JPS62122091A - Microwave heating furnace - Google Patents
Microwave heating furnaceInfo
- Publication number
- JPS62122091A JPS62122091A JP26227885A JP26227885A JPS62122091A JP S62122091 A JPS62122091 A JP S62122091A JP 26227885 A JP26227885 A JP 26227885A JP 26227885 A JP26227885 A JP 26227885A JP S62122091 A JPS62122091 A JP S62122091A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- microwave
- furnace
- generating wall
- wall material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の目的〕
吏果上旦机尻公国
本発明はマイクロ波により被加熱物を高温に加熱作用せ
しめる様にしたマイクロ波加熱炉、に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a microwave heating furnace in which an object to be heated is heated to a high temperature by microwaves.
孟米食技玉
従来かかるマイクロ波加熱炉は、断熱構成された炉体内
部に配置された被加熱物に対し、炉体の外部よりマイク
ロ波を被加熱物に直接照射せしめることにより被加熱物
自体を発熱作用せしめる様に成しているが、かかる形式
のマイクロ波Ｉｎ熱炉では被加熱物を直接発熱作用せし
めるものであるため、被加熱物がマイクロ波吸収性の少
ない物体である場合は照射されたマイクロ波が効率良く
熱に変換されず、熱効率が非常に悪く、従って被加熱物
を希望する高温状態に加熱作用せしめることが出来ず、
例えば陶磁器類の乾燥、焼成等の様に高温加熱を必要と
し且つマイクロ波吸収性の少ない物体の加熱用としては
効果的に活用することが出来なかった。Conventional microwave heating furnaces heat the object itself by directly irradiating the object with microwaves from outside the furnace body, which is placed inside a heat-insulated furnace body. However, in this type of microwave In heating furnace, the object to be heated is directly heated, so if the object to be heated is an object with low microwave absorption, it is difficult to irradiate it. The generated microwaves are not efficiently converted into heat, and the thermal efficiency is very poor, so the object to be heated cannot be heated to the desired high temperature state.
For example, it could not be effectively utilized for heating objects that require high-temperature heating and have low microwave absorption properties, such as drying and firing ceramics.
そこでマイクロ波吸収性の高い酸化亜鉛等の金属酸化物
をマイクロ波により加熱作用せしめ、この金属酸化物の
発熱に伴う輻射熱により炉体内部に配置した被加熱物を
間接的に加熱作用せしめて高温加熱を可能ならしめる様
にしたものとして特公告昭５９−２５９３７号公報、待
公告昭５９−２５９３８号公報に記載のマイク口波加熱
炉が見受けられるも、かかるマイクロ波加熱炉は内側容
器、金属酸化物の加熱体、外側容器を組み合わせた複雑
な構造より成るためコスト高になる等の欠点を有してい
た。Therefore, metal oxides such as zinc oxide, which have high microwave absorption properties, are heated by microwaves, and the radiant heat generated by the heat generated by these metal oxides indirectly heats the objects placed inside the furnace body, resulting in high temperatures. Microwave heating furnaces described in Japanese Patent Publication No. 59-25937 and Publication No. 59-25938 have been found to enable heating, but such microwave heating furnaces do not have an inner container, a metal Since it has a complicated structure combining an oxide heating element and an outer container, it has disadvantages such as high cost.
■が”°°シよ゛と る。 占
本発明は簡易な構造で而もマイクロ波の吸収効率の非常
に高い発熱壁材にて炉体を構成し、かかる発熱壁材によ
り効率の良いマイクロ波加熱を行わしめる様にしたマイ
クロ波加熱炉を提供せんとするものである。■ is "°°". According to the present invention, the furnace body is composed of a heat-generating wall material that has a simple structure and has a very high absorption efficiency of microwaves. It is an object of the present invention to provide a microwave heating furnace capable of performing wave heating.
口 占を”ンするための
本発明はかかる欠点に鑑み、炭素、炭化硅素等のマイク
ロ波吸収材と金属粒体を主体とする物質により耐熱性バ
インダーを介して発熱壁材を成形し、該発熱壁材にて炉
体の炉壁を構成すると共に発熱壁材の外周部にはマイク
ロ波透過性の断熱材を配設せしめ、該断熱材の外方には
発熱壁材に対向してマイクロ波照射装置を配設せしめた
マイクロ波加熱炉を提供して上記欠点を解消せんとした
ものである。In view of these drawbacks, the present invention aims to solve the problem by molding a heat-generating wall material using a material mainly consisting of a microwave absorbing material such as carbon or silicon carbide and metal particles through a heat-resistant binder. The furnace wall of the furnace body is made of heat-generating wall material, and a microwave-transmissive heat insulating material is provided on the outer periphery of the heat-generating wall material, and a microwave-transmitting heat insulating material is placed outside the heat-generating wall material facing the heat-generating wall material. The present invention aims to solve the above-mentioned drawbacks by providing a microwave heating furnace equipped with a wave irradiation device.
務−里
炉内空間内に加熱すべき被加熱物を収容せしめた後、発
熱壁材に対しマイクロ波を照射せしめると、該発熱壁材
中においてマイクロ波吸収材および金属粒体によりマイ
クロ波の殆どが吸収されるため発熱壁材自体が発熱し、
該発熱壁材の発熱に伴い炉壁から受ける輻射熱の作用に
より炉内空間に配置した被加熱物が間接的に加熱作用さ
れるのである。When the heat-generating wall material is irradiated with microwaves after the object to be heated is accommodated in the space inside the Mu-Sato furnace, the microwave absorbing material and metal particles in the heat-generating wall material absorb the microwaves. Most of it is absorbed, so the heat-generating wall material itself generates heat,
The objects to be heated disposed in the furnace space are indirectly heated by the action of radiant heat received from the furnace wall as the heat generating wall material generates heat.
裏施皿
以下本発明の一実施例を図面に基づいて説明すると、
１はマイクロ波加熱炉の炉体であり、所定の炉内空間２
を構成すべく板状の炉壁３．３ａ・・・を構築せしめて
いる。Below, an embodiment of the present invention will be described based on the drawings. 1 is a furnace body of a microwave heating furnace, and a predetermined furnace space 2
A plate-shaped furnace wall 3.3a is constructed to constitute the furnace wall.
上記炉壁３．３ａ・・・はマイクロ波吸収性の高い炭素
、炭化硅素を主体とするマイクロ波吸収材Ｍａと、鋳物
粉、真鍮扮、アルミナ粉等の適宜な金属粒体重により構
成せしめ、これを耐熱性を有する適宜なバインダーによ
り炉壁３．３ａ・・・に対応する形状に焼結成形せしめ
て発熱壁材４．４ａ・・・と成し、該発熱壁材４．４ａ
・・・自体により炉体１の炉壁３．３ａ・・・を構成せ
しめる様に成している。The furnace wall 3.3a... is composed of a microwave absorbing material Ma mainly composed of carbon and silicon carbide having high microwave absorption properties, and appropriate metal particles such as casting powder, brass powder, alumina powder, etc. This is sintered and formed into a shape corresponding to the furnace wall 3.3a... using a suitable heat-resistant binder to form a heat-generating wall material 4.4a...
... itself constitutes the furnace wall 3.3a of the furnace body 1.
尚、金属粒体Ｍｂの混入割合、材質は特に限定しないが
、材質としては炭素分を含有する鋳物扮等が最適である
。Incidentally, the mixing ratio of the metal particles Mb and the material thereof are not particularly limited, but the most suitable material is a cast metal material containing carbon.
又、発熱壁材４．４ａ・・・の外周部にはマイクロ波損
失の小さい物質により構成された繊維質の断熱材５を被
覆配置せしめて発熱壁材４．４ａ・・・の外方への熱量
輻射を遮断せしめる様に成し、更に発熱壁材４．４ａ・
・・の外方には炉体１の外部よりマイクロ波を誘導する
導波管６を介して発熱壁材４．４ａ・・・の任意の壁面
に対向位置せしめる様にしてマイクロ波照射装置７を配
設せしめている。In addition, a fibrous heat insulating material 5 made of a substance with low microwave loss is placed to cover the outer periphery of the heat-generating wall material 4.4a... to the outside of the heat-generating wall material 4.4a... It is designed to block the heat radiation of the heat generating wall material 4.4a.
A microwave irradiation device 7 is placed outside of the furnace body 1 through a waveguide 6 that guides microwaves from outside the furnace body 1 so as to face any wall surface of the heat-generating wall material 4.4a. are arranged.
又、炉体ｌは目的に応じて外装部材８により密閉状に被
覆せしめると共に、該外装部材８の内部空間に対し真空
ポンプ９を連繋せしめることにより炉体ｌの炉内空間２
内部を真空領域とすることも可能である。Further, the furnace body 1 is hermetically covered with an exterior member 8 according to the purpose, and a vacuum pump 9 is connected to the interior space of the exterior member 8, so that the inner space 2 of the furnace body 1 is closed.
It is also possible to make the inside a vacuum region.
次に本発明にかかるマイクロ波加熱炉の作用について説
明すると、炉内空間２内に加熱すべき被加熱物Ｗを収容
せしめた後、マイクロ波照射装置７を作動せしめて対向
する発熱壁材４．４ａ・・・に対しマイクロ波を照射せ
しめると、このマイクロ波は断熱材５を通して発熱壁材
４．４ａ・・・に照射作用され、該発熱壁材４．４ａ・
・・においてマイクロ波吸収材Ｍａが照射されたマイク
ロ波を吸収して発熱し、同時に金属粒体財が含有する炭
素成分により同様に発熱すると共に、マイクロ波を適度
に反射作用せしめてマイクロ波吸収成分での吸収効率が
活発化され、かかる発熱壁材４．４ａ・・・においてマ
イクロ波の殆どが吸収されることにより炉体１の炉壁３
．３ａ・・・を構成する発熱壁材４．４ａ・・・自体が
高温発熱し、該発熱壁材４．４ａ・・・の発熱に伴い炉
壁３．３ａ・・・から受ける輻射熱の作用により炉内空
間２内部に配置した被加熱物Ｍが間接的に加熱作用され
るのである。Next, the operation of the microwave heating furnace according to the present invention will be explained. After the object W to be heated is accommodated in the furnace space 2, the microwave irradiation device 7 is activated and the heating wall material 4 facing the heating wall 4 is activated. When microwaves are irradiated to .4a..., the microwaves are applied to the heat-generating wall materials 4.4a... through the heat insulating material 5, and the heat-generating wall materials 4.4a...
In ..., the microwave absorbing material Ma absorbs the irradiated microwave and generates heat, and at the same time, the carbon component contained in the metal particles generates heat as well, and the microwave is absorbed by moderately reflecting the microwave. The absorption efficiency of the components is activated, and most of the microwaves are absorbed in the heat-generating wall material 4.4a, so that the furnace wall 3 of the furnace body 1
．． The heat-generating wall material 4.4a... which constitutes the heat-generating wall material 4.4a... itself generates heat at a high temperature, and due to the action of radiant heat received from the furnace wall 3.3a... due to the heat generation of the heat-generating wall material 4.4a... The object to be heated M placed inside the furnace space 2 is indirectly heated.
要するに本発明は、炭素、炭化硅素等のマイクロ波吸収
材Ｍａと金属粒体肚を主体とする物質により耐熱性バイ
ンダーを介して発熱壁材４．４ａ・・・を成形し、該発
熱壁材４．４ａ・・・にて炉体１の炉壁３．３ａ・・・
を構成せしめたので、マイクロ波の照射により効率的に
発熱作用される発熱壁材４．４ａ・・・自体が炉壁３．
３ａ・・・を構成しているため、炉内空間２内部に配置
される被加熱物Ｍを炉壁３．３ａ・・・全体の輻射熱作
用により効果的に加熱作用せしめることが出来、よって
マイクロ波吸収性の少ない被加熱物Ｗに対しても発熱壁
材４．４ａ・・・の耐熱性に対応しても効率良くマイク
ロ波加熱することが出来、又発熱壁材４．４ａ・・・の
外周部にはマイクロ波透過性の断熱材５を配設せしめ、
該断熱材５の外方には発熱壁材４．４ａ・・・に対向し
てマイクロ波照射装置７を配設せしめたので、発熱壁材
４．４ａ・・・に対する外方からのマイクロ波照射に際
しマイクロ波を減衰せしめることなく照射出来ると共に
、発熱壁材４．４ａ・・・の外方への熱拡散を防止して
効率的な加熱を行わしめることが出来、又発熱壁材４．
４ａ・・・にはマイクロ波吸収材Ｍａと共に金属粒体重
が混入されているため、金属粒体重がマイクロ波を適度
に反射作用せしめてマイクロ波吸収成分での吸収効率を
活発化し、よって発熱効率を一層向上せしめることが出
来、又炉体１の構成も発熱壁材４．４ａ・・・自体が炉
壁３．３ａ・・・を兼用しているため発熱壁材４．４ａ
・・・と断熱材５による簡易な構造となり、よってコス
ト安の加熱炉として陶磁器その他の焼成、乾燥用として
広範囲に活用せしめることが出来る等その実用的効果甚
だ大なるものである。In short, the present invention involves forming the heat-generating wall material 4.4a by using a material mainly consisting of a microwave absorbing material Ma such as carbon or silicon carbide and metal grains through a heat-resistant binder. Furnace wall 3.3a of furnace body 1 at 4.4a...
Since the heat-generating wall material 4.4a is configured to generate heat efficiently by microwave irradiation, the heat-generating wall material 4.4a itself becomes the furnace wall 3.
3a..., the object to be heated M placed inside the furnace space 2 can be effectively heated by the radiant heat action of the entire furnace wall 3.3a... Even if the heated object W with low wave absorption property is compatible with the heat resistance of the heat generating wall material 4.4a..., microwave heating can be performed efficiently, and the heat generating wall material 4.4a... A microwave-transparent heat insulating material 5 is disposed on the outer periphery of the
Since the microwave irradiation device 7 is disposed outside the heat insulating material 5 facing the heat generating wall materials 4.4a, the microwaves from the outside are not applied to the heat generating wall materials 4.4a. During irradiation, microwaves can be irradiated without attenuation, and heat diffusion to the outside of the heat-generating wall material 4.4a can be prevented to perform efficient heating, and the heat-generating wall material 4.4a.
Since the weight of metal particles is mixed in 4a... with the microwave absorbing material Ma, the weight of the metal particles moderately reflects the microwaves and activates the absorption efficiency of the microwave absorption component, thereby increasing the heat generation efficiency. In addition, the structure of the furnace body 1 is such that the heat generating wall material 4.4a... itself also serves as the furnace wall 3.3a...
It has a simple structure with the heat insulating material 5, and therefore has great practical effects, such as being able to be widely used as a low-cost heating furnace for firing and drying ceramics and other materials.
図は本発明の一実施例を示すものにして、第１図は本発
明に係るマイクロ波加熱炉の断面図である。The figure shows one embodiment of the present invention, and FIG. 1 is a sectional view of a microwave heating furnace according to the present invention.
Claims (1)
とする物質により耐熱性バインダーを介して発熱壁材を
成形し、該発熱壁材にて炉体の炉壁を構成すると共に発
熱壁材の外周部にはマイクロ波透過性の断熱材を配設せ
しめ、該断熱材の外方には発熱壁材に対向してマイクロ
波照射装置を配設せしめたことを特徴とするマイクロ波
加熱炉。A heat-generating wall material is formed using a material mainly consisting of a microwave absorbing material such as carbon or silicon carbide and metal particles through a heat-resistant binder, and the heat-generating wall material constitutes the furnace wall of the furnace body. Microwave heating characterized in that a microwave-transparent heat insulating material is disposed on the outer periphery of the material, and a microwave irradiation device is disposed outside the heat insulating material facing the heat-generating wall material. Furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26227885A JPS62122091A (en) | 1985-11-21 | 1985-11-21 | Microwave heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26227885A JPS62122091A (en) | 1985-11-21 | 1985-11-21 | Microwave heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62122091A true JPS62122091A (en) | 1987-06-03 |
Family
ID=17373568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26227885A Pending JPS62122091A (en) | 1985-11-21 | 1985-11-21 | Microwave heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62122091A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2612033A1 (en) * | 1986-02-27 | 1988-09-09 | Matsubara Yuzuru | Methods for producing heat with microwaves |
| JP2010029664A (en) * | 2008-07-29 | 2010-02-12 | Ivoclar Vivadent Ag | Apparatus for heating molded member such as dental ceramic molded member in particular |
| JP2014067575A (en) * | 2012-09-26 | 2014-04-17 | Micro Denshi Kk | Heating device to which microwaves are applied |
-
1985
- 1985-11-21 JP JP26227885A patent/JPS62122091A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2612033A1 (en) * | 1986-02-27 | 1988-09-09 | Matsubara Yuzuru | Methods for producing heat with microwaves |
| JP2010029664A (en) * | 2008-07-29 | 2010-02-12 | Ivoclar Vivadent Ag | Apparatus for heating molded member such as dental ceramic molded member in particular |
| JP2014067575A (en) * | 2012-09-26 | 2014-04-17 | Micro Denshi Kk | Heating device to which microwaves are applied |
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