KR920004074B1 - Heat emitting vessel for electronic range - Google Patents

Heat emitting vessel for electronic range Download PDF

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Publication number
KR920004074B1
KR920004074B1 KR1019900012103A KR900012103A KR920004074B1 KR 920004074 B1 KR920004074 B1 KR 920004074B1 KR 1019900012103 A KR1019900012103 A KR 1019900012103A KR 900012103 A KR900012103 A KR 900012103A KR 920004074 B1 KR920004074 B1 KR 920004074B1
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South Korea
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container
ceramic
loss
heat
siliceous
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KR1019900012103A
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Korean (ko)
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KR920004789A (en
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최재철
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최재철
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/16Shelves, racks or trays inside ovens; Supports therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00Stoves or ranges heated by electric energy
    • F24C7/02Stoves or ranges heated by electric energy using microwaves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

The container for microwave oven, has an inner case having heat accumulating and radiating properties. The container has an onter case of radio wave transmitting material, a heat insulating space, an inner ceramic case formed by baking the mixture of RF lossy material and siliceous inorganic material. Inner wall of the container is coated with ceramic material formed by baking the mixture of RF lossy material and siliceous material.

Description

축열겸 발열용기Heat storage and heating container

제 1 도는 본 발명의 실시예의 단면도.1 is a cross-sectional view of an embodiment of the present invention.

제 2 도는 본 발명의 다른 실시예의 단면도.2 is a cross-sectional view of another embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 외통 2 : 단열공간부1: outer cylinder 2: insulation space

3 : 고주파고손실성 세라믹내통3: high frequency high loss ceramic

본 발명은 축염겸 발열용기에 관한 것이며 특히 내통이 발열성과 축열성을 가진 용기에 관한 것이다. 세계적으로 널리 보급되고 있는 전자레인지는 각종 음식물을 신속히 조리하는 장점이 있으나 조리된 음식을 식지 않게 보관하는데는 문제점이 있었다. 이러한 문제점에 착안하여 고주파 손실재인 패라이트 또는 티탄산바륨을 주성분으로하여 만든 발열체로 특수형상의 용기로 만들어 조리된 음식물을 따뜻하게 보관하려는 시도가 있었다. 즉 일본국 특허출원 공고 소 53-44694에서는 티탄산바륨과 같은 유전재와 유크립타이트롤 주성분으로 하는 소결체로서 전자파 가열장치용 용기를 만들어 이를 전자레인지 내부에 넣어서 전자파에너지를 흡수하고 그 흡수에너지에 의하여 용기를 발열시키고자 하였으나, 그 발열온도는 4분간에 섭시 300도에 불과하였으며 일본국 특허출원공고 소 55-20614에서는 Li2O(1-y) Al2O3·yFe2O3·XSiO2로 표시되는 세라믹재료에 의하여 전자파에너지를 흡수하는 발열체를 개시하고 있으나 이 발열체도 내열충격성은 우수하나 전자레인지 내부에 넣어 사용하는 경우에 4분간에 도달한 온도는 섭시 250도에 불과하였다. 또한 일본국 특허출원공개 소 55-137183에서는 고주파 손실재로서 자기(磁器)반도체를 만들어 전자파를 조사(照射)하여 발열하는 것을 개시하고 있으나 자기반도체의 표면온도는 1분간 전자파를 조사한 결과 섭시 220도에 불과하였고 또한 그 반도체를 보온체로 피복하여 만든 축열체를 전자레인지내에 넣어 전자파를 1분간 조사한후 그 표면온도가 섭씨 150도가 되는 시간을 1시간에 불과하여 음식물의 신속조리는 가능하지만 그 발열온도 및 축열선능이 충분하지 못하였다.The present invention relates to a heat storage and a heat generating container, and more particularly, to a container having an inner tube having heat generating property and heat storage property. Microwave ovens, which are widely spread around the world, have the advantage of quickly cooking various foods, but there are problems in keeping cooked foods from cooling. In view of these problems, there has been an attempt to keep the food cooked warmly by making a special shape container with a heating element made mainly of high frequency loss material, ferrite or barium titanate. In Japanese Patent Application Publication No. 53-44694, a sintered body composed of a dielectric material such as barium titanate and eutectic titrol as a main component is used to make a container for an electromagnetic heating device, and put it in a microwave oven to absorb electromagnetic energy and In order to heat the container, the heating temperature was only 300 degrees Celsius in 4 minutes and Li 2 O (1-y) Al 2 O 3 · yFe 2 O 3 · XSiO 2 in Japanese Patent Application Publication 55-20614 Although a heating element that absorbs electromagnetic energy by a ceramic material indicated by is disclosed, the heating element also has excellent thermal shock resistance, but when used in a microwave oven, the temperature reached for 4 minutes was only 250 degrees Celsius. In addition, Japanese Patent Application Publication No. 55-137183 discloses the generation of magnetic semiconductors as high-frequency loss materials to generate electromagnetic waves by irradiation with electromagnetic waves, but the surface temperature of magnetic semiconductors is 220 degrees Celsius after 1 minute of irradiation. In addition, the heat storage body made by covering the semiconductor with a heat insulator was placed in a microwave oven and irradiated with electromagnetic waves for 1 minute, and the surface temperature was 150 degrees Celsius for only 1 hour. And heat storage capacity was not sufficient.

본 발명자는 상기한 발열체, 축열체등에 대하여 예의 검토한바 여기에 사용되는 고주파 손실재 예를들면 자성재는 이를 제조할때 주성분 화합물들의 순도를 최대한 높은 것을 선택사용하여 초투자율을 높이고 자성손실을 최소화한 것이므로 그 손실재는 자성손실이 적을수록 성능이 양호한 코어 등에 사용하면 좋으나 발열체, 축열체는 그 자성손실들이 커야만 발열온도가 높고 축열성능이 양호한 것으로 판명되었다. 또한 현재까지 알려진 고주파 손실재인 자성재, 유전재는 그 자성손실 또는 유전손실이 일반적인 절연성물질에 비하여는 그 손실이 크므로 고주파 고손실재라고도 불리우고 있지만 자성손실 또는 유전손실이 크면 클수록 전자파 흡수성이 양호하여 발열온도가 높고 축열성능이 양호하게 되는 발열체 축전체에 사용하기에는 그 손실이 적기 때문에 적합하지 못한점도 판명되었다.The inventor of the present invention has studied the above-described heating element, heat storage element, etc. The high frequency loss material used here, for example, magnetic material is used to select the highest purity of the main component compounds when manufacturing the high magnetic permeability and minimize the magnetic loss The loss of magnetic material is better to be used in cores with better performance as the magnetic loss is smaller, but the heat generating element and the heat storage body have high heat generation temperature and good heat storage performance only when the magnetic losses are large. In addition, magnetic materials and dielectric materials, which are known to be high frequency loss materials, are called high frequency high loss materials because their magnetic loss or dielectric loss is larger than that of general insulating materials, but the higher the magnetic loss or dielectric loss, the better the electromagnetic absorption. It has also been found to be unsuitable because the loss is small for use in a heating element accumulator having a high exothermic temperature and a good heat storage performance.

본 발명에서는 위와 같은 사실과 고주파 손실재에 규사를 혼합하면 고주파손실이 증대되는 점을 발견하여 전자파흡수능이 양호하여 짧은 시간에 양호하여 짧은 시간에 높은 발열온도를 가지는 용기를 제공함을 목적으로 한다.In the present invention, it is an object to provide a container having a high exothermic temperature in a short time is good in a short time to find the fact that the high frequency loss is increased when the silica sand is mixed with the above facts and the high frequency loss material.

본 발명의 다른 목적은 축열성능이 좋고 단열을 겸하는 용기를 제공하는 것이다.Another object of the present invention is to provide a container having a good heat storage performance and doubles heat insulation.

본 발명은 위의 목적을 달성하기 위하여 단열용기의 내통을 고주파손실재와 규산질함유 무기재료를 혼합소성한 고주파 고손실성 세라믹으로 만드는 것을 특징으로 한다. 본 발명은 고주파 손실재가 가지고 있는 전자파흡수능과 다중복사에 의한 전자파흡수능 향상원리를 고려하고 전자파 투과성인 규산질함유 무기재료에 의하여 다중복사 구조를 형성함과 동시에 강도를 보강하므로서 전자파흡수능을 크게 증가시킬 뿐아니라 전자파흡수능이 향상에 의하여 발열온도가 획기적으로 상승되며 발열시간이 짧고 내열성, 내충격 강도가 우수한 용기를 얻을 수 있다.In order to achieve the above object, the present invention is characterized in that the inner cylinder of the heat insulation container is made of a high frequency high loss ceramic in which a high frequency loss material and a siliceous-containing inorganic material are mixed and fired. The present invention considers the electromagnetic wave absorbing ability of the high-frequency loss material and the principle of improving the electromagnetic wave absorbing ability by multiple radiation, and greatly increases the electromagnetic wave absorbing ability by forming a multi-radiation structure by the siliceous-containing inorganic material which is electromagnetic wave and strengthening the strength. In addition, it is possible to obtain a container having an excellent heat absorption temperature and short heat generation time and excellent heat resistance and impact strength due to the improved electromagnetic wave absorption ability.

본 발명을 실시에 도면에 의하여 설명한다.BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be explained with reference to the drawings.

제 1 도의 실시에에 있어서 1은 외통으로서, 유기질 또는 무기질재료와 같은 공지의 전자파투과성 재료로 만들며, 2는 단열공간이고 3은 세라믹 내통으로서 자성재, 유전재와 같은 고주파 손실재를 적어도 1종이상을 포함하고 여기에 모래, 규사, 고령토, 점토와 같은 요업재료와 그 요업재료로 만든 폐제품 분쇄물등으로 되는 규산질 함유 무기재료를 적어도 1종이상 혼합소성하므로서 고주파 고손실성화한 것이다.In the embodiment of FIG. 1, 1 is an outer cylinder, made of a known electromagnetic wave permeable material such as an organic or inorganic material, 2 is an insulating space, and 3 is a ceramic inner cylinder, and at least one high frequency loss material such as magnetic material and dielectric material. Including the above, at least one or more siliceous-containing inorganic materials, such as ceramic materials such as sand, silica sand, kaolin and clay, and waste product ground products made from the ceramic materials, are mixed-fired and subjected to high frequency high loss.

제 2 도의 다른 실시에에 있어서는 단열공간부(2)를 가지는 용기본체(1)의 내벽에 실시예 1에서와 같은 세라믹재의 도막을 형성하여서 된 것이며, 또한 실시예에서는 단열공간부를 공간부로 하였으나 공지한 단열재를 충전할 수도 있고 용기의 외벽에 별도의 합성수지등으로된 외피를 피복할 수도 있으며 필요할 경우 유약처리도 할 수 있다.In another embodiment of FIG. 2, a coating film made of the same ceramic material as in Example 1 is formed on the inner wall of the container body 1 having the heat insulating space 2, and in the embodiment, the heat insulating space is a space. One insulation may be filled, or the outer wall of the container may be covered with a separate synthetic resin, etc., or glazed if necessary.

본 발명에 있어서 세라믹 내통 또는 도막은 고주파손실재와 규산질함유무기재료의 양, 입도등을 적의 선택하거나 두께를 변화시키거나 전자파의 조사시간을 변경하면 본 발명용기의 온도를 용도에 맞게 조절할수 있음도 물론이다.In the present invention, the ceramic inner cylinder or the coating film can adjust the temperature of the container according to the application by appropriately selecting the amount, particle size, etc. of the high frequency loss material and the siliceous inorganic material, changing the thickness, or changing the irradiation time of electromagnetic waves. Of course.

이상과 같은 본 발명은 세라믹내통의 두께를 4.78mm로 하였을 경우 전자레인지내에 넣어 전자파를 조사하면 100초후에 세라믹내통이 980도에 달하여 적열상태가 되었다. (상세한 설명은 1990년 특허원 10710호 참조)According to the present invention as described above, when the thickness of the ceramic inner tube is 4.78 mm, the ceramic inner tube reaches 980 degrees in 100 seconds after 100 seconds when irradiated with electromagnetic waves in a microwave oven. (Refer to 1990 Patent No. 10710 for detailed description)

이상과 같이 본 발명은 용기의 내통을 고주파 고손실성재로 만들어 전자파흡수능을 크게 증가시킬 수 있으므로 예를들면, 컵, 밥솥, 찜통, 도시락용기등 등으로 사용하면 신속히 그 내용물이 가온됨과 동시에 일단 가온된 후에는 축열성능이 있으므로 그 온도를 오래동안 보존시킬 수 있다. 또한 세락믹내통 또는 도막의 외부에 단열공간부가 형성되어 있으므로 온도보존을 더 오래지속시킬 수 있을 뿐아니라 세라믹내통 또는 도막의 온도가 높은 경우에도 손으로 만질수 있는 등 그 취급이 간편하게 된다.As described above, the present invention makes the inner cylinder of the container a high-frequency high-loss material, which can greatly increase the electromagnetic wave absorption ability. For example, when used as a cup, rice cooker, steamer, lunch box, etc. After that, the heat storage performance is maintained, so that the temperature can be stored for a long time. In addition, since the thermal insulation space is formed outside the ceramic casing or the coating film, not only the temperature preservation can be maintained longer, but also the hand can be easily touched even when the temperature of the ceramic casing or the coating film is high.

Claims (2)

전파투과성 재료로된 외통에 단열공간부가 형성되게 고주파손실재와 규산질함유 무기재료를 혼합소성한 세라믹내통을 형성하여서된 축열겸 발열용기.A heat storage and heat generating container formed by forming a ceramic inner cylinder in which a high-frequency loss material and a siliceous-containing inorganic material are mixed so that an insulating space is formed in an outer cylinder made of a radio-transmissive material. 단열공간부를 가지는 용기본체의 내벽에 고주파 손실재와 규산질함유 무기재료를 혼합소성한 세라믹도막을 형성하여서 된 축열겸 발열용기.A heat storage and heat generating container formed by forming a ceramic coating film mixed with a high frequency loss material and a siliceous inorganic material on the inner wall of a container body having an insulating space part.
KR1019900012103A 1990-08-07 1990-08-07 Heat emitting vessel for electronic range KR920004074B1 (en)

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KR1019900012103A KR920004074B1 (en) 1990-08-07 1990-08-07 Heat emitting vessel for electronic range

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KR920004074B1 true KR920004074B1 (en) 1992-05-23

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