KR100231109B1 - Induction heating - type cooking container and pan and their manufacturing method - Google Patents

Abstract

The present invention relates to an inner pot and an electromagnetic induction heating cooking pot of an electromagnetic induction heating cooker in which a heating member for a magnetic body and a non-magnetic aluminum body are closely coupled to each other in an inner pot and an electromagnetic induction heating cooking pot of an electromagnetic induction heating cooker and a manufacturing method thereof A metal wire mesh or a punching metal is fixed to the magnetic steel sheet SUS material or the Fe material as a heating plate by brazing and then the metal wire mesh or the punching metal is directly or press-molded into a heating member, Casting the molten aluminum by high-speed injection and aluminum casting while evacuating the heating plate of the heating member while evacuating the heating plate of the heating member, and is excellent in adhesion strength and thermal conductivity, An inner pot for an electromagnetic induction heating cooker and a manufacturing method of an electromagnetic induction heating cooking pot .

A metal wire mesh 3 or a punching metal 17 is attached to the SUS material or Fe material of the magnetic steel sheet as the heating plate 4 on the bottom surface of the inner pot 1 or the electromagnetic induction heating cooking pot 10 for the electromagnetic induction heating cooker, And the metal plate 3 or the punching metal 17 brazed to the heating plate 4 of the heating member and the aluminum body 5 are sandwiched by aluminum casting The inner pot and the electromagnetic induction heating cooking pot for the electromagnetic induction heating cooker and the casting method thereof, which do not cause deformation by being cast in a winding manner, and do not damage the appearance and lighten the weight.

Description

Internal pot and induction heating cooking pot for electromagnetic induction heating cooker and manufacturing method thereof

FIG. 1 is a sectional view of an inner pot of an electromagnetic induction heating cooker of the present invention,

FIG. 2 is a detailed view of part A of the inner pot of the electromagnetic induction heating cooker of the present invention,

FIG. 3 is a detailed view of the heating plate fixed to the metal wire mesh by soldering,

FIG. 4 is a sectional view of the inner pot making apparatus of the electromagnetic induction heating cooker of the present invention,

FIG. 5 is a sectional view of the apparatus for manufacturing an electromagnetic induction heating cooking pot of the present invention,

FIG. 6 shows the embodiment of the pre-pouring (pre-pouring) of the electromagnetic induction heating cooker of the present invention,

Fig. 7 shows the embodiment after the pouring of the electromagnetic induction heating cooking pot of the present invention,

FIG. 8 is a schematic view showing an embodiment of the main bath for the electromagnetic induction heating cooking pot of the present invention,

Fig. 9 is a diagram showing the embodiment after the pouring of the electromagnetic induction heating cooking pot of the present invention,

10 shows the embodiment of the electromagnetic induction heating cooking pot of the present invention after completion of pouring,

DESCRIPTION OF THE REFERENCE NUMERALS

1: inner pot 2: bottom

3: metal wire mesh 4: hot plate

5: Aluminum body 6: Fixed type

7; Movable type 8:

9: Waste Piston 10: Electromagnetic Induction Heating Cooking Pot

11: die-cast mold 12: capper

13: Clearance part 14: Fixed mold

15: Mold in movable mold 16: Fixing tool

17: punching metal 18:

19: vacuum suction housing 20: vacuum suction housing

21: Vacuum pump 22:

23: Overflow section

[Industrial Applications]

The present invention relates to an electromagnetic induction heating cooker in which a heating member for a magnetic body and a non-magnetic aluminum body are closely coupled to each other in an inner pot and an electromagnetic induction heating cooking pot of an electromagnetic induction heating cooker, i.e., an inner pot, an electromagnetic cooker, An inner pot, an electromagnetic induction heating cooking pot, and a method of manufacturing the same, a metal wire mesh or a punching metal is fixed to a magnetic steel sheet SUS material or Fe material as a heating plate by brazing, A metal wire net or a punching metal is sandwiched between the heating plate and the aluminum body and the hot plate of the heating member is evacuated while casting aluminum molten aluminum at a high speed while being wound by an aluminum casting to be lightweight and good in adhesion strength and thermal conductivity , An internal pot for low-cost electromagnetic induction heating cookers with low heating deformation and high productivity, and electromagnetic induction And to propose a method of manufacturing a cooked pot.

[0003]

Conventionally, an inner pot and an electromagnetic induction heating cooking pot of an electromagnetic induction heating cooker, such as an inner pot of an electromagnetic cooker, an electromagnetic cooker, a cooking pot, and the like are generally manufactured by press molding a magnetic plate, In recent years, after the nonmagnetic aluminum is cast, a magnetic material member is sprayed to form a heating layer, which is a method of joining techniques. , An inner pot of an electromagnetic induction heating cooker, and a method of commercializing an electromagnetic induction heating cooking pot.

However, due to the fact that the magnetic material and the non-magnetic material member are different in the material composition, the thermal expansion coefficient is different, or due to the fact that fusion bonding by chemical reaction is difficult, spray adhesion strength of repeated cold and warm is required, A flat pot with a flat bottom surface in which a member having a different thermal expansion coefficient such as a member is adhered tightly has caused defects such as distortion (deformation) in the manufacturing process due to spraying or melting of the magnetic member in the nonmagnetic aluminum body.

In addition, since members having different coefficients of thermal expansion are tightly coupled with each other, there is a defect such as deformation of the pot bottom due to repeated use of heating or cooling during use, and design correspondence has been required in the shape and thickness of the nonmagnetic aluminum body.

[Problems to be solved by the invention]

Recently, an electromagnetic induction heating cooker for forming a heating layer by spraying a magnetic member on a non-magnetic aluminum body has appeared. However, due to the fact that a magnetic member and a non-magnetic aluminum body have many different materials with different coefficients of thermal expansion, Defects such as occurrence of distortions in the manufacturing process and defective products or defects such as occurrence of deformation of the electromagnetic induction heating cooker inner pot or electromagnetic induction heating cooking pot by repetition of heating or cooling when using the electromagnetic induction heating cooker .

In the inner pot or the electromagnetic induction heating cooking pot of the electromagnetic induction heating cooker, the reliability of the close bonding strength between the magnetic metal member and the nonmagnetic aluminum body due to repetition of heating and cooling is required. However, The manufacturing quality control is important, and the productivity is deteriorated and the manufacturing cost is increased.

[MEANS FOR SOLVING THE PROBLEMS]

In the method of manufacturing the inner pot or the electromagnetic induction heating cooking pot of the conventional electromagnetic induction heating cooker, the magnetic metal plate material is usually press-formed. However, the magnetic metal plate material is not press- The inner pot or the electromagnetic induction heating cooking pot of an electromagnetic induction heating cooker has been increased in number, but the product is heavy or expensive, so there is a problem that the inner pot of the electromagnetic induction heating cooker The metal wire mesh 3 or the punching metal 17 is soldered to the SUS material or the Fe material of the magnetic steel sheet as the heating plate 4 on the bottom surface 2 of the electromagnetic induction heating cooking pot 10 or the electromagnetic induction heating cooking pot 10, The heating plate 4 of the heating member and the metal body 3 or the punching metal 17 brazed to the aluminum body 5 are sandwiched between the heating plate 4 and the aluminum body 5, Without causing deformation by to wrap around the cast as a cast, no fouling the exterior, and also allows a weight reduction can be achieved, the electromagnetic induction heating cooking appointed inner pot (1) and the electromagnetic induction heating cooking pot (10).

Further, since the electromagnetic induction heating cooker for forming the heating layer by spraying the magnetic body member on the aluminum body has many materials having different thermal expansion coefficients from the sprayed magnetic body member and the non-magnetic aluminum body, deformation occurs in the manufacturing process, It is possible to prevent defects such as peeling of the sprayed magnetic member due to repetition of heating or cooling of the electromagnetic induction heating cooker 10 or the like in the electromagnetic induction heating cooker or the bottom surface 2 of the electromagnetic induction heating cooking pot 10 The metal wire net 3 or the punching metal 17 is cast by being cast in an aluminum casting so as to be sandwiched between the heating plate 4 made of SUS material or Fe and the aluminum body 5 so as to be deformed by heating, The deformation of the pot (1) or the electromagnetic induction heating cooking pot (10) will be completely eliminated.

In addition, the inner pot or the electromagnetic induction heating cooking pot of the electromagnetic induction heating cooker is required to have reliability of the close bonding strength between the magnetic member and the nonmagnetic aluminum body due to repetition of heating and cooling, and it is difficult to melt- In view of the fact, manufacturing quality control is important. In view of such a point, there is a problem of lowering the productivity and increasing the production cost. However, in the casting method such as winding the magnetic material heating layer into the non- The manufacturing ratio was lowered, and the reliability of the close bonding strength was also increased.

The metal wire netting 3 or the punching metal 17 is placed on the heating plate 4 made of SUS material or Fe on the bottom surface 2 of the inner pot 10 of the electromagnetic induction heating cooker or the electromagnetic induction heating cooking pot 10, And is then heated or press molded into a heating member and the heating plate 4 of the heating member is wound with a molten aluminum casting so as to sandwich the metal wire net 3 or the punching metal 17 brazed to the aluminum body (1) and an electromagnetic induction heating cooking pot (10) for casting a metal wire net (3) or a punching metal (17) on a heating plate (4) made of SUS material or Fe The heat plate 4 is fixed to the concave portion 18 by inserting it into the concave portion 18 in the cavity 12 of the die casting mold 11 Thereafter, molten aluminum was cast at high speed and wound into a casting, A plurality of vacuum suction casters 19 are fixedly attached to the heating plate 4 so that the heating plate 4 inserted and fixed to the recess 18 in the cavity 12 of the mold 11 is not missed, The inside of the electromagnetic induction heating cooker in which the molten aluminum is injected at a high speed and the metal wire net 3 or the punching metal 17 is wound in the casting while the heating plate 4 of the heating member is vacuum- The present invention solves the above problems by preventing the heating plate (4) from being deflected by a manufacturing method of casting the pot (1) or the electromagnetic induction heating cooking pot (10). It has a good thermal efficiency, This is a technique for manufacturing an inner pot (1) or an electromagnetic induction heating cooking pot (10) of a low-cost electromagnetic induction heating cooker.

As a concrete manufacturing method, a metal wire netting 3 or a punching metal 17 as a heating member is soldered to the cavity 12 of the die casting die 11 for casting the aluminum body 5, The molten aluminum is adhered to the gap portion 13 formed between the fixed die 6 and the fixed die 6 and the movable die 7 held between the fixed die 6 and the movable die 15, The metal wire 3 or the punching metal 17 is wound with a molten aluminum casting together with the heating plate 4 of the SUS material or the SP material by high speed injection using the injection piston 9 from the pouring gate 8 And the aluminum body 5 and the heating plate 4 made of the SUS material or the SP material fixed to the metal wire netting 3 or the punching metal 17 are tightly bonded.

An SUS material obtained by brazing a metal wire net 3 or a punching metal 17 as a heating member or a heating plate 4 made of SP is placed in the cavity 12 of the die casting die 11 for casting the aluminum body 5 The end portion of the heating plate 4 is sealed to the stationary inner mold 14 as the seal portion 22 so that the heating plate 4 is not scratched when casting, The metal mold 21 is driven to vacuum and sucked through the vacuum suction groove 20 and the vacuum suction hole 19 or as shown in FIG. 5, the recessed portion for fixing the heating plate 4 to the fixed inner mold 14 And the heating plate 4 is not deflected when the heating plate 4 is fixed and cast.

An SUS material as a heating member or a SUS material as a heating member or an SUS material or an SP material heated by fixing a metal wire mesh 3 of Fe as a heating member is fixed in a cavity 12 of a die casting mold 110, The magnetic metal wire net 3 fixed in the bottom 12 is cast together with the SUS material or the SP heating plate 4 so as to be wound around the inner pot 1 and the electromagnetic induction heating cooking pot 10 of the electromagnetic induction heating cooker, .

Since the magnetic material uses not only the magnetic metal wire net 3 but also the heating plate 4 made of SUS material or SP material as the heating material, the metal wire net 3 can be selected as a wire mesh or mesh The heating plate 4 of the SUS material or the SP material is inserted into the inner pot 1 of the electromagnetic induction heating cooker and the electromagnetic induction heating cooking pot 10 ) Bottom surface.

[Action]

As shown in the cross-sectional view of the inner pot (1) of the electromagnetic induction heating cooker of FIG. 1 or the electromagnetic induction heating cooking pot (10) of the present invention, Similarly, the aluminum main body 5 is made of a non-magnetic material such as aluminum for the purpose of thermal conduction and light weight. As shown in the sectional view of the inner pot 1 of the electromagnetic induction heating cooker of FIG. 2, The end portion of the heating plate 4 made of SP is wrapped by the casting and the metal wire net 3 or the punching metal 17 is fixed to the heating plate 4 made of SUS material or SP by brazing, And the metal wire net 3 or the punching metal 17 of the heating member is connected to the inner pot 1 and the bottom 2 of the electromagnetic induction heating cooker, ), And is subjected to electromagnetic induction heating for cooking. Since the heating plate 4 made of SUS material or SP material is fixed and the metal wire net 3 made of SUS material or Fe material as the heating member is fixed by soldering, the thermal efficiency is also improved.

When the bottom surface is a curved surface or spherical shape as in an inner pot of an electromagnetic cooker, the metal wire net 3 or the punching metal 17 is fixed to the heating plate 4 of the SUS material or the SP material by soldering, And the metal wire net 3 or the punching metal 17 is fixed to the surface of the die casting die 11 on which the curved surface or the spherical surface is formed The molten aluminum is melt-injected in a state in which the heating plate 4 of the SUS material or the SP material is tightly fixed, and the metal wire net 1 as the aluminum body 5 is cast in the casting along with the heating plate 4, will be.

4 is a sectional view of the apparatus for manufacturing the inner pot 1 of the electromagnetic induction heating cooker according to the embodiment and FIG. 5 is a sectional view of the apparatus for manufacturing the electromagnetic induction heating cooking pot 10 as an embodiment, The metal mold 14 or the punching metal 17 is fixed to the cavity 12 of the stationary mold 14 by soldering and the SUS material or the SP heating plate The molten aluminum is injected from the pouring gate 8 into the gap portion 13 formed between the fixed die 14 and the movable die 15 by using the injection piston 9, So that the metal wire netting (3) is not deflected when casting.

The molten aluminum is poured in the pouring gate 8 using the injection piston 9 so that pouring is completely performed by the injection piston 9 in order to prevent the generation of pores in casting And an overflow portion 23 is provided on the opposite side of the pouring gate 8 in order to smooth the flow of the hot water.

The metal wire mesh 3 is fixed to the heating plate 4 made of SUS material or SP material by soldering and the heating plate 4 is fixed to the cavity 12 of the die casting die 11, So that the metal wire net 3 or the punching metal 17 is prevented from being deflected by the flow of the molten metal by the pressure of the molten metal flow and is wound together with the heating plate 4 of the SUS material or the SP material, The metal wire netting 3 is completely fixed together with the heating plate 4 because the metal wire netting 3 is wrapped by the casting such that aluminum is melted and the punching metal 17 is enveloped.

Experiments were carried out using a Fe mesh of Ø0.4 × pitch of 1.7 m / m, a 0.4 plate of SUS 430, and a 0.6 plate of SP. The temperature of the aluminum body increased with time elapsed . It was found that the Fe mesh of Ø0.4 × pitch of 1.7 m / m was better on average, and the SUS430 0.4 plate had a dull rising temperature.

[Effects of the Invention]

The present invention is characterized in that the metal wire netting 3 or the metal wire netting 3 as the heating member is provided on the heating plate 4 at the bottom 2 of the inner pot 1 and the electromagnetic induction heating cooking pot 10 of the electromagnetic induction heating cooker, The punching metal 170 is fixed by soldering and the metal wire net 3 or the punching metal 17 as the heating member is sandwiched between the heating plate 4 and the aluminum body 5 of the SUS material or the SP material, The inner pot (1) and the electromagnetic induction heating cooking pot (10) of the electromagnetic induction heating cooker are wound so as to be lightweight, have good thermal efficiency, can increase the bonding strength, The inner pot 1 and the electromagnetic induction heating cooking pot 10 of the low-cost electromagnetic induction heating cooker can be provided while keeping the appearance of the bottom 2 beautiful.

Since the metal wire net 3 or the punching metal 17 as the heating member is fixed to the heating plate 4 by brazing and the heating plate 4 is fixed to the cavity 12 of the die casting mold 11, It is possible to prevent the SUS material or the Fe heating plate 4, which is fixed by soldering the metal wire net 3 or the punching metal 17, with the pressure of the flow of the molten metal in the casting of one aluminum, Since the metal wire net 3 or the molten aluminum punched metal 17 is wrapped with the heating plate 4 made of the SUS material or the SP material together with the heating plate 4 of the material and wound with the casting, The wire netting 3 or the punching metal 17 can be completely fixed together with the heating plate 4. [

The metal wire net 3 or the punching metal 17 fixed by soldering together with the heating plate 4 made of SUS material or SP material is used as a heating member and the metal wire 3 or the punching metal 17 is cast by the aluminum body 2 Therefore, even if the product made by the present invention is repeatedly used by cold and heat, the bottom of the pot can be deformed to be a defective product, and peeling or peeling of the metal wire netting 3 or the punching metal 17 can be prevented.

In addition, when an electromagnetic induction heating cooker is manufactured by closely bonding a member having a different thermal expansion coefficient by spraying or injecting a magnetic body member to an aluminum body which has conventionally been performed conventionally, deformation occurs in the manufacturing process, However, in the manufacturing method according to the present invention, deformation in the manufacturing process is not caused.

Further, since the magnetic material is a heating member made of a metal wire net 3 which is fixed to the heating plate 4 made of SUS material or SP by soldering, the magnetic material can be used for the inner pot 1 and the electromagnetic induction heating cooking pot 10 of the electromagnetic induction heating cooker The thickness of the heating plate 4 and the size of the wire diameter of the metal wire mesh 3 are selected according to the thickness of the inner pot 1 and the electromagnetic induction heating cooking pot 10 of the electromagnetic induction heating cooker, By selecting dense or thinner, the defective products can be further blocked, and it is easy to cope with the design for preventing thermal deformation and the like as well as improving thermal efficiency and adhesion strength.

Claims (2)

A metal wire mesh or a punching metal is brazed to the SUS material or the Fe material of the magnetic steel sheet as the heating plate at the bottom surface of the inner pot for the electromagnetic induction heating cooker and the electromagnetic induction heating cooking pot, , And a casting of aluminum casting is carried out so as to sandwich a metal wire mesh or a punching metal brazed to the heating plate of the heating member and the aluminum body, and the electromagnetic induction heating cooking pot for the electromagnetic induction heating cooker. A metal wire mesh or a punching metal is soldered to the SUS material or the Fe material of the magnetic steel sheet as the heating plate on the bottom surface of the inner pot of the electromagnetic induction heating cooker and the electromagnetic induction heating cooking pot, A method of manufacturing an inner pot for an electromagnetic induction heating cooker and an electromagnetic induction heating cooking pot comprising the steps of casting aluminum casting to sandwich a metal wire mesh or punching metal brazed to a heating plate of a heating member and an aluminum body, A metal wire mesh or a punching metal is fixed to the SUS material or the Fe material by brazing and then press-formed into a heating member, the heating member is inserted into the cavity of the die casting mold, and the heating plate of the heating member is vacuum- A plurality of vacuum suction holes are provided in a fixed shape so that the heating plate of the heating member is evacuated, A high-speed injection and method for producing a die-casting mold is fixed to the brazing filler metal wire mesh or punching metal casting characterized in that, as winding as a cast with an electromagnetic induction heating plate heating cooking appointed inner pot and an electromagnetic induction heating cooking pot titanium.