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KR100745028B1 - Cookware for Induction Heater and Manufacturing Method Thereof - Google Patents

Cookware for Induction Heater and Manufacturing Method Thereof Download PDF

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KR100745028B1
KR100745028B1 KR1020050122355A KR20050122355A KR100745028B1 KR 100745028 B1 KR100745028 B1 KR 100745028B1 KR 1020050122355 A KR1020050122355 A KR 1020050122355A KR 20050122355 A KR20050122355 A KR 20050122355A KR 100745028 B1 KR100745028 B1 KR 100745028B1
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South Korea
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hole
metal plate
cookware
induction heating
magnetic metal
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KR20060101198A (en
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김남용
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김남용
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/002Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/02Cooking-vessels with enlarged heating surfaces
    • A47J27/022Cooking-vessels with enlarged heating surfaces with enlarged bottom
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00Making hollow objects
    • B21D51/16Making hollow objects characterised by the use of the objects
    • B21D51/18Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
    • B21D51/22Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like pots, e.g. for cooking
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00Receptacles
    • Y10S220/912Cookware, i.e. pots and pans

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Cookers (AREA)

Abstract

본 발명은 유도가열 중 조리기구의 바닥 변형을 최소화시켜 높은 유도가열 효율 및 본체로부터 자성체 금속판의 견고한 결합으로 탈착이 되지 않게 하는 것이다.The present invention is to minimize the deformation of the bottom of the cookware during induction heating to prevent the high induction heating efficiency and the desorption by the rigid coupling of the magnetic metal plate from the body.

이에 따른 본 발명은 내부에 조리대상물 수용공간을 갖도록 성형된 알루미늄합금 조리기구 본체와 상기 본체의 바닥면에 자성체 금속판을 포함하는 유도가열용 조리기구에 있어서, 상기 자성체 금속판의 중심부에 소정 직경의 통공(2)이 구비되고, 통공 주위에는 외곽방향으로 소정길이를 갖는 외향장공(3)이 형성되거나 또는 통공쪽으로 소정 길이를 갖도록 형성되는 내향장공(4)이 형성되고, 상협 하광의 형태로 상부로 돌출된 돌기(5)가 본체의 바닥면에 강제 끼움되고, 상기 돌기에 따라 형성된 자성체 금속판의 구멍(7)에 상기 본체의 알루미늄이 함몰되어 이루어지며, 상기 금속판의 가장자리가 편평하게 형성된 것을 특징으로 하는 유도가열용 조리기구로 이루어짐과 함께, 이를 제조함에 있어서는 상기 자성체 금속판에 프레스 공정을 통해 통공(2), 외향장공(3), 내향장공(4)을 형성하고, 상협 하광이 되게 상부로 돌출되게 타발하여서 된 돌기(5)가 본체 바닥면에 인입됨과 동시에 타발에 따라 형성된 구멍(7)에 알루미늄이 함몰되게 함을 특징으로 한다.Accordingly, the present invention is an aluminum alloy cookware body molded to have a cooking object accommodating space therein and induction heating cookware comprising a magnetic metal plate on the bottom surface of the body, the through hole of a predetermined diameter in the center of the magnetic metal plate (2) is provided, the outward long hole (3) is formed around the through hole having a predetermined length in the outward direction, or the inward long hole (4) formed to have a predetermined length toward the through hole is formed, the upper side in the form of light down The protruding protrusion 5 is forcibly fitted to the bottom surface of the main body, and the aluminum of the main body is recessed in the hole 7 of the magnetic metal plate formed according to the protrusion, and the edge of the metal plate is formed flat. In addition to the cookware for induction heating to make, in the manufacture of the through-hole (2) through the pressing process to the magnetic metal plate, The outward long hole 3, the inward long hole 4 are formed, and the projection 5 formed by being punched out to protrude to the upper side becomes the lower side of the main body, and the aluminum is recessed in the hole 7 formed according to the punch at the same time. It is characterized by.

유도가열. 조리기구 Induction heating. Cookware

Description

유도가열기용 조리기구 및 그 제조방법{Cookware for induction heating and it's manufacturing method}Cookware for induction heater and its manufacturing method {Cookware for induction heating and it's manufacturing method}

도 1a 및 도 1b는 본 발명의 조리기구 본체와 발열판의 분리 상태도Figure 1a and 1b is a state of separation of the cooking appliance body and the heating plate of the present invention

도 2는 타 실시예를 나타낸 발열판의 구조도2 is a structural diagram of a heating plate showing another embodiment

도 3은 상협 하광 형태의 돌기를 갖는 자성체 금속판이 본체에 압입된 결합 상태도3 is a coupling state in which a magnetic metal plate having protrusions in the form of upper and lower light is pressed into the main body;

도면의 주요부분에 대한 부호 설명Explanation of symbols for main parts of the drawings

1: 본체 2: 통공 3: 외향장공 4: 내향장공1: main body 2: through hole 3: outward worker 4: inward worker

5: 돌기 6: 자성체 금속판 7: 구멍5: turning 6: magnetic metal sheet 7: hole

본 발명은 유도가열용 조리기구 및 그 제조방법에 관한 것으로, 보다 상세하게는 유도가열 중 조리기구 바닥의 변형을 최소화함과 함께 자성체 금속판의 결합을 보다 견고하게 할 수 있도록 한 것이다.The present invention relates to a cookware for induction heating and a method for manufacturing the same, and more particularly, to minimize the deformation of the bottom of the cookware during induction heating and to more firmly bond the magnetic metal plate.

일반적으로 유도가열기는 금속과 같은 도전물질에 고주파자장을 가할 때 도체내에 생기는 맴돌이 전류에 의하여 물질을 가열하는 유도가열 원리를 이용한 기기로서 그 이용분야가 점점 넓어지고 있다.In general, the induction heater is a device using the principle of induction heating to heat the material by the eddy current generated in the conductor when applying a high frequency magnetic field to a conductive material such as metal, the field of application is getting wider.

이러한 유도가열기에 이용되는 조리기구는 솥이나 냄비, 주전자, 프라이팬 등이 있으며, 상기한 조리기구는 유도가열시의 평탄한 가열면에 놓인 상태에서 유도 가열된다.Cooking utensils used in such an induction heater includes a pot, a pot, a kettle, a frying pan, and the like. The cooking utensils are induction heated in a state of being placed on a flat heating surface during induction heating.

이 유도가열용 조리기구는 알루미늄합금으로 된 몸체 바닥에 몸체와 다른 철판(또는 강판) 또는 스테인레스강판과 같은 자성체금속을 주조 또는 열간단조와 같은 방법으로 결합하고 있다.The cookware for induction heating combines a body and a magnetic metal such as a steel plate (or steel plate) or a stainless steel plate on the bottom of an aluminum alloy body by casting or hot forging.

이들 조리기구는 자성체 금속판의 형상 및 접합 결합방식 등에 따라 조리기구의 바닥 변형도 및 유도가열 효율이 다르다. 자성체인 금속판의 일반적인 형상은 원형으로 되어 있으며, 이 원형의 자성판을 알루미늄합금 본체와 결합시키기 위한 방법에 있어서 이종금속 접합의 경우는 적절한 열간단조 및 열처리하여 주조하는 반면, 이종금속결합의 경우는 원형의 자성판에 상부를 향해 직각으로 돌기가 형성 된 구멍이 다수개 구비되어 있으며, 이런 형상의 돌기를 상온에서 프레스로 강제 압입하여 본체에 결합시키고 있다.These cooking utensils differ in the bottom deformation degree and the induction heating efficiency of the cooking utensil according to the shape of the magnetic metal plate and the bonding method. The general shape of a magnetic plate of magnetic material is circular, and in the method of joining the circular magnetic plate with an aluminum alloy body, in case of dissimilar metal bonding, casting is performed by appropriate hot forging and heat treatment, while in case of dissimilar metal bonding. A circular magnetic plate is provided with a plurality of holes formed with projections at right angles to the upper portion, and these projections are forcibly pressed into the main body by press at room temperature.

상기와 같은 구조 및 방법에 따라 이루어진 원판의 형상에서는 유도가열 중 선팽창계수가 큰 알루미늄합금 본체바닥의 팽창이 커지고 선팽창계수가 낮은 철판 또는 스테인레스강판(STS430, 410)은 상대적으로 팽창이 적어 알루미늄합금 본체 바닥이 솟아오르는 현상이 발생하여 유도가열용 조리기구로는 불안정하고 유도가열 효율이 낮아지는 결점이 있다.In the shape of the disk made according to the structure and method as described above, the expansion of the bottom of the aluminum alloy body having a large coefficient of linear expansion during induction heating, and the steel sheet or stainless steel sheet having a low coefficient of linear expansion (STS430, 410) is relatively small expansion aluminum alloy body As the bottom rises, induction heating cookware is unstable and the induction heating efficiency is low.

또한 이 유도가열 조리기구는 다른 기열기 예로서 가스렌지에서 사용시 과열 이 되면 원판 형상의 자성체인 금속판이 중심부부터 뒤틀림이 일어나면서 심한 변형이 일어나거나 심한 경우는 직각 돌기 형상을 갖는 자성체 금속판이 바닥과의 결합이 유지되지 못하고 탈착이 생기는 등의 결점이 있다.In addition, this induction heating cooker is a different type of heater, for example, when used in a gas stove, when the plate-shaped magnetic plate of the metal plate is warped from the center, the severe deformation occurs, or in the severe case of the magnetic metal plate having a right angled protrusion shape and There is a drawback that the bond cannot be maintained and desorption occurs.

본 발명은 상기한 종래의 문제점을 해결하기 위한 것으로, 유도가열 중 조리기구의 바닥 변형을 최소화시켜 높은 유도가열 효율 및 본체로부터 자성체 금속판의 견고한 결합으로 탈착이 생기는 문제점 등을 개선하는데 그 목적이 있다.The present invention is to solve the above-mentioned problems, and to minimize the deformation of the bottom of the cookware during induction heating to improve the induction heating efficiency and problems such as desorption due to the rigid coupling of the magnetic metal plate from the body. .

상기한 목적을 달성하기 위한 본 발명은 내부에 조리대상물 수용공간을 갖도록 성형된 알루미늄합금 조리기구 본체와 상기 본체의 바닥면에 자성체 금속판을 포함하는 유도가열용 조리기구에 있어서, 상기 자성체 금속판의 중심부에 소정 직경의 통공이 구비되고, 통공 주위에는 외곽방향으로 소정길이를 갖는 외향장공이 형성되거나 또는 통공쪽으로 소정 길이를 갖도록 형성되는 내향장공이 형성되거나, 또는 상기한 외향장공과 내향장공이 모두 형성될 수 있으며, 철판(또는 강판), 스테인레스강판과 같은 자성체 금속판은 상협 하광의 형태로 상부로 돌출됨에 따라 구멍의 테두리에 상부로 형성된 돌기가 강압프레스에 따라 본체와 견고하게 결합 되고 열팽창완화를 위하여 상기 금속판의 가장자리가 편평하게 형성된 구조로 이루어진다.The present invention for achieving the above object is an aluminum alloy cookware body molded to have a cooking object receiving space therein and induction heating cookware comprising a magnetic metal plate on the bottom surface of the main body, the center of the magnetic metal plate It is provided with a predetermined diameter hole in the outer periphery, the outward long hole having a predetermined length in the outer direction is formed around the through hole or an inward long hole formed to have a predetermined length toward the through hole is formed, or both the outward long hole and the inward long hole are formed As the magnetic metal plate such as iron plate (or steel plate) and stainless steel plate protrudes upward in the form of light beam downlight, a protrusion formed at the upper edge of the hole is firmly combined with the main body according to the pressing force and for thermal expansion relaxation. The edge of the metal plate is formed in a flat structure.

도 1a 및 도 1b는 본 발명의 실시예 1로서 조리기구 본체와 발열판의 분리 상태도를 나타낸 것이고, 도 2는 타 실시예2를 나타낸 발열판의 구조도이고, 도 3은 상협 하광의 형태를 갖는 상부로 돌출된 돌기를 갖는 자성체 금속판이 본체에 압입된 결합 상태도를 나타낸 것으로 이에 따라 설명한다.1A and 1B are diagrams showing a state of separation between a main body and a heating plate according to Embodiment 1 of the present invention, FIG. 2 is a structural diagram of a heating plate showing another embodiment 2, and FIG. The magnetic state metal plate having the protruding protrusions is shown as a coupling state diagram pressed into the main body and will be described accordingly.

도 1a 및 도 1b에 나타내 바와 같이, 내부에 조리대상물 수용공간을 갖도록 성형되는 알루미늄합금으로 된 본체(1)와 상기 본체 바닥면에 결합되며 중심부에 소정 직경의 통공(2)이 구비되고, 상기 통공 주위에는 외곽방향으로 소정 길이를 갖는 외향장공(3)이 구비되거나, 통공쪽으로 소정 길이를 갖는 내향장공(4)(내향장공만이 형성된 도면은 별도로 도시하지 않음)이 형성되거나, 도 2에 나타낸 바와 같이 상기한 외향장공(3)과 내향장공(4)이 모두 형성될 수 있으며, 또한 상기한 구조를 갖는 자성체 금속판이 본체(1)와 결합되도록 상협 하광의 형태로 상부로 돌출되도록 프레스 등을 이용하여 타발시킴에 따라 구멍의 테두리가 형성됨과 함께 상부로 돌출된 돌기(5)가 형성되고, 상기 돌기를 갖는 자성체 금속판(6)을 본체 바닥면에 맞대어 프레스로 강제 압입함에 따라 상협 하광을 갖는 돌기에 이웃하는 구멍(7)에 알루미늄이 인입되어 견고한 결합이 이루어진다.1A and 1B, a main body 1 made of an aluminum alloy molded to have a cooking object accommodation space therein and a through hole 2 having a predetermined diameter in a central portion thereof are coupled to the bottom surface of the main body. The outward long hole 3 having a predetermined length in the outward direction is provided around the through hole, or the inward long hole 4 having a predetermined length toward the through hole is formed (the drawing in which only the inward long hole is formed is not shown separately), or in FIG. 2. As shown, both the outwardly facing long hole 3 and the inwardly long facing hole 4 may be formed, and the magnetic metal plate having the above-described structure may be pressed to protrude upward in the form of upper and lower light so as to be combined with the main body 1. As a result of the punching, the edge of the hole is formed and the protrusion 5 protruding upward is formed, and the magnetic metal plate 6 having the protrusion is pressed against the bottom of the main body by a press force. As it enters, aluminum is introduced into the hole 7 adjacent to the projection having the upper and lower light beams, thereby forming a firm coupling.

이와 같이 구성되는 본 실시예에 따른 유도가열용 조리기구를 제조함에 있어서는 먼저, 알루미늄합금판으로 프레스 성형하여 바닥면을 갖는 조리기구 본체(1)를 성형하거나, 알루미늄합금주괴로 용해, 주조 가공하여 바닥면을 갖는 본체를 성형하게 된다.In manufacturing the cookware for induction heating according to the present embodiment configured as described above, first, the cookware main body 1 having a bottom surface is formed by press molding with an aluminum alloy plate, or melted and cast into an aluminum alloy ingot. The main body having the bottom surface is molded.

그리고 이와는 별도로 철판 또는 스테인레스강판으로 이루어진 자성체 금속판을 준비하여 중심부에 소정 직경의 통공(2)을 형성하고, 통공주위에 통공(2)과 요통되며 외곽방향으로 소정길이를 갖는 복수개의 외향장공(3) 또는 내향장공(4)을 형성하거나, 상기한 외향장공(3)과 내향장공(4)을 모두 형성한다.In addition, a magnetic metal plate made of a steel plate or a stainless steel plate is separately prepared to form a through-hole 2 having a predetermined diameter in the center, and a plurality of outwardly-holes having a predetermined length in the outward direction with the through-hole 2 around the through-hole. ) Or inwardly facing holes 4, or both outwardly facing holes 3 and inwardly facing holes 4 are formed.

상기 통공(2)과 내향장공(3) 및 외향장공(4)은 프레스 등의 공지의 가공방법으로 동시에 혹은 순차적으로 형성될 수 있다.The through hole 2, the inwardly facing hole 3 and the outwardly facing hole 4 may be formed simultaneously or sequentially by a known processing method such as a press.

상기한 구조에서 자성체 금속판에 형성된 통공(2)과 외향장공(3) 또는 내향장공(4)이 열변형에 대해 완충능력을 갖게 됨에 따라 조리기구의 만곡향을 감쇄시키는 작용을 한다.In the above structure, the through hole 2 and the outward long hole 3 or the inward long hole 4 formed in the magnetic metal plate have a buffering capacity against thermal deformation, thereby reducing the curvature of the cookware.

즉, 통공(2)과 외향장공(3)영역에서는 본체 바닥면이 정상적으로 늘어나면서 자성체 금속판(6)쪽으로 휘려는 힘에 대해 저항하는 힘이 발생하게 된다.
또한, 자성체 금속판의 가장자리가 편평한 상태이므로 본체 바닥면에 대한 열변형에 따른 완충능력은 더욱 향상된다.
That is, in the through hole 2 and the outward long hole 3 region, the bottom surface of the main body normally extends, and a force that resists the bending force toward the magnetic metal plate 6 is generated.
In addition, since the edge of the magnetic metal plate is flat, the buffering capacity due to thermal deformation of the bottom surface of the main body is further improved.

이어서 상기 돌기(5)를 갖는 자성체 금속판(6)를 본체(1)의 바닥면에 맞대어 프레스로 프레싱하면 돌기(5)가 알루미늄의 본체(1)에 강제로 들어감과 함께 본체의 알루미늄이 구멍(7)에 강제로 끼움된다.Subsequently, when the magnetic metal plate 6 having the projections 5 is pressed against the bottom surface of the main body 1 by pressing, the projections 5 are forced into the main body 1 of aluminum and the aluminum of the main body is formed by a hole ( 7) is forcibly fitted.

즉, 스테인레스강판은 강도는 알루미늄에 비해 월등이 높기 때문에 돌기를 갖는 스테인레스를 강압적으로 프레싱하면 돌기가 본체에 들어감과 함께 알루미늄은 자성체 금속판의 구멍(7)에 강제 끼움이 이루어짐에 따라 조리기구의 과열이 진행된다 하여도 상협 하광의 형태를 갖는 돌기(5)에 의거 쉽게 탈착되지 않는다.In other words, stainless steel plate has higher strength than aluminum, so pressing forcefully the stainless steel with protrusions causes the projections to enter the body and the aluminum is forced into the holes 7 of the magnetic metal plate. Even if this advances, it is not easy to detach | desorb based on the protrusion 5 which has a form of mutual light lowering.

상기와 같이 구멍(7)에 강제 끼움된 알루미늄은 단순결합이 아니라 상협 하광을 갖는 돌기(5)와 이웃한 결합이기 때문에 과열이 진행된다 하여도 종래구조에서 처럼 탈착되지 않는다.As described above, the aluminum forcedly inserted into the hole 7 is not a simple bond but a neighbor adjacent to the protrusion 5 having the upper and lower beams, so that even if overheating proceeds, the aluminum is not detached.

이하 본 발명의 실시예에 따라 설명한다.Hereinafter will be described according to an embodiment of the present invention.

알루미늄합금판으로 프레스 성형하여 조리기구 본체(1)를 만들었다. 그리고 도 2와 같은 형상을 갖는 자성체인 스테인레스강판의 금속판을 프레스 가공하였다.The cookware main body 1 was made by press-molding with the aluminum alloy plate. And the metal plate of the stainless steel plate which is a magnetic body which has a shape like FIG. 2 was press-processed.

이어서 상기 금속판을 유압프레스금형에 넣고 그 위에 기 제작된 본체(1)를 얹어놓고 유압프레스로 강제 압입시켰다. 상기와 같이 압입시킴에 따라 상협 하광 형태를 이루는 다수의 돌기(5)가 본체(1)바닥에 인입됨과 함께 본체의 알루미늄이 구멍(7)에 들어와 함몰하게 된다.Subsequently, the metal plate was placed in a hydraulic press mold, and the prefabricated main body 1 was placed thereon and forcedly press-fitted into the hydraulic press. As described above, the plurality of protrusions 5 forming the upper and lower light beams are introduced into the bottom of the main body 1 while the aluminum of the main body enters the hole 7 and sinks.

이후 조리기구에 불소수지 코팅을 할 때 400℃ 이상의 가열에 의해 알루미눔합금 본체와 자성체인 금속판의 돌기와의 결합이 상온에서 압입 결합된 상태보다 더 팽창된 상태로 결합되어 있다가 상온으로 되면 압입된 돌기와 알루미늄합금 본체와의 결합에 미세간극이 형성되어 있게 된다. 이 미세간극의효과로 인해 유도가열중 알루미늄합금 본체바닥과 자성체인 금속판의 선팽창율 차이를 더욱 감소시켜알루미눔합금 조리기구의 바닥 변형이 더욱 축소된다.After coating the cookware with fluorine resin, the bond between the aluminum alloy body and the projection of the magnetic metal plate is more expanded than the press-bonded state at room temperature by heating at 400 ° C. or higher. A fine gap is formed in the coupling between the protrusion and the aluminum alloy body. Due to the effect of this microgap, the difference in the linear expansion rate between the aluminum alloy body bottom and the magnetic metal plate during induction heating is further reduced, which further reduces the bottom deformation of the aluminum alloy cookware.

이후 알루미늄합금 조리기구 내면에 불소수지코팅하고, 외면에 내열성 페인트 도장을 한 후 손잡이 등을 부착하여 유도가열용 조리기구룰 제조하였다.After the fluorine resin coating on the inner surface of the aluminum alloy cookware, heat-resistant paint coating on the outer surface was attached to the handle to prepare a cookware for induction heating.

상기 알루미늄합금으로 된 조리기구의 본체 바닥의 두께는 3.2㎜∼4.5㎜로 구성한다. 3.2㎜이하에서는 유도가열중 자성체인 금속판의 변형을 충분히 억제시키지 못하여 바닥 변형이 크게되고, 4.5㎜이상에선 변형을 충분히 억제하나 중량이 무거워지고 경제적으로도 비효율적이다.The thickness of the bottom of the main body of the cookware made of the aluminum alloy is composed of 3.2 mm to 4.5 mm. Below 3.2mm, the deformation of the metal plate, which is a magnetic material during induction heating, is not sufficiently suppressed, and the bottom deformation is large. Above 4.5mm, the deformation is sufficiently suppressed, but the weight is heavy and economically inefficient.

그리고 자성체인 금속판의 두께는 0.4∼1㎜로 한다. 0.4㎜이항에서는 유도가열 효율이 낮고 1㎜ 이상에서는 고비용과 무거워지는 단점이 있다. 자성체인 금속판의 형상은 중앙에 직경10∼60㎜인 통공(2)을 구비한다. 통공이 40㎜이하인 경우는 가열중 바닥 변형이 커져 알루미늄합금 조리기구 본체 바닥의 중앙부가 1㎜이상 솟아오르며, 60㎜이상인 경우는 자성체 면적이 적어져 가열속도가 늦어진다.And the thickness of the metal plate which is a magnetic body shall be 0.4-1 mm. In 0.4 mm or less, induction heating efficiency is low, and in 1 mm or more, there are disadvantages of high cost and heavy weight. The shape of the metal plate, which is a magnetic body, is provided with a through hole 2 having a diameter of 10 to 60 mm in the center. If the hole is 40 mm or less, the bottom deformation during heating increases, and the center portion of the bottom of the aluminum alloy cookware rises by 1 mm or more, and when 60 mm or more, the magnetic body area decreases and the heating speed becomes slow.

상기와 같은 중앙 통공으로 일반 가스렌지에서 과열되어도 자성체인 금속판의 변형이 없고 자성체인 금속판이 알루미늄합금 본체바닥에서의 탈착이 일어나지 않는다.Even when overheated in a general gas stove with the above-described central hole, there is no deformation of the magnetic metal plate, and the magnetic metal plate does not desorb from the bottom of the aluminum alloy body.

한편 중앙통공과 연결된 외향장공(3)을 다수개 만들어준다. 외향장공의 폭은 3∼5㎜로 하고, 길이는 자성체금속판의 반지름에서 중앙통공 반지름을 제한 것의 65∼90%로 한다. 외향장공의 수는 6∼12개로 한다. 이 장공수가 너무 적으면 조리기구 바닥의 국부변형이 일어나고, 너무 많으면 자성체 면적이 적어져 가열속도가 늦어진다.On the other hand, it makes a plurality of outward long hole (3) connected to the central through hole. The width of the outward long hole is 3 to 5 mm, and the length is 65 to 90% of the limit of the central hole radius at the radius of the magnetic metal plate. The number of outward long holes is 6-12. Too small a number of long holes causes local deformation of the bottom of the cookware, and too much of it causes a decrease in the area of the magnetic body, resulting in a slow heating rate.

그리고 외향장공 사이에는 외주위에서 연결된 내향장공(4)이 구비된다. 내향장공의 폭은 3∼5㎜이고, 길이는 자성체금속판의 반지름에서 중앙통공 반지름을 제한 것의 60∼85%로 한다. 내향장공의 수는 외향장공의 수와 동일하게 할 수 있다.And between the outward long hole is provided with an inward long hole (4) connected from the outer periphery. The width of the inward facing hole is 3 to 5 mm and the length is 60 to 85% of the limit of the central hole radius at the radius of the magnetic metal plate. The number of inward holes may be equal to the number of outward holes.

외향장공과 내향장공 사이에 돌기(5)의 높이가 0.7∼1.2㎜이며, 직경이 2∼5㎜인 구멍(7)이 다수개 형성되어 있다.Between the outward long hole and the inward long hole, the height of the projection 5 is 0.7 to 1.2 mm, and a plurality of holes 7 having a diameter of 2 to 5 mm are formed.

이상의 구조에 따라 본 발명의 조리기구는 자성체인 금속판이 유도가열될 때에 조리기구 바닥 변형이 최소화되어 200℃에서 + -5℃로 바닥의 변형도를 최대로 감쇄시켜 바닥 변형의 만곡량을 바닥 지경의 0.5% 내로 유지할 수 있게 되어 높은 유도가열 효율 및 안정성을 갖추게 된다.According to the above structure, the cookware of the present invention minimizes the deformation of the bottom of the cookware when the induction heating of the magnetic plate is made of magnetic material. It can be maintained within 0.5% of the high induction heating efficiency and stability.

도한 유도가열 조리기구를 제조하는데 있어 상온에서 자성체인 금속판을 알 루미늄합금 본체에 결합함으로써 저렴한 생산비용으로 제조할 수 있다.In addition, in the manufacture of induction heating cookware can be manufactured at low production cost by combining a metal plate, which is a magnetic material at room temperature to the aluminum alloy body.

Claims (4)

내부에 조리대상물 수용공간을 갖도록 성형된 알루미늄합금 조리기구 본체와 상기 본체의 바닥면에 자성체 금속판을 포함하는 유도가열용 조리기구에 있어서,In the cookware for induction heating comprising an aluminum alloy cookware body molded to have a cooking object receiving space therein and a magnetic metal plate on the bottom surface of the body, 상기 자성체 금속판의 중심부에 소정 직경의 통공(2)이 구비되고, 통공(2) 주위에는 외곽방향으로 소정 길이를 갖는 외향장공(3)이 형성되거나 또는 통공쪽으로 소정 길이를 갖도록 형성되는 내향장공(4)이 형성되고, 상협 하광의 형태로 상부로 돌출된 돌기(5)가 본체의 바닥면에 강제 끼움되고, 상기 돌기에 따라 형성된 자성체 금속판의 구멍(7)에 상기 본체의 알루미늄이 함몰되며, 상기 금속판의 가장자리가 편평하게 형성된 것을 특징으로 하는 유도가열용 조리기구.An inward long hole (3) is provided at a central portion of the magnetic metal plate, and an outward long hole (3) is formed around the through hole (2) having a predetermined length in the outward direction or is formed to have a predetermined length toward the through hole ( 4) is formed, projections 5 protruding upward in the form of upper and lower beams are forcibly fitted to the bottom surface of the main body, and aluminum of the main body is recessed in the hole 7 of the magnetic metal plate formed according to the projections, Induction heating cooking apparatus, characterized in that the edge of the metal plate is formed flat. 제 1항에 있어서,The method of claim 1, 상기 자성체 금속판에 외향장공(3)과 내향장공(4)이 동시에 형성됨을 특징으로 하는 유도가열용 조리기구,Induction heating cooking utensils, characterized in that formed in the magnetic metal plate outward long hole (3) and inward long hole (4) at the same time, 알루미늄합금으로 프레스 성형하여 원형 바닥면을 갖는 조리기구 본체로 성형하거나, 알리미늄합금의 용해, 주조 가공하여 원형 바닥면을 갖는 조리기구 본체를 성형하는 과정과, 상기 조리기구 본체 바닥면에 유도가열을 위해 자성체 금속판을 결합하는 과정을 포함하는 유도가열용 조리기구 제조방법에 있어서,Forming a cookware main body having a circular bottom by pressing and molding the aluminum alloy into a cookware main body having a circular bottom, or melting and casting aluminum alloy, and induction heating on the bottom of the cookware main body. In the method of manufacturing a cookware for induction heating comprising a process of bonding a magnetic metal plate for, 상기 자성체 금속판에 프레스 성형을 통해 중심부에 소정 직경의 통공(2)과 통공 주위에 연통되며 외곽방향으로 소정길이를 갖는 복수개의 외향장공(3) 또는 외곽으로부터 내측방향으로 소정 길이를 갖는 복수개의 내향장공(4)이 형성되게 성형하는 과정과, 상기 복수개의 외향장공(3) 사이 또는 복수개의 내향장공(4) 사이에 상협 하광의 형태로 상부로 돌출되면서 구멍(7)이 형성되도록 타발하는 과정을 통하여 돌기(5)을 얻는 과정과, 상기 과정을 통하여 얻어진 자성체 금속판의 돌기(5)를 본체 바닥면에 맞대어 강압 프레스하여 돌기(5)가 본체 바닥면에 인입되게 함과 함께 본체의 알루미늄이 구멍(7)에 함몰되도록 함을 특징으로 하는 유도가열용 조리기구 제조방법.A plurality of inwardly long holes 3 having a predetermined length in the outer direction and communicating with the through hole 2 having a predetermined diameter at the center through press molding on the magnetic metal plate or having a predetermined length in the inward direction from the outside A process of forming the long hole 4 to be formed, and a process of punching the hole 7 to be formed while protruding upward in the form of a light beam between the plurality of outward long holes 3 or between the plurality of inward long holes 4. The process of obtaining the projections 5 through and pressing the projections 5 of the magnetic metal plate obtained through the process against the bottom of the main body to bring the projections 5 into the bottom of the main body and the aluminum of the main body Method for producing a cookware for induction heating, characterized in that to be recessed in the hole (7). 제 3항에 있어서,The method of claim 3, wherein 상기 자성체 금속판에 외향장공(3)과 내향장공(4)이 동시에 형성되도록 강압 프레싱 함을 특징으로 하는 유도가열용 조리기구의 제조방법.Method for producing a cookware for induction heating, characterized in that the pressing by pressing the outward long hole (3) and the inward long hole (4) formed on the magnetic metal plate at the same time.
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KR101022843B1 (en) * 2008-01-24 2011-03-17 (주)화인아트 Manufacturing method of cooking container for induction stove
KR100953370B1 (en) 2009-08-26 2010-04-20 임현우 Mold apparatus for forming cooking vessel using for induction range and the cooking vessel
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