WO2019194348A1 - Microwave furnace using composite dielectric heating plate - Google Patents

Microwave furnace using composite dielectric heating plate Download PDF

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Publication number
WO2019194348A1
WO2019194348A1 PCT/KR2018/005352 KR2018005352W WO2019194348A1 WO 2019194348 A1 WO2019194348 A1 WO 2019194348A1 KR 2018005352 W KR2018005352 W KR 2018005352W WO 2019194348 A1 WO2019194348 A1 WO 2019194348A1
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Prior art keywords
heating
furnace
composite dielectric
heating plate
microwave
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PCT/KR2018/005352
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French (fr)
Korean (ko)
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정춘실
이현구
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주식회사 세지테크
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Publication of WO2019194348A1 publication Critical patent/WO2019194348A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/32—Casings
    • F27B9/34—Arrangements of linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass

Definitions

  • the present invention relates to a microwave heating furnace using a composite dielectric heating plate, and more particularly, a composite dielectric capable of significantly increasing energy efficiency and operating reliability and durability of a device by applying a composite dielectric for absorbing microwaves to a heating furnace.
  • a microwave heating furnace using a dielectric heating plate is a microwave heating furnace using a dielectric heating plate.
  • heating furnaces are classified into a high frequency induction furnace or a microwave heating furnace according to the type of electromagnetic wave or a combustion furnace using fossil fuel or an electric resistance furnace using electricity.
  • a combustion furnace has problems such as the emission of greenhouse gases or pollutants caused by burning fossil fuels, and in the case of an electric furnace, rod-type heaters are installed at intervals to generate heat due to electrical resistance. Not only is the efficiency very low, but there is a limit to uniformly forming the temperature in the furnace, and in the case of high frequency induction, there is a big problem of energy loss.
  • Such a combustion furnace, electric furnace or high frequency induction furnace has a limitation in applying to various manufacturing processes due to the overall cost or low heating rate due to installation or operation in addition to the individual problems as described above.
  • microwave heating furnaces there is a growing interest in microwave heating furnaces and the development thereof is actively progressing.
  • the present invention is to solve the problems as described above, the present invention is to maximize the absorption and heating of microwaves by using a panel or composite coating containing a composite dielectric, heating efficiency and uniformity and energy use of the furnace Microwave heating using a composite dielectric heating plate that can greatly improve efficiency, and has excellent durability even under repeated heating conditions due to its robust structure, and can greatly increase the operating reliability of the device due to its structure capable of rapid temperature rise. To provide.
  • the heating chamber body 26 is formed with a heating body (21);
  • a magnetron 22 connected to the furnace body 21 to generate microwaves
  • a waveguide (25) extending from the magnetron (22) to the furnace body (21) to transmit microwaves in the heating chamber (26);
  • a microwave heating furnace using a composite dielectric heating plate characterized in that it comprises a composite dielectric heating plate 30 made in the form of a panel containing a plurality of dielectrics to absorb and heat the microwave is provided. do.
  • the composite dielectric heating plate 30 includes a main panel 31 containing silicon carbide (SiC);
  • a plurality of heating dots 32 manufactured by mixing an oxide-based dielectric including aluminum oxide (Al 2 O 3 ) and molybdenum disilicide (MoSi 2 ) at a predetermined ratio so as to be inserted into the main panel 31.
  • An microwave heating furnace using a composite dielectric heating plate is provided.
  • a microwave heating furnace using a composite dielectric heating plate is provided on the main panel 31, wherein a plurality of pinholes 33 penetrated separately from the heating dot 32 are further provided. .
  • the composite dielectric heating plate 30 is provided in the heating chamber 26 of the heating furnace body 21, the absorption capacity and heating effect of microwaves according to the dielectric properties are excellent and thus the heating furnace The heating efficiency of (20) is greatly increased and at the same time, there is an advantage that the entire heating area 26 can be uniformly heated by the panel structure in which the entire area is heated.
  • the present invention is provided with a composite dielectric heating plate 30 is absorbed by the microwave heating, there is an advantage that can be rapidly elevated temperature difficult to achieve in the conventional heating furnace by applying the microwave absorption and exothermic phenomenon of the dielectric.
  • the rigidity of the panel itself is very firmly formed as in the conventional ceramics, so that the durability is excellent and the deterioration is caused by repeated heating. There is an advantage that can maintain excellent heating performance without being.
  • the composite dielectric heating plate 30 forms a heating dot 32 on the main panel 31 in which an oxidizing dielectric and molybdenum disilicide (MoSi 2 ) are mixed. Accordingly, the heat generation limit of the main panel 31 itself may be overcome, thereby enabling high temperature heat generation.
  • MoSi 2 molybdenum disilicide
  • the pinhole 33 penetrating the main panel 31 is formed in addition to the heating dot 32, microwaves are directly transmitted through the pinhole 33.
  • the heat generated through the main panel 31 and the heating dot 32 itself there is an advantage that can maximize the heating effect on the object to be heated (H).
  • FIG. 1 is a perspective view showing one embodiment of the present invention
  • FIG. 3 is a front view showing a part of the configuration according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view according to the configuration of FIG.
  • the heating furnace 20 of the present invention is provided with a heating furnace body 21 of a predetermined size to accommodate the heated object, the heating furnace body 21 is located on one side
  • the magnetron 22 is configured to generate microwaves.
  • the furnace body 21 is provided with inlet shielding ducts 22 and 23 and outlet shielding ducts each having a reduced cross-sectional size on both sides.
  • the waveguide 25 extending from the magnetron 22 is connected.
  • the waveguide 25 is to transmit the microwaves generated by the macronet 22 into the furnace body 21, and each of the shielding ducts (23, 24) by the waveguide (25)
  • the microwave is to prevent leakage to the outside of the furnace body 21, the furnace 20 of the present invention is not particularly limited in use, shape or installation position, as shown above
  • the furnace body 21 and the shielding ducts 23 and 24 are installed on the conveyor 10, whereby the heating furnace body 21 and the shielding ducts 23 and 24 may be applied to a continuous furnace for heating the heated object continuously moved by the conveyor 10. .
  • a panel is provided in the heating chamber 26 of the furnace body 21 to absorb microwaves, and heating is performed. This will be described with reference to FIGS. 2 to 5.
  • a heating chamber 26 capable of receiving a heated object is formed in the heating body 21, and a composite dielectric is formed on both side walls and an upper surface of the heating chamber 26.
  • the heating plate 30 is installed, the composite dielectric heating plate 30 is produced in the form of a panel containing a dielectric material so as to absorb and heat the microwaves generated from the magnetron 22, which is specifically described by FIGS.
  • the explanation is as follows.
  • the composite dielectric heating plate 30 includes a main panel 31 having a predetermined area.
  • the main panel 31 mainly contains silicon carbide (SiC), which is a dielectric material, in the form of a panel. It is made of, and it contains silicon carbide which is one of the common ceramic components, so that the panel itself is excellent in heat resistance as well as absorbs microwaves and generates heat.
  • SiC silicon carbide
  • the heating dots 32 are formed of aluminum oxide (Al 2 O 3 ), zinc oxide (ZnO), or zirconium oxide ( It is prepared by mixing molybdenum disilicide (MoSi 2 ) at a predetermined ratio using an oxidizing dielectric such as ZrO 2 ), copper oxide (CuO), iron oxide (Fe 2 O 3 ), barium titanate (BaTiO 3 ), and the like as a main raw material.
  • Al 2 O 3 aluminum oxide
  • ZnO zinc oxide
  • zirconium oxide It is prepared by mixing molybdenum disilicide (MoSi 2 ) at a predetermined ratio using an oxidizing dielectric such as ZrO 2 ), copper oxide (CuO), iron oxide (Fe 2 O 3 ), barium titanate (BaTiO 3 ), and the like as a main raw material.
  • a plurality of pinholes 33 penetrated to a predetermined size adjacent to the heating dot 32 may be formed on the main panel 31.
  • the temperature and the degree of temperature increase by the composite dielectric heating plate 30 may be formed. The following description is made.
  • the main panel 31 made of silicon carbide (SiC) generates heat at room temperature, heats around 800 ° C., and is a heating dot made of an oxidizing dielectric. By 32, high temperature heat generation of about 1600 ° C. is possible beyond the temperature limit of the main panel 31.
  • the present invention by adjusting the ratio of molybdenum disilicide (MoSi 2 ) added to the heating dot 32, not only the production of the composite dielectric heating plate 30 having various temperature rising ranges is possible but also a rapid temperature increase of about 70 ° C. per minute. This is possible, thereby providing a heating furnace 30 having an optimized heating condition according to the use, and at the same time, it is possible to reduce electricity costs by about 30% compared to an electric furnace, and by the low power consumption and high heating efficiency as described above Applicable to medium and large furnaces of 75 kW or more.
  • MoSi 2 molybdenum disilicide
  • the heating dot 32 is used.
  • Secondary heat generation (b) is possible up to 1600 ° C and at the same time the microwave is passed through the pinhole 33 so that the direct transmission of the microwave (c) to reach the surface and inside of the heated object (H) is made Or increase the heating effect.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Furnace Details (AREA)

Abstract

The present invention relates to a microwave furnace using a composite dielectric heating plate which applies, to a furnace, a composite dielectric that absorbs microwaves and generates heat and can, thereby, substantially increase energy efficiency, operational reliability and durability of a device, and the like. Provided according to the present invention is a microwave furnace using a composite dielectric heating plate, comprising: a furnace main body (21) having a heating chamber (26); a magnetron (22) connected to the furnace main body (21) so as to generate microwaves; a waveguide (25) extending from the magnetron (22) to the furnace main body (21) so as to transfer the microwaves into the heating chamber (26); and a composite dielectric heating plate (30) in the form of a panel provided inside the heating chamber (26) and containing a plurality of dielectrics so as to absorb the microwaves, and heat.

Description

복합유전체 발열판을 이용한 마이크로파 가열로Microwave furnace using composite dielectric heating plate
본 발명은 복합유전체 발열판을 이용한 마이크로파 가열로에 관한 것으로, 보다 상세하게는 마이크로파를 흡수 발열하는 복합유전체를 가열로에 적용하여 에너지 효율과 장치의 작동 신뢰성 및 내구성 등을 대폭적으로 증대시킬 수 있는 복합유전체 발열판을 이용한 마이크로파 가열로에 관한 것이다.The present invention relates to a microwave heating furnace using a composite dielectric heating plate, and more particularly, a composite dielectric capable of significantly increasing energy efficiency and operating reliability and durability of a device by applying a composite dielectric for absorbing microwaves to a heating furnace. A microwave heating furnace using a dielectric heating plate.
일반적으로 가열로는 화석연료를 사용하는 연소로나 전기를 사용하는 전기저항로 또는 전자파의 종류에 따라 고주파유도로나 마이크로파 가열로 등으로 구분되는 것이다.In general, heating furnaces are classified into a high frequency induction furnace or a microwave heating furnace according to the type of electromagnetic wave or a combustion furnace using fossil fuel or an electric resistance furnace using electricity.
이러한 가열로에 있어서, 연소로는 화석연료를 연소함에 따른 온실가스나 오염물질의 배출 등의 문제점이 있고, 전기로의 경우에는 봉타입의 히터를 간격을 두고 설치하여 전기적 저항으로 발열되는 특성으로 인해 효율이 매우 낮을 뿐만 아니라 노내의 온도를 균일하게 형성하는 데에 한계가 있는 것이며, 고주파유도로의 경우에도 에너지 손실이 큰 문제점이 있는 것이다.In such a furnace, a combustion furnace has problems such as the emission of greenhouse gases or pollutants caused by burning fossil fuels, and in the case of an electric furnace, rod-type heaters are installed at intervals to generate heat due to electrical resistance. Not only is the efficiency very low, but there is a limit to uniformly forming the temperature in the furnace, and in the case of high frequency induction, there is a big problem of energy loss.
이러한 연소로나 전기로 또는 고주파유도로는 전술된 바와 같은 개별적은 문제점에 더하여 전반적으로 설치나 운영에 따른 비용발생이나 낮은 승온속도 등으로 인해 다양한 제조공정에 적용하는 데에 한계가 있는 것으로, 이를 해결하기 위한 대안으로 마이크로파 가열로에 대한 관심이 높아짐과 동시에 그에 따른 개발이 활발하게 진행되고 있는 상황이다. Such a combustion furnace, electric furnace or high frequency induction furnace has a limitation in applying to various manufacturing processes due to the overall cost or low heating rate due to installation or operation in addition to the individual problems as described above. As an alternative to this, there is a growing interest in microwave heating furnaces and the development thereof is actively progressing.
그런데 종래의 마이크로파 가열로의 경우에는 1~3kW급의 소형 마그네트론 상에 다수의 도파관을 연결함에 따라 전자파의 중첩(상쇄)으로 인한 효율저하의 문제가 발생되고, 또한 마그네트론 자체의 고장이 빈번하여 교체주기가 짧을 뿐만 아니라 그로 인한 생산성 저하의 문제점이 있는 것이다.However, in the case of the conventional microwave heating furnace, as a plurality of waveguides are connected on a small magnetron of 1 to 3 kW class, problems of efficiency deterioration due to overlapping (offset) of electromagnetic waves occur, and the magnetron itself is frequently replaced. Not only is the cycle short, but there is a problem of deterioration in productivity.
본 발명은 전술한 바와 같은 문제점을 해결하기 위한 것으로, 본 발명은 복합유전체를 함유하는 패널을 제작하거나 도료를 사용하여 마이크로파의 흡수와 가열을 극대화시킴에 따라 가열로의 가열효율과 균일도 및 에너지 사용효율을 대폭적으로 개선할 수 있고, 견고한 구조에 의해 반복적인 가열조건에서도 우수한 내구성을 보유함과 동시에 급속승온이 가능한 구조에 의해 장치의 작동 신뢰성을 대폭적으로 증대시킬 수 있는 복합유전체 발열판을 이용한 마이크로파 가열로를 제공하는 것이다.The present invention is to solve the problems as described above, the present invention is to maximize the absorption and heating of microwaves by using a panel or composite coating containing a composite dielectric, heating efficiency and uniformity and energy use of the furnace Microwave heating using a composite dielectric heating plate that can greatly improve efficiency, and has excellent durability even under repeated heating conditions due to its robust structure, and can greatly increase the operating reliability of the device due to its structure capable of rapid temperature rise. To provide.
본 발명의 특징에 따르면, 히팅챔버(26)가 형성된 가열로본체(21)와;According to a feature of the invention, the heating chamber body 26 is formed with a heating body (21);
상기 가열로본체(21) 상에 연결되어 마이크로파를 생성하도록 된 마그네트론(22)과;A magnetron 22 connected to the furnace body 21 to generate microwaves;
상기 마그네트론(22)으로부터 가열로본체(21)에 이르도록 연장되어 상기 히팅챔버(26) 내에 마이크로파를 전달하도록 된 도파관(25)과;A waveguide (25) extending from the magnetron (22) to the furnace body (21) to transmit microwaves in the heating chamber (26);
상기 히팅챔버(26) 내에 구비되어 마이크로파를 흡수하여 가열되도록 복수의 유전체를 함유하여 패널형태로 제작된 복합유전체 발열판(30)을 포함하여 이루어진 것을 특징으로 하는 복합유전체 발열판을 이용한 마이크로파 가열로가 제공된다.Provided in the heating chamber 26 is a microwave heating furnace using a composite dielectric heating plate, characterized in that it comprises a composite dielectric heating plate 30 made in the form of a panel containing a plurality of dielectrics to absorb and heat the microwave is provided. do.
본 발명의 다른 특징에 따르면, 상기 복합유전체 발열판(30)은 탄화규소(SiC)를 함유하는 메인패널(31)와;According to another feature of the invention, the composite dielectric heating plate 30 includes a main panel 31 containing silicon carbide (SiC);
상기 메인패널(31) 상에 삽입되도록 산화알루미늄(Al2O3)을 포함한 산화계 유전체와 몰리브덴 디실리사이드(MoSi2)를 일정 비율로 혼합하여 제작된 복수개의 히팅도트(32)를 포함하는 것을 특징으로 하는 복합유전체 발열판을 이용한 마이크로파 가열로가 제공된다.And a plurality of heating dots 32 manufactured by mixing an oxide-based dielectric including aluminum oxide (Al 2 O 3 ) and molybdenum disilicide (MoSi 2 ) at a predetermined ratio so as to be inserted into the main panel 31. A microwave heating furnace using a composite dielectric heating plate is provided.
본 발명의 또 다른 특징에 따르면, 상기 메인패널(31) 상에는 상기 히팅도트(32)와는 별도로 관통된 복수개의 핀홀(33)이 더 형성된 것을 특징으로 하는 복합유전체 발열판을 이용한 마이크로파 가열로가 제공된다.According to still another feature of the present invention, a microwave heating furnace using a composite dielectric heating plate is provided on the main panel 31, wherein a plurality of pinholes 33 penetrated separately from the heating dot 32 are further provided. .
이상에서와 같이 본 발명에 의하면, 가열로본체(21)의 히팅챔버(26) 내에 복합유전체 발열판(30)이 구비됨에 따라, 유전체 자체특성에 따른 마이크로파의 흡수능력과 가열효과가 탁월하여 가열로(20)의 가열효율을 대폭적으로 높임과 동시에 전체면적이 가열되는 패널구조에 의해 히팅챔버(26) 내를 전체적으로 균일하게 가열할 수 있는 장점이 있다.As described above, according to the present invention, as the composite dielectric heating plate 30 is provided in the heating chamber 26 of the heating furnace body 21, the absorption capacity and heating effect of microwaves according to the dielectric properties are excellent and thus the heating furnace The heating efficiency of (20) is greatly increased and at the same time, there is an advantage that the entire heating area 26 can be uniformly heated by the panel structure in which the entire area is heated.
또한 본 발명은 마이크로파를 흡수하여 가열되는 복합유전체 발열판(30)이 구비됨에 따라, 유전체의 마이크로파 흡수 및 발열현상을 응용하여 기존의 가열로에서는 달성하기 어려운 급속승온이 가능한 장점이 있다. In addition, the present invention is provided with a composite dielectric heating plate 30 is absorbed by the microwave heating, there is an advantage that can be rapidly elevated temperature difficult to achieve in the conventional heating furnace by applying the microwave absorption and exothermic phenomenon of the dielectric.
또한 본 발명은 탄화규소(SiC)를 함유한 메인패널(31)을 제작함에 따라, 통상의 세라믹과 같이 패널 자체의 강성을 매우 견고하게 형성하여 내구성이 우수할 뿐만 아니라 반복적인 가열작업에 의해서도 열화됨이 없이 우수한 가열성능을 유지할 수 있는 장점이 있다.In addition, according to the present invention, as the main panel 31 containing silicon carbide (SiC) is manufactured, the rigidity of the panel itself is very firmly formed as in the conventional ceramics, so that the durability is excellent and the deterioration is caused by repeated heating. There is an advantage that can maintain excellent heating performance without being.
또한 본 발명의 복합유전체 발열판(30)은 산화계 유전체와 몰리브덴 디실리사이드(MoSi2)를 혼합한 히팅도트(32)를 메인패널(31) 상에 형성함에 따라, 상기 히팅도트(32)의 성분 특성에 따라 상기 메인패널(31) 자체의 발열한계를 극복하여 고온의 발열이 가능한 장점이 있다.In addition, the composite dielectric heating plate 30 according to the present invention forms a heating dot 32 on the main panel 31 in which an oxidizing dielectric and molybdenum disilicide (MoSi 2 ) are mixed. Accordingly, the heat generation limit of the main panel 31 itself may be overcome, thereby enabling high temperature heat generation.
또한 본 발명의 복합유전체 발열판(30)은 상기 히팅도트(32)에 더하여 상기 메인패널(31)을 관통하는 핀홀(33)이 형성됨에 따라, 이 핀홀(33)을 통해 마이크로파가 직접적으로 투과되어 상기 메인패널(31)과 히팅도트(32) 자체를 통한 발열에 더하여 피가열물(H)에 대한 가열효과를 극대화시킬 수 있는 장점이 있다.In addition, in the composite dielectric heating plate 30 of the present invention, as the pinhole 33 penetrating the main panel 31 is formed in addition to the heating dot 32, microwaves are directly transmitted through the pinhole 33. In addition to the heat generated through the main panel 31 and the heating dot 32 itself, there is an advantage that can maximize the heating effect on the object to be heated (H).
도 1은 본 발명의 일실시예를 도시한 사시도1 is a perspective view showing one embodiment of the present invention
도 2는 본 발명의 일실시예에 따른 단면도2 is a cross-sectional view according to an embodiment of the present invention
도 3은 본 발명의 일실시예에 따른 구성의 일부를 도시한 정면도3 is a front view showing a part of the configuration according to an embodiment of the present invention;
도 4는 본 발명의 구성에 따른 발열상태를 도시한 그래프4 is a graph showing a heating state according to the configuration of the present invention
도 5는 도 3의 구성에 따른 단면도5 is a cross-sectional view according to the configuration of FIG.
상술한 본 발명의 목적, 특징들 및 장점은 다음의 상세한 설명을 통하여 보다 분명해질 것이다. 이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 설명하면 다음과 같다.The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
도 1 내지 도 5는 본 발명의 바람직한 실시예를 도시한 것이다. 도 1에 도시된 바와 같이, 본 발명의 가열로(20)는 피가열물을 수용하도록 된 일정 크기로 된 가열로본체(21)가 구비되고, 이 가열로본체(21)의 일측에 위치되어 마이크로파를 생성하도록 된 마그네트론(22)이 설치된 것으로, 상기 가열로본체(21)에는 양측에 축소된 단면크기로 형성된 입구측 차폐덕트(22,23)와 출구측 차폐덕트가 구비되고, 상부측에 상기 마그네트론(22)으로부터 연장된 도파관(25)이 연결된 것이다.1 to 5 show a preferred embodiment of the present invention. As shown in Figure 1, the heating furnace 20 of the present invention is provided with a heating furnace body 21 of a predetermined size to accommodate the heated object, the heating furnace body 21 is located on one side The magnetron 22 is configured to generate microwaves. The furnace body 21 is provided with inlet shielding ducts 22 and 23 and outlet shielding ducts each having a reduced cross-sectional size on both sides. The waveguide 25 extending from the magnetron 22 is connected.
여기에서, 상기 도파관(25)은 마크네트론(22)에 의해 생성된 마이크로파를 상기 가열로본체(21) 내로 전달하도록 된 것이고, 상기 각 차폐덕트(23,24)는 도파관(25)에 의해 전달된 마이크로파가 가열로본체(21)의 외부로 누출되는 것을 방지하도록 된 것인데, 이러한 본 발명의 가열로(20)는 용도나 형상 또는 설치위치가 특정하게 한정되는 것은 아니고, 도시된 바와 같이 상기 가열로본체(21)와 차폐덕트(23,24)가 컨베이어(10) 상에 설치되고, 이에 의해 컨베이어(10)에 의해 연속적으로 이동되는 피가열물을 가열하는 연속식 가열로 등에 적용될 수 있다.Here, the waveguide 25 is to transmit the microwaves generated by the macronet 22 into the furnace body 21, and each of the shielding ducts (23, 24) by the waveguide (25) The microwave is to prevent leakage to the outside of the furnace body 21, the furnace 20 of the present invention is not particularly limited in use, shape or installation position, as shown above The furnace body 21 and the shielding ducts 23 and 24 are installed on the conveyor 10, whereby the heating furnace body 21 and the shielding ducts 23 and 24 may be applied to a continuous furnace for heating the heated object continuously moved by the conveyor 10. .
이와 같은 본 발명은 상기 가열로본체(21)의 히팅챔버(26) 내에 패널이 구비되어 마이크로파를 흡수하여 가열이 이루어지는데, 이를 도 2 내지 도 5에 의해 설명하면 다음과 같다.In the present invention as described above, a panel is provided in the heating chamber 26 of the furnace body 21 to absorb microwaves, and heating is performed. This will be described with reference to FIGS. 2 to 5.
도 2에 도시된 바와 같이, 상기 가열로본체(21) 내에는 피가열물을 수용할 수 있는 히팅챔버(26)가 형성되고, 이 히팅챔버(26) 내에는 양측벽과 상면측에 복합유전체 발열판(30)이 설치된 것으로, 이 복합유전체 발열판(30)은 마그네트론(22)으로부터 발생된 마이크로파를 흡수하여 가열되도록 유전체 물질을 함유하여 패널 형태로 제작되는데, 이를 도 3 내지 도 5에 의해 구체적으로 설명하면 다음과 같다.As shown in FIG. 2, a heating chamber 26 capable of receiving a heated object is formed in the heating body 21, and a composite dielectric is formed on both side walls and an upper surface of the heating chamber 26. The heating plate 30 is installed, the composite dielectric heating plate 30 is produced in the form of a panel containing a dielectric material so as to absorb and heat the microwaves generated from the magnetron 22, which is specifically described by FIGS. The explanation is as follows.
도 3에 도시된 바와 같이, 상기 복합유전체 발열판(30)은 일정 면적으로 된 메인패널(31)로 이루어지는데, 이 메인패널(31)은 유전체 물질인 탄화규소(SiC)를 주로 함유하여 패널형태로 제작한 것으로, 통상의 세라믹 성분 중의 하나인 탄화규소를 함유하여 열에 대한 패널 자체의 내구성이 우수할 뿐만 아니라 마이크로파를 흡수하여 발열된다.As shown in FIG. 3, the composite dielectric heating plate 30 includes a main panel 31 having a predetermined area. The main panel 31 mainly contains silicon carbide (SiC), which is a dielectric material, in the form of a panel. It is made of, and it contains silicon carbide which is one of the common ceramic components, so that the panel itself is excellent in heat resistance as well as absorbs microwaves and generates heat.
또한 상기 메인패널(31) 상에는 원형의 코인형태로 된 복수개의 히팅도트(32)가 배열되는데, 이 히팅도트(32)는 산화알루미늄(Al2O3), 산화아연(ZnO), 산화지르코늄(ZrO2), 산화구리(CuO), 산화철(Fe2O3), 티타늄산바륨(BaTiO3) 등과 같은 산화계 유전체를 주원료로 하여 몰리브덴 디실리사이드(MoSi2)를 일정 비율로 혼합하여 제작한다.In addition, a plurality of heating dots 32 having a circular coin shape are arranged on the main panel 31. The heating dots 32 are formed of aluminum oxide (Al 2 O 3 ), zinc oxide (ZnO), or zirconium oxide ( It is prepared by mixing molybdenum disilicide (MoSi 2 ) at a predetermined ratio using an oxidizing dielectric such as ZrO 2 ), copper oxide (CuO), iron oxide (Fe 2 O 3 ), barium titanate (BaTiO 3 ), and the like as a main raw material.
바람직하게는 상기 메인패널(31) 상에 히팅도트(32)에 인접하여 일정 크기로 관통된 핀홀(33)이 복수개로 형성될 수 있는데, 이와 같은 복합유전체 발열판(30)에 의한 승온정도와 시간 등을 설명하면 다음과 같다.Preferably, a plurality of pinholes 33 penetrated to a predetermined size adjacent to the heating dot 32 may be formed on the main panel 31. The temperature and the degree of temperature increase by the composite dielectric heating plate 30 may be formed. The following description is made.
도 4에 도시된 바와 같이, 상기 메인패널(31) 자체에 의한 발열과 상기 히팅도트(32)에 의한 추가발열로 인해 고온 가열이 가능하게 되는데, 통상적인 유전체의 손실탄젠트(tanδ: 전자파가 전달되는 유전체의 재질에 의한 손실을 나타내는 지표)에 따라, 탄화규소(SiC)로 제작된 메인패널(31)에 의해서는 상온에 발열하여 대략 800℃ 전후로 가열이 이루어지고, 산화계 유전체로 제작된 히팅도트(32)에 의해서는 상기 메인패널(31)의 승온 한계를 넘어 1600℃ 정도의 고온 발열이 가능하게 된다.As shown in FIG. 4, high-temperature heating is possible due to the heat generated by the main panel 31 itself and the additional heat generated by the heating dot 32, and a loss tangent (tanδ) of a conventional dielectric is transmitted. The main panel 31 made of silicon carbide (SiC) generates heat at room temperature, heats around 800 ° C., and is a heating dot made of an oxidizing dielectric. By 32, high temperature heat generation of about 1600 ° C. is possible beyond the temperature limit of the main panel 31.
또한 본 발명은 히팅도트(32)에 첨가되는 몰리브덴 디실리사이드(MoSi2)의 비율을 조정함에 따라, 다양한 승온 범위를 갖는 복합유전체 발열판(30)의 제작이 가능할 뿐만 아니라 분당 70℃ 정도의 급속승온이 가능하고, 이로 인해 용도에 따라 최적화된 가열조건을 갖는 가열로(30)를 제공함과 동시에 전기로에 대비하여 대략 30% 정도의 전기료 절감이 가능하고, 전술된 바와 같은 저소비전력과 고가열효율에 의해 75kW 이상의 중대형급 가열로에서 적절하게 적용할 수 있게 된다.In addition, according to the present invention, by adjusting the ratio of molybdenum disilicide (MoSi 2 ) added to the heating dot 32, not only the production of the composite dielectric heating plate 30 having various temperature rising ranges is possible but also a rapid temperature increase of about 70 ° C. per minute. This is possible, thereby providing a heating furnace 30 having an optimized heating condition according to the use, and at the same time, it is possible to reduce electricity costs by about 30% compared to an electric furnace, and by the low power consumption and high heating efficiency as described above Applicable to medium and large furnaces of 75 kW or more.
도 5에 도시된 바와 같이, 본 발명의 복합유전체 발열판(30)에 의해서는 상기 메인패널(31) 자체에 의해 800℃ 정도로 1차 발열(a)이 진행된 후에, 상기 히팅도트(32)에 의해 1600℃에 이르도록 2차 발열(b)이 가능함과 동시에 상기 핀홀(33)에 의해서는 마이크로파가 통과되어 피가열물(H)의 표면 및 내부에 이르도록 마이크로파의 직접투과(c)가 이루어져 건조 또는 가열효과를 높이게 된다. As shown in FIG. 5, after the primary dielectric (a) proceeds to about 800 ° C. by the main panel 31 itself by the composite dielectric heating plate 30 of the present invention, the heating dot 32 is used. Secondary heat generation (b) is possible up to 1600 ° C and at the same time the microwave is passed through the pinhole 33 so that the direct transmission of the microwave (c) to reach the surface and inside of the heated object (H) is made Or increase the heating effect.
이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명백할 것이다.The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims (3)

  1. 히팅챔버(26)가 형성된 가열로본체(21)와;A heating furnace body 21 in which a heating chamber 26 is formed;
    상기 가열로본체(21) 상에 연결되어 마이크로파를 생성하도록 된 마그네트론(22)과;A magnetron 22 connected to the furnace body 21 to generate microwaves;
    상기 마그네트론(22)으로부터 가열로본체(21)에 이르도록 연장되어 상기 히팅챔버(26) 내에 마이크로파를 전달하도록 된 도파관(25)과;A waveguide (25) extending from the magnetron (22) to the furnace body (21) to transmit microwaves in the heating chamber (26);
    상기 히팅챔버(26) 내에 구비되어 마이크로파를 흡수하여 가열되도록 복수의 유전체를 함유하여 패널형태로 제작된 복합유전체 발열판(30)을 포함하여 이루어진 것을 특징으로 하는 복합유전체 발열판을 이용한 마이크로파 가열로.Microwave heating furnace using a composite dielectric heating plate, characterized in that it comprises a composite dielectric heating plate 30 is provided in the heating chamber 26 is formed in a panel form containing a plurality of dielectrics to absorb and heat the microwave.
  2. 제1항에 있어서, 상기 복합유전체 발열판(30)은 탄화규소(SiC)를 함유하여 일정 면적으로 형성된 메인패널(31)와;The composite dielectric heating plate (30) according to claim 1, further comprising: a main panel (31) formed of a predetermined area by containing silicon carbide (SiC);
    상기 메인패널(31) 상에 일정 크기로 삽입되는 복수개로 이루어지되, 산화알루미늄(Al2O3)을 포함한 산화계 유전체와 몰리브덴 디실리사이드(MoSi2)를 일정 비율로 혼합하여 제작된 히팅도트(32)를 포함하는 것을 특징으로 하는 복합유전체 발열판을 이용한 마이크로파 가열로.The heating dot 32 is made of a plurality of inserted into a predetermined size on the main panel 31, a mixture of an oxide-based dielectric including aluminum oxide (Al 2 O 3 ) and molybdenum dissilicide (MoSi 2 ) at a predetermined ratio. Microwave heating furnace using a composite dielectric heating plate comprising a).
  3. 제2항에 있어서, 상기 메인패널(31) 상에는 상기 히팅도트(32)와는 별도로 일정 크기로 관통된 복수개의 핀홀(33)이 더 형성된 것을 특징으로 하는 복합유전체 발열판을 이용한 마이크로파 가열로.[3] The microwave heating furnace of claim 2, wherein a plurality of pinholes 33 are formed on the main panel 31, the pinholes 33 penetrating through a predetermined size apart from the heating dot 32.
PCT/KR2018/005352 2018-04-02 2018-05-10 Microwave furnace using composite dielectric heating plate WO2019194348A1 (en)

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JP2010139217A (en) * 2008-12-15 2010-06-24 Yamamoto Vinita Co Ltd Heating method and heating equipment
KR101389727B1 (en) * 2013-10-15 2014-04-28 (주)삼익테크 Apparatus for dryness using micro wave
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KR101786720B1 (en) * 2016-08-16 2017-10-17 주식회사경기첨단인쇄디자인센터 Apparatus of bookbinding using microwave

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050080036A (en) * 2005-06-24 2005-08-11 김종현 Heat generate cooker for microwave
JP2010139217A (en) * 2008-12-15 2010-06-24 Yamamoto Vinita Co Ltd Heating method and heating equipment
US20150215996A1 (en) * 2012-08-22 2015-07-30 Otsuka Pharmaceutical Co., Ltd. Microwave heating device and firing facility
KR101389727B1 (en) * 2013-10-15 2014-04-28 (주)삼익테크 Apparatus for dryness using micro wave
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