking vessel for an induction stove and a method of manufacturing the same, which can prevent a separation phenomenon between a container body made of a material and a conductive plate which is a conductive metal made of iron (Fe) or an iron-containing alloy.

Induction range is generally made of iron (Fe) or iron-containing alloy material attached to the lower part of the container body of aluminum material or non-conductive alloy by the effect of electric swivel on the bottom surface of the container. The conductive plate, which is a conductive metal, is rapidly generated so that food in the container can be heated and cooked.

These induction stoves do not generate sparks or harmful gases, so there is no danger of fire, no carbon monoxide (CO) that is inevitably generated when gas is used as a heat source, and there is no consumption of indoor oxygen. It is widely used in the food industry.

In addition, the induction stove has no risk of burns even if it touches the top plate while the container is heated, and there is no spark and there is no risk of fire or explosion, and there is no damage even when body parts contact the top plate while the power is supplied. Has an advantage.

The induction stove is used as a cooking vessel of the metal material by the above characteristics, and the container body molded from a relatively light non-conductive metal material, that is, such as aluminum for lightweight, and installed on the bottom surface of the container body It consists of a conductive metal material, that is, a conductive plate made of iron or an iron-containing alloy.

1 is a perspective view showing an example of a conventional cooking container 1 for an induction stove, the container body (2) having a conductive plate (3) in which a plurality of inclined holes (4) such as circular, elliptical, stone-shaped perforated on the inner surface When the conductive plate 3 is placed at the bottom of the container body during the molding of the container body, the non-conductive metal material for forming the container body is continuously injected along the passage provided by the inclined hole 4 so that the conductive plate 3 is It is attached to the main body 2 integrally.

However, the conductive plate 3 as described above is composed of a press type integrated structure, so deformation or distortion occurs after molding, so that the upper surface of the conductive plate 3 is positioned at the bottom of the container body 2. There is a problem in that it is not firmly adhered to the bottom, and thus partially lifted phenomenon occurs in the process of being installed on the bottom of the container body 2 through the non-conductive metal material for forming the container body.

In addition, in the process of pressing the non-conductive metal material Al by pressing, the aluminum material is not fully raised through the inclined hole 4, and thus is not partially molded as shown in FIG. 1. The recessed gap 5 is formed. In this case, additional work is required to beat the upper surface of the conductive plate 3 in order to eliminate the gap, thereby making it difficult to secure the flatness of the conductive plate 3 or, in severe cases, the conductive plate 3 from the container body 2. There was a problem that breaks out.

Applicants proposed by the present inventors to solve the above problems, as shown in the drawings shown in Figures 2a and 2b, by forming a hole by processing a conductive plate, and crimped in a riveted form by cutting the protruded aluminum part It is formed in a flat surface, but such a structure is different in thermal expansion coefficient due to the difference in thermal expansion coefficient between the conductive plate and the aluminum according to the use of the induction stove cooking vessel, the contact portion between the aluminum and the conductive plate increases as the frequency of use increases. Since the portion of the aluminum pressing the conductive plate is small, the aluminum portion holding the conductive plate is loose, resulting in a situation in which the conductive plate falls from the aluminum bottom surface. When the conductive plate is peeled off from the aluminum bottom surface, heat generated in the conductive plate is not smoothly transferred to the aluminum body, thereby reducing heat transfer efficiency.

The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide an induction in which the conductive plate is not separated from the container body even after long-term use by firmly installing a conductive plate integrally under the container body The present invention provides a cooking vessel for a stove and a method of manufacturing the same.

The present invention for achieving this object is specifically,

In the configuration of the cooking container for induction stove,

A conductive plate formed by a press from a conductive metal plate made of iron (Fe) or an iron-containing alloy, a circular first through hole is formed at the center of the formed bent portion, and a plurality of second through holes are processed along the inner circumference; ;

A container body having a plurality of concave grooves in which protrusions and bent portions communicating with the first through hole and the second through hole of the conductive plate are seated on a bottom surface of the container body formed by die casting injection of an aluminum material or a non-conductive alloy;

The press-formed conductive plate is coupled to the protruding portion, the bent portion is seated in the recessed groove, and pressed by a press to form a conductive plate, characterized in that formed by grinding the press-worked surface,

The bent portion of the conductive plate is formed by forming a bent portion in which the cutting surface is bent into a "┗━┛" shape by processing the conductive metal by a press, and is formed in a "┗ ┛" shape by blanking or piercing,

One end of the first through hole and the second through hole of the conductive plate is characterized in that it is partially in communication with each other,

The inner side of the plate is connected to each other, the plate is characterized in that separated from each other by the 'U' shaped space portion,

The shape of the piercing formed in the conductive plate is any one of "○", "□", "△", "☆", "♡", "♧" or can be used in combination, characterized in that

Protruding portions formed on the bottom surface of the container body is characterized in that each has a trapezoidal shape or a rectangular shape or a cylindrical shape in which the top is grooved,

Both ends of the conductive plate in contact with the rectangular projection formed on the container body has a shape of one selected from oblique, 'b' shaped, the shape of the bottom is inclined at a steep inclination of 70 ~ 90 ° at a predetermined angle ,

The bent portion 25 of the first through hole and the second through hole of the conductive plate is formed by pressing the protrusion 12a formed on the bottom surface of the container body 12 with a press so that only a part of the bent portion 25 is in close contact. Characterized in that it is formed,

The projection portion 30 is formed at the corners of the first through hole and the second through hole of the conductive plate to prevent separation or peeling due to the difference in thermal expansion between the conductive plate and the container. will be.

In the manufacturing method of the cooking container for induction stove,

a) press-processing a conductive plate having a bent portion formed from a conductive metal made of iron (Fe) or an iron-containing alloy, a circular first through hole formed at a central portion thereof, and a plurality of second through holes formed along an inner circumference thereof; ;

b) forming a plurality of recessed grooves on the bottom of the container body formed by die-casting injection, in which protrusions and bent portions communicating with the first through holes and the second through holes of the conductive plate are seated;

c) pressing the pressed conductive plate with the protrusions and then pressing;

d) polishing the press working surface;

In the press working step of the conductive plate, a first step of forming a bent portion for cutting a conductive metal into a “┗━┛” shape, and blanking the second step, piercing a plurality of through holes on the inner surface of the blanked product. Characterized by consisting of steps,

One end of the first through hole and the second through hole of the conductive plate is characterized in that it is partially in communication with each other,

The inner side of the plate is connected to each other, the plate is characterized in that separated from each other by the 'U' shaped space portion,

The protrusions formed on the bottom surface of the container body each have a trapezoidal shape or a rectangular shape or a cylindrical shape with grooves on the top thereof, and the shapes of the piercings formed on the conductive plate are "○", "□", "△", "☆ It relates to a method of manufacturing a cooking container for an induction stove, characterized in that any one of "," ♡ "," ♧ "or can be used in combination.

The present invention also relates to a cooking container for an induction stove, which is manufactured by the above method.

According to the present invention as described above, in manufacturing a cooking container for an induction stove, a plurality of protrusions having a predetermined shape are integrally formed on the bottom of the container body in which die casting is injected and the conductive plate is mounted, and the conductive plate is matched with the protrusion. After pressing the protrusions with a press and polishing the remaining parts, the flatness of the conductive plate can be easily ensured, the partial lifting of the conductive plate can be prevented, and the conductive plate can be firmly installed in the lower part of the container body. Therefore, there is a useful effect to prevent the separation phenomenon of the conductive plate due to long-term use.

The object of the present invention described above

In the manufacturing method of the cooking container for induction stove,

a) forming a bent portion from a conductive metal made of iron (Fe) or an iron-containing alloy, forming a circular first through hole at a center thereof, and pressing the conductive plate having a plurality of second through holes along an inner circumference thereof;

b) forming a plurality of recessed grooves on the bottom of the container body formed by die-casting injection, in which protrusions and bent portions communicating with the first through holes and the second through holes of the conductive plate are seated;

c) pressing the pressed conductive plate with the protrusions and then pressing;

d) polishing the press-worked surface; is achieved by configuring a method of manufacturing a cooking container for an induction stove.

In addition, in the configuration of the cooking container for induction stove,

A conductive plate formed by a press from a conductive metal plate made of iron (Fe) or an iron-containing alloy, a circular first through hole is formed at the center of the formed bent portion, and a plurality of second through holes are processed along the inner circumference; ;

A container body having a plurality of concave grooves in which protrusions and bent portions communicating with the first through hole and the second through hole of the conductive plate are seated on a bottom surface of the container body formed by die casting injection of an aluminum material or a non-conductive alloy;

The induction stove cooking vessel, wherein the press-formed conductive plate is coupled to the protruding portion, the bent portion is seated in the recessed groove, and pressed into a press to form a conductive plate, and the press-formed surface is polished. will be.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an example of a conventional induction stove cooking container, Figure 2a is a plan view and a longitudinal sectional view showing a conductive plate in a conventional induction stove cooking container, Figure 2b is a cross-sectional view showing a conventional induction stove cooking container. 3 is a plan view and a longitudinal sectional view showing an embodiment of a conductive plate in an induction stove cooking vessel according to the present invention, and FIG. 4 is an enlarged cross-sectional view of a junction of the induction stove cooking vessel according to the present invention. 5 is a cross-sectional view showing another embodiment of the induction stove cooking container according to the present invention, Figure 6 is a cross-sectional view showing another embodiment of the induction stove cooking container according to the present invention, Figure 7 is an induction according to the present invention It is sectional drawing which shows another Example of the cooking container for a range.

As shown in Figure 3 and 4, the induction stove cooking vessel 10 according to the present invention is a container body 12 having a storage unit for cooking food therein, and integrally in the lower portion of the container body And a conductive plate 13 to be provided.

The container body 12 is formed of a non-conductive metal such as aluminum (Al) or stainless steel, and has a receiving portion inside to enable cooking by containing food of a predetermined capacity, and a handle (not shown) is provided on one side of the outer circumferential surface thereof. It is installed.

The conductive plate 13 is press-processed with a conductive metal such as iron (Fe) or an iron-containing alloy material, and as shown in FIGS. 3 and 4, a circular first through portion is formed in the center of the inner surface of the conductive plate 13. The hole 13a is formed, and the 2nd through hole 13b of predetermined height which has a circular or elliptical shape is formed in the horizontal and vertical direction along the inner surface circumference.

At this time, the cut surface in which the holes of the first through hole 13a and the second through hole 13b are formed is configured to form a bent portion that is bent in a “┗ ┛” shape.

Meanwhile, one end portion of the first through hole 13a of the conductive plate 13 and one end of the second through hole 13b in the vertical direction are partially communicated with each other, and the conductive plate 13 has an inner side of the plate 13c. It can be configured to have a circular shape or a quadrangular shape by connecting with each other, and each plate 13c is separated from each other by the 'U' shaped space portion 13d.

Hereinafter, a cooking vessel for an induction stove according to the present invention and a manufacturing method thereof will be described.

First, the conductive plate 13 is pressed from a conductive metal made of iron (Fe) or an iron-containing alloy, which presses the conductive metal into holes in the first through holes 13a and the second through holes 13b. The formed cut surface forms a bent portion that is bent into a "┗━┛" shape, blanks first, and pierces a plurality of through holes in the inner surface of the blanked product to form a "┗ ┗" shape. Go through the steps of forming.

The shape of the piercing formed on the said electrically conductive plate can use any one of "(circle)", "(square)", "(triangle | delta)", "☆", "♡", and "♧", or can use it in combination. This can change the shape of the mold to represent the shape of the piercing, it is possible to select the pattern formed on the conductive plate at the request of the consumer.

On the other hand, as shown in Figure 4, the first through hole (13a) of the conductive plate 13 in the bottom surface of the container body 12 is formed by the die-cast injection injection hole "20" in the shape of "┗━┛" And integrally form a plurality of protrusions 12a each having a grooved trapezoidal shape or a rectangular shape or a cylindrical shape communicating with the second through hole 13b at equal intervals.

The bent portion “┗ ┛” shape of the conductive plate 13 is seated in the recess, and the press-formed conductive plate 13 is matched with the protruding portion 12a, and then pressed. The machined surface is polished to obtain a cooking vessel for an induction stove.

As shown in FIG. 4 according to the press working in the above process, the protrusion 12a is formed in the groove between the both ends of the conductive plate 15 to form a curved surface of a predetermined curvature, in this state As the bottom surface of the container body 12 is polished, the bent portion 25 formed at the corners of the first through hole 13a and the second through hole 13b of aluminum is seated in the recess 20, and the protrusion Since 12a is pressed and pressed by the press to press the conductive plate 15 firmly, the formation of the concave gap 5 shown in FIG. 1 is prevented, and the flatness of the conductive plate 13 is easily secured. Of course, since the conductive plate 15 attached to the bottom of the main body aluminum container is inductively heated to sufficiently suppress the amount of increase as the temperature rises, peeling of the conductive plate from the main body due to long-term use does not occur. .

In addition, as illustrated in FIG. 5, the protrusion 12a formed on the container body 12 may have a trapezoidal shape, a rectangular shape, or a cylindrical shape, and the container body may contact the rectangular protrusion part 12a. Both ends of the conductive plate 15 formed on the bottom of the (12) has an oblique shape of about 45 ° angle, or as shown in Figure 6, it can be configured to be inclined at a steep slope of 70 ~ 90 ° In the case of the conductive plate 15 having such an inclined surface, the projection 12a is embedded and polished on the inclined surface, so that the finishing can be made easier.

In addition, as shown in FIG. 7, the protrusions 12a are formed by forming protrusions 30 at the ends (the ends of the first through hole 13a and the second through hole 13b) having the shapes shown in FIGS. Is formed to enhance the pressing force of the aluminum formed by pressing, the protrusion 30 is formed to prevent separation or peeling due to the difference in thermal expansion of the aluminum or non-conductive stainless steel body and the conductive plate 15. It is.

The reason is that the conductive plate 15 is first heated by induction heating, and the container body is configured to transfer heat to the container through the contacted portion, thereby expanding due to thermal expansion of the conductive plate 15 by repeated use. Is formed to be sufficient to suppress the aluminum filled in the protrusions 12a and the concave groove 20, the protrusions 30 is an added configuration for suppressing the change caused by the thermal expansion of the conductive plate 15, the container is It is to prevent the conductive plate 15 from being peeled from the container when it expands or contracts. The protrusions 30 may be formed by bending the conductive plate 15 when the conductive plate 15 is processed or naturally generated when pressing the conductive plate 15.

Figure 8 is a cross-sectional view showing another embodiment of the induction stove cooking container according to the present invention inserted into the protrusions (12a) protruding into the main body 12 and bent in the recess groove 20 formed wide It is a structure which couples the part 25, and couples the electrically conductive plate and the main body 12 by crimping | hanging the projection part 12a with a press.

This configuration is a configuration that can omit the polishing process, even if the thermal conductivity is lower than the configuration of Figure 5 is suitable for producing a low-cost container due to the reduction in production costs.

The reason why the thermal conductivity is lower than that of FIG. 5 is that the force of the metal of the main body 12 that is compressed and embedded in the recessed groove 20 presses the conductive plate 13 so that the thermal contact is in close contact with the main body. Because it is smaller. Since heat is transmitted by the adhesion between the metal and the metal, the conductivity of the heat transmitted to the main body 12 becomes relatively small in the configuration of FIG.

Although the above-described induction stove cooking vessel and a method for manufacturing the same according to the present invention have been described with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed herein and is within the technical scope of the present invention. Of course, various modifications may be made by those skilled in the art.

1 is a perspective view showing an example of a conventional induction stove cooking vessel.

Figure 2a is a plan view and a longitudinal sectional view showing a conductive plate in a conventional cooking vessel for induction stove.

Figure 2b is a cross-sectional view showing a conventional cooking vessel for induction stove.

3 is a plan view and a longitudinal sectional view showing an embodiment of a conductive plate in an induction stove cooking vessel according to the present invention.

Figure 4 is an enlarged cross-sectional view of the junction of the induction stove cooking vessel according to the present invention,

5 is a cross-sectional view showing an embodiment of an induction stove cooking vessel according to the present invention.

Figure 6 is a cross-sectional view showing another embodiment of the induction stove cooking vessel according to the present invention.

Figure 7 is a cross-sectional view showing another embodiment of the induction stove cooking vessel according to the present invention.

Figure 8 is a cross-sectional view showing another embodiment of the induction stove cooking vessel according to the present invention.

Description of the Related Art

10: cooking container 12: container body

12a: protrusion

13: conductive plate 13a: first through hole

13b: second through hole 13c: plate

13d: 'U' shaped space part

20: recess groove 25: bent portion

Claims (16)

delete delete delete delete delete delete A conductive plate formed of a press from a conductive metal plate made of iron (Fe) or an iron-containing alloy, a circular first through hole formed in a central portion of the formed bent portion, and a plurality of second through holes formed along an inner circumference; And a container body formed with a plurality of concave grooves in which protrusions and bent portions communicating with the first through hole and the second through hole of the conductive plate are seated on a bottom surface of the container body formed by die casting injection of an aluminum material or a non-conductive alloy. The press-formed conductive plate is combined with the protruding portion, the bent portion is seated in the recessed groove, and pressed into a conductive plate by pressing with a conductive plate. The cutting surface is formed into a bent portion in the shape of “┗━┛” by forming a blank and pierced so as to have a “┗ ┛” shape. One end of the first through hole and the second through hole of the conductive plate partially communicate with each other. , The conductive plate is connected to each other inside the plate, the cooking plate for induction stove separated from each other by the 'U' shaped space between In the container, For the induction stove, characterized in that the protrusions 30 are formed in the bent portion 25 formed at the corners of the first through hole and the second through hole of the conductive plate to prevent separation due to the difference in thermal expansion between the conductive plate and the container. Cooking container. delete delete delete delete delete delete delete a) forming a bent portion from a conductive metal made of iron (Fe) or an iron-containing alloy, forming a circular first through hole at a center thereof, and pressing the conductive plate having a plurality of second through holes along an inner circumference thereof; b) forming a plurality of recessed grooves on the bottom of the container body formed by die-casting injection, in which protrusions and bent portions communicating with the first through holes and the second through holes of the conductive plate are seated; c) pressing the pressed conductive plate with the protrusions and then pressing; d) polishing the pressed surface; In the press working step of the conductive plate, a first step of forming a bent portion having a conductive surface in a “┗━┛” shape and blanking the conductive metal, and a second step of piercing a plurality of through holes in the inner surface of the blanked product. In the manufacturing method of the induction stove cooking vessel, characterized in that the one end portion of the first through hole and the second through hole of the conductive plate is in communication with each other, Induction, characterized in that formed in the bending portion 25 formed in the corner portion of the first through hole and the second through hole of the conductive plate to prevent separation due to the difference in thermal expansion by the heat of the conductive plate and the container Method for manufacturing a cooking vessel for a stove. delete

Images