KR0162347B1 - Method for making vessels of induction heater rice cooker - Google Patents
Method for making vessels of induction heater rice cookerInfo
- Publication number
- KR0162347B1 KR0162347B1 KR1019950012083A KR19950012083A KR0162347B1 KR 0162347 B1 KR0162347 B1 KR 0162347B1 KR 1019950012083 A KR1019950012083 A KR 1019950012083A KR 19950012083 A KR19950012083 A KR 19950012083A KR 0162347 B1 KR0162347 B1 KR 0162347B1
- Authority
- KR
- South Korea
- Prior art keywords
- induction heating
- ferromagnetic
- rice cooker
- coated
- coating container
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
본 발명은 유도가열 밥솥용 강자성체 코팅용기 제조방법에 관한 것으로, 알루미늄 내통 외벽면에 Ni 또는 Co 등과 같은 강자성체 금속이 상기 유도가열 밥솥의 가열코일이 장착되어 있는 부분에만 코팅되는 구조를 가지도록 강자성체 코팅용기를 형성함으로써 유도가열 밥솥용 내부 코팅용기를 저가로 제작할 수 있게 되며, 이로 인해 상기 내부 코팅용기를 적용한 유도가열 밥솥 또한 그 단가를 줄일 수 있게 되고, 유도가열 코일과 결합되는 부분만을 강자성체로 코팅함으로써 용기 자체의 중량을 줄일 수 있게 되어 사용상의 불편함을 개선할 수 있게 된다.The present invention relates to a method of manufacturing a ferromagnetic coating container for an induction heating rice cooker, wherein a ferromagnetic metal such as Ni or Co is coated on the outer wall surface of an aluminum inner cylinder to have a structure in which only the heating coil of the induction heating rice cooker is coated. By forming a container, it is possible to manufacture an inner coating container for an induction heating rice cooker at low cost. As a result, the induction heating rice cooker using the inner coating container can also be reduced in cost, and only the portion combined with the induction heating coil is coated with a ferromagnetic material. By doing so, it is possible to reduce the weight of the container itself, thereby improving the inconvenience in use.
Description
제1도는 종래 기술에 따른 유도가열 밥솥용 강자성체 코팅용기 형태를 도시한 것으로, 제1도의 (a)는 그 단면도, 제1도의 (b)는 제1도의 (a)의 A부분을 확대 도시한 요부단면도.1 is a view showing the form of a ferromagnetic coating container for an induction heating rice cooker according to the prior art, Figure 1 (a) is a cross-sectional view, Figure 1 (b) is an enlarged portion A of Figure 1 (a). Lumbar cross section.
제2도는 본 발명에 따른 유도가열 밥솥용 강자성체 코팅용기 형태를 도시한 단면도.Figure 2 is a cross-sectional view showing the form of the ferromagnetic coating container for induction heating rice cooker according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
100 : 알루미늄 내통 110 : 유도 가열코일100: aluminum inner cylinder 110: induction heating coil
120 : 강자성체120: ferromagnetic material
본 발명은 유도가열 밥솥용 강자성체 코팅용기 제조방법에 관한 것으로, 특히 알루미늄 용기 외벽면에 Ni 또는 Co 등의 강자성체 물질을 코팅한 유도가열 밥솥용 강자성체 코팅용기 제작방법에 관한 것이다.The present invention relates to a method for manufacturing a ferromagnetic coating container for an induction heating rice cooker, and more particularly, to a method for manufacturing a ferromagnetic coating container for an induction heating rice cooker coated with a ferromagnetic material such as Ni or Co on an outer wall of an aluminum container.
종래의 유도가열 밥솥(induction heating-JAR)에서 사용되는 강자성체 코팅용기는 일반적으로 제1도의 (a) 및 제1도의 (b)에 도시된 단면도 및 그 요부단면도에서 알 수 있듯이, 알루미늄 내통(20)의 내벽면에는 불소수지(40)가 코팅되고, 그 외벽면에는 고가의 클래드(clad) 금속인 강자성체 스테인레스430(30)이 클래드 방식으로 접합되도록 구성되어, 유도가열 밥솥내에 장착된 유도가열 코일(10)에 의해 상기 스테인레스430(30)에 전류가 유도되고, 이 때 발생된 열에 의해 밥이 지어진다.Ferromagnetic coating containers used in conventional induction heating (JAR) is generally seen in the cross-sectional view shown in (a) and (b) of FIG. Fluorine resin 40 is coated on the inner wall surface, and the ferromagnetic stainless steel 430 (30), which is an expensive clad metal, is bonded to the inner wall surface in a clad manner, and an induction heating coil mounted in an induction heating rice cooker. An electric current is induced in the stainless steel 430 by (10), and rice is cooked by the heat generated at this time.
이때 상기 강자성체 코팅용기로서, 통상적으로 알루미늄 내통을 이용하는 것은 상기 알루미늄 재질이 열전도성이 우수하여 온도의 균일성을 얻을 수 있기 때문이다.In this case, the ferromagnetic coating container is generally used because the aluminum inner cylinder is used because the aluminum material is excellent in thermal conductivity to obtain temperature uniformity.
그러나 이와 같은 구조의 강자성체 코팅용기를 사용할 경우에는 일단, 고가의 클래드 금속을 이용하게 되므로 내부 코팅용기 자체의 단가가 높아 자연히 유도가열 밥솥 또한 가격이 상승하게 되는 단점을 가지게 되고, 알루미늄 내통 중 유도가열 코일과 결합되는 부분에만 스테인레스 430을 형성할 수 없어 결국, 알루미늄 내통의 외벽면 전체에 동일 재질의 스테인레스430을 형성하게 되므로 내부 코팅용기 자체의 무게가 무거워져 사용상의 불편함이 뒤따르게 되는 문제점이 있었다.However, in the case of using a ferromagnetic coating container having such a structure, since expensive clad metal is used, the cost of the inner coating container itself is high, and thus, the induction heating rice cooker also naturally has a disadvantage in that the price increases. Since stainless 430 cannot be formed only at the portion that is combined with the coil, stainless 430 of the same material is formed on the entire outer wall of the aluminum inner cylinder, so that the weight of the inner coating container itself becomes heavy, resulting in inconvenience in use. there was.
이에 본 발명은 상기와 같은 종래의 문제점들을 개선하기 위하여 이루어진 것으로, 알루미늄 내통의 외벽면에 Ni 또는 Co 등의 강자성체 금속을 유도가열 코일과 결합되는 부분에만 코팅함으로써 내부 코팅용기 자체의 단가를 줄이면서도 그 중량을 줄일 수 있도록 한 유도가열 밥솥용 강자성체 코팅용기 제조방법을 제공함에 그 목적이 있다.Accordingly, the present invention was made to improve the above-described problems, while reducing the cost of the inner coating container itself by coating only the portion of the aluminum inner cylinder with a ferromagnetic metal such as Ni or Co combined with an induction heating coil. It is an object of the present invention to provide a method for manufacturing a ferromagnetic coating container for an induction heating rice cooker to reduce its weight.
한편, 상기와 같은 목적을 달성하기 위한 본 발명에 따른 유도가열 밥솥용 강자성체 코팅용기의 제조방법은 유도가열 밥솥에 이용되는 알루미늄 내통을 소정 두께를 가지도록 형성하는 공정과; 상기 알루미늄 내통 외벽면에 강자성체 금속인 Ni 또는 Co를 Ar-N2가스분위기에서 플라즈마 코팅하는 공정 및 ; 강자성체 금속이 코팅된 상기 알루미늄 내통을 열처리하는 공정으로 이루어짐을 특징으로 한다.On the other hand, the method of manufacturing a ferromagnetic coating container for induction heating rice cooker according to the present invention for achieving the above object comprises the steps of forming an aluminum inner cylinder to be used for the induction heating rice cooker to have a predetermined thickness; Plasma coating Ni or Co, a ferromagnetic metal, on the outer wall of the inner tube of aluminum in an Ar-N 2 gas atmosphere; It characterized in that the ferromagnetic metal is coated with a process of heat-treating the aluminum inner cylinder.
상기 구성을 가지도록 유도가열 강자성체 코팅용기를 제조한 결과, 생산비용을 절감할 수 있게 된다.As a result of manufacturing the induction heating ferromagnetic coating container to have the above configuration, it is possible to reduce the production cost.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예에 대해 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.
제2도는 본 발명에 따른 유도가열 밥솥용 강자성체 코팅용기의 형태를 도시한 단면도를 나타낸 것이다.Figure 2 shows a cross-sectional view showing the form of the ferromagnetic coating container for induction heating rice cooker according to the present invention.
상기 단면도에서 알 수 있듯이 본 발명에 따른 강자성체 코팅용기는 알루미늄 내통(100) 외벽면의 하부와 측면 일부 즉, 유도가열 밥솥의 본체에 형성된 유도가열 코일(110)의 결합부위에 Ni 또는 Co 재질의 강자성체(120)가 소정두께(t)로 코팅된 구조를 갖는다.As can be seen in the cross-sectional view, the ferromagnetic coating container according to the present invention is made of Ni or Co material at the coupling portion of the induction heating coil 110 formed in the lower and side portions of the outer wall surface of the inner wall of the aluminum inner tube 100, that is, the induction heating cooker. The ferromagnetic material 120 has a structure coated with a predetermined thickness (t).
이와 같이 강자성체로서 Ni 또는 Co를 이용하는 것은 기존에 사용되던 강자성체인 순처에 비해 투자율(μ) 및 저항율(ρ)의 곱이 커 열효율을 높일 수 있기 때문이다.The use of Ni or Co as a ferromagnetic material is because the product of permeability (μ) and resistivity (ρ) is higher than that of the conventional ferromagnetic material Suncheok, which can increase thermal efficiency.
강자성체인 상기 Ni 또는 Co 는, Ni 또는 Co 파우더(powder)를 Ar-N2가스분위기에서 플라즈마 스프레이(plasma spraying)하여 알루미늄 내통(100)의 외벽면에 코팅되도록 형성되며, 상기 공정 진행시 이용되는 파우더 입자 크기는 0.02-0.1mm이다.The ferromagnetic Ni or Co is formed to be coated on the outer wall surface of the aluminum inner cylinder 100 by plasma spraying Ni or Co powder (powder) in an Ar-N 2 gas atmosphere, which is used during the process Powder particle size is 0.02-0.1 mm.
이때, 알루미늄 내통(100)의 외벽면에 코팅되는 강자성체의 코팅두께t는, 알루미늄 내통(100)에 전류가 유도되어 리키지 전류(leakage current)가 발생되는 등의 불량현상을 방지하기 위하여 코팅되는 재질의 인버터 스위칭 주파수에서의 표피효과(skin depth)에 의한 침투깊이 보다 큰 폭의 두께를 가지도록 형성해야 한다.At this time, the coating thickness t of the ferromagnetic material coated on the outer wall surface of the aluminum inner cylinder 100 is coated to prevent a defect such as a current is induced in the aluminum inner cylinder 100 to generate a leakage current. It should be formed to have a thickness larger than the depth of penetration due to skin depth at the inverter switching frequency of the material.
즉, 코팅 두께를 t라 하고, 코팅되는 재질의 저향율을 ρ, 투자율을 μ, 스위칭 주파수를 f라 하면, 그 코팅두께 t≥(ρ/πμf)1/2범위내에서 형성한다.In other words, if the coating thickness is t, and the refraction rate of the material to be coated is ρ, the permeability is μ, and the switching frequency is f, the coating thickness t ≧ (ρ / πμf) 1/2 is formed within the range.
위에서 언급된 바와 같은 일련의 강자성체 코팅공정이 완료되면, 이후 강자성체(120)가 코팅된 알루미늄 내통(100)을 1시간 동안 325℃의 온도에서 열처리를 실시한다.When the series of ferromagnetic coating process as mentioned above is completed, the ferromagnetic material 120 is coated with the inner tube 100 is subjected to a heat treatment at a temperature of 325 ℃ for 1 hour.
따라서, 상기와 같은 강자성체 코팅용기를 구비한 유도가열 밥솥에 전원을 공급하면, 밥통 자체에 장착된 유도가열 코일(110)에 의해 전류가 유도되고, 이 유도된 전류에 의해 강자성체(120)는 자화성을 띠게 되며, 큰 부하를 갖는 상기 강자성체는 유도된 전류에 의해 열이 발생되므로 용기 내의 대류현상에 의해 음식물이 조리된다.Therefore, when power is supplied to the induction heating rice cooker having a ferromagnetic coating container as described above, the current is induced by the induction heating coil 110 mounted on the rice bowl itself, the ferromagnetic material 120 by the induced current The ferromagnetic material, which is harmonious and has a large load, generates heat by induced current, and thus food is cooked by convection in a container.
상술한 바와 같이 본 발명에 의하면, 유도가열 밥솥용 강자성체 코팅용기를 저가로 제작할 수 있게 되며, 이로 인해 상기 강자성체 코팅용기를 적용한 유도가열 밥솥 또한 그 단가를 줄일 수 있게 되고, 유도가열 코일과 결합되는 부분만을 강자성체로 코팅함으로써 용기 자체의 중량을 줄일 수 있게 되어 사용상의 불편함을 개선할 수 있게 된다.As described above, according to the present invention, the ferromagnetic coating container for the induction heating rice cooker can be manufactured at low cost, and thus, the induction heating rice cooker to which the ferromagnetic coating container is applied can also be reduced in cost and combined with the induction heating coil. By coating only the portion with a ferromagnetic material it is possible to reduce the weight of the container itself to improve the inconvenience in use.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950012083A KR0162347B1 (en) | 1995-05-16 | 1995-05-16 | Method for making vessels of induction heater rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950012083A KR0162347B1 (en) | 1995-05-16 | 1995-05-16 | Method for making vessels of induction heater rice cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960040271A KR960040271A (en) | 1996-12-17 |
| KR0162347B1 true KR0162347B1 (en) | 1998-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950012083A KR0162347B1 (en) | 1995-05-16 | 1995-05-16 | Method for making vessels of induction heater rice cooker |
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| KR (1) | KR0162347B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030034485A (en) * | 2001-10-23 | 2003-05-09 | 엘지전자 주식회사 | Induction heating type rice pot |
| KR20040083729A (en) * | 2003-03-24 | 2004-10-06 | 엘지전자 주식회사 | Device for preventing water drop for electrical jar |
-
1995
- 1995-05-16 KR KR1019950012083A patent/KR0162347B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030034485A (en) * | 2001-10-23 | 2003-05-09 | 엘지전자 주식회사 | Induction heating type rice pot |
| KR20040083729A (en) * | 2003-03-24 | 2004-10-06 | 엘지전자 주식회사 | Device for preventing water drop for electrical jar |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960040271A (en) | 1996-12-17 |
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