JP2002370233A - Heating furnace - Google Patents
Heating furnaceInfo
- Publication number
- JP2002370233A JP2002370233A JP2001220680A JP2001220680A JP2002370233A JP 2002370233 A JP2002370233 A JP 2002370233A JP 2001220680 A JP2001220680 A JP 2001220680A JP 2001220680 A JP2001220680 A JP 2001220680A JP 2002370233 A JP2002370233 A JP 2002370233A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- small window
- furnace
- furnace chamber
- wall
- 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.)
- Granted
Links
Landscapes
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、プラスチック材
料等のワークを加熱や乾燥等するためにに用いる加熱炉
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating furnace used for heating or drying a work such as a plastic material.
【０００２】[0002]
【従来の技術】この種の加熱炉として、炉壁に炉室へ通
じる開口を設け、この開口から炉室内へワークを支持す
るキャリヤを出入自在とし、キャリヤを炉室内へ送り込
んでワークを所定温度の熱風等により所定時間加熱した
後、炉室からキャリヤを引き出してワークを取り出すよ
うになっているものは公知である。この炉室内にはファ
ンが設けられ、炉室内の空気を強制的に循環させるよう
になっている。2. Description of the Related Art As a heating furnace of this kind, an opening is provided in a furnace wall to a furnace chamber, a carrier for supporting a work is allowed to enter and leave the furnace chamber through this opening, and the carrier is sent into the furnace chamber to be heated to a predetermined temperature. After heating for a predetermined time by hot air or the like, the carrier is drawn out of the furnace chamber to take out the work. A fan is provided in the furnace chamber to force the air in the furnace chamber to circulate.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記加熱炉
のように構成すると、キャリヤの出入時に開口が大きく
開放される結果、室温の外気が炉室内に流入するので、
炉内の急激な温度低下を招くことになり、ワークの出し
入れを終えて炉室開閉扉を閉めた後から炉室内が所定温
度に復帰するまで著しく長い時間を必要とする。殊に、
炉室内空気をファンにて強制循環する形式では、熱の散
逸を抑制するためキャリヤの出入時にファンを停止しな
ければならないので、炉内の温度分布が不均一になり、
その後における炉室内温度の復帰までにやはり時間を要
することになった。By the way, when the heating furnace is configured as described above, the opening is largely opened when the carrier enters and exits, so that the outside air at room temperature flows into the furnace chamber.
The temperature inside the furnace will drop sharply, and it will take an extremely long time until the furnace chamber returns to a predetermined temperature after closing the furnace chamber opening door after loading and unloading the work. In particular,
In the type in which the air in the furnace chamber is forcedly circulated by a fan, the fan must be stopped when the carrier enters and exits to suppress heat dissipation, so the temperature distribution in the furnace becomes uneven,
After that, it took time to return the furnace chamber temperature.
【０００４】このように炉内温度が大きく変化すると、
エネルギーロスが大きくなり、加熱時間も著しく長くな
る。また、炉室開閉扉付近は扉を開いたとき熱風にさら
されるため作業環境が悪化し、ワークの正確なセットや
取り出しを困難にしていた。そのうえ、加熱条件が一定
せず正確にワークを加熱できないので、製品の品質がば
らつくことになった。特に加熱条件を設定するための加
熱テストの場合に正確な再現性のあるデータを得られな
かった。そこで、本願発明は係る問題点の解決を目的と
する。[0004] When the furnace temperature greatly changes as described above,
The energy loss increases and the heating time also increases significantly. Further, the vicinity of the furnace chamber opening / closing door is exposed to hot air when the door is opened, thus deteriorating the working environment and making it difficult to accurately set and take out the work. In addition, since the heating conditions were not constant and the workpiece could not be accurately heated, the quality of the product varied. In particular, in the case of a heating test for setting heating conditions, accurate reproducible data could not be obtained. Therefore, an object of the present invention is to solve such a problem.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
本願発明に係る加熱炉は、炉壁に設けたキャリヤ出入口
からキャリヤを炉室内へ出入自在にした加熱炉におい
て、前記キャリヤ出入口は、炉室全体の前側開口部を覆
う前面壁の一部に設けられ、前記前側開口部よりも小さ
な開口面積を有する小窓部であり、前記キャリヤを炉内
へ送り込んだとき前記キャリヤの一部で前記小窓部を覆
うとともに、前記キャリヤを引き出したときは前記キャ
リヤの一部又はキャリヤと別に設けた開閉部材で前記小
窓部を覆うことを特徴とする。In order to solve the above-mentioned problems, a heating furnace according to the present invention is a heating furnace in which a carrier can freely enter and exit a furnace chamber from a carrier entrance and exit provided on a furnace wall. A small window having a smaller opening area than the front opening, the small window being provided on a part of a front wall covering a front opening of the entire chamber, and a part of the carrier when the carrier is fed into a furnace. The small window portion is covered, and when the carrier is pulled out, the small window portion is covered with a part of the carrier or an opening / closing member provided separately from the carrier.
【０００６】このとき、前記キャリヤの出入時手前側と
なる部分に前側シール壁を設け、かつ前記キャリヤの出
入時手奥側となる部分に後側シール壁を設け、これら前
側シール壁又は後側シール壁により前記キャリヤの出入
時に前記小窓部を覆うようにしてもよいい。At this time, a front seal wall is provided in a portion which is on the near side when the carrier enters and exits, and a rear seal wall is provided in a portion which is on the back side when the carrier enters and exits. The small window may be covered by a sealing wall when the carrier enters and exits.
【０００７】また、前記キャリヤ引き出し時に前記小窓
部を覆う開閉部材を、前記小窓部へ設けられ、前記キャ
リヤの出入に応じて自動又は手動で開閉する小窓扉とす
ることもできる。[0007] An opening / closing member for covering the small window portion when the carrier is pulled out may be a small window door provided on the small window portion and automatically or manually opened and closed according to the entry and exit of the carrier.
【０００８】さらに、前記キャリヤを棚又は引き出し状
に形成することができる。また前記キャリヤを複数設け
るとともに、このキャリヤの数に応じて前記小窓部を複
数設けたこともできる。Further, the carrier can be formed in a shelf or drawer shape. A plurality of the carriers may be provided, and a plurality of the small window portions may be provided according to the number of the carriers.
【０００９】[0009]
【発明の効果】本願発明は、キャリヤ出入口を、炉室全
体の前側開口部を覆う前面壁の一部に設けられ、前側開
口部よりも小さな開口面積を有する小窓部としたので、
キャリヤの出入に伴う炉室の開口面積を可及的に小さく
できる。そのうえ、キャリヤを炉内へ送り込んだときそ
の一部で小窓部を覆うとともに、キャリヤを引き出した
ときはその一部又はキャリヤと別に設けた開閉部材で小
窓部を覆うので、小窓部の開放時間を極力短縮できる。According to the present invention, the carrier entrance / exit is a small window provided on a part of the front wall covering the front opening of the entire furnace chamber and having an opening area smaller than the front opening.
The opening area of the furnace chamber upon entry and exit of the carrier can be made as small as possible. In addition, when the carrier is sent into the furnace, a part of the small window is covered, and when the carrier is drawn out, the small window is covered by a part thereof or an opening / closing member provided separately from the carrier. The opening time can be reduced as much as possible.
【００１０】したがって、キャリヤの出入に伴う熱の散
逸を抑制してエネルギーロスを抑制できる。また、炉内
の急激な温度低下を防ぎ、ワークの出し入れを終えた後
において炉室内が所定温度に復帰する時間を著しく短縮
できる。そのうえ、ファンを設けた場合でもキャリヤの
出入時にファンを停止しなけくても済むので、炉室内温
度の復帰時間をさらに短縮できる。Therefore, it is possible to suppress the dissipation of heat due to the entry and exit of the carrier, thereby suppressing the energy loss. Further, it is possible to prevent a rapid decrease in the temperature inside the furnace, and to remarkably reduce the time required for the furnace chamber to return to a predetermined temperature after the work is taken in and out. In addition, even when a fan is provided, it is not necessary to stop the fan when the carrier enters and exits, so that the time for restoring the furnace chamber temperature can be further reduced.
【００１１】さらに、加熱炉の外へ流出する熱風が少な
くなるので、キャリヤ出入口近傍における作業環境が改
善され、ワークの正確なセットや取り出しを容易にす
る。そのうえ、加熱条件が一定するので、正確にワーク
を加熱できるようになり製品の品質を安定させることが
できる。特に加熱条件を設定するための加熱テストの場
合に正確な再現性のあるデータを得ることができる。Further, since the amount of hot air flowing out of the heating furnace is reduced, the working environment in the vicinity of the entrance of the carrier is improved, and the work can be accurately set and taken out easily. In addition, since the heating conditions are constant, the workpiece can be accurately heated, and the quality of the product can be stabilized. Particularly, in the case of a heating test for setting heating conditions, accurate and reproducible data can be obtained.
【００１２】また、キャリヤの出入時手前側となる部分
に前側シール壁を設け、奥側となる部分に後側シール壁
を設ければ、キャリヤを炉室内へ送り込んだときは前側
シール壁で小窓部を覆い、逆にキャリヤを引き出したと
きは後側シール壁により小窓部を覆うことができるの
で、小窓部の開閉部材としてキャリヤを有効利用でき、
特別の小窓部用開閉部材を設けなくても済む。Further, if a front seal wall is provided in a portion on the front side when the carrier enters and exits, and a rear seal wall is provided in a portion on the back side, when the carrier is sent into the furnace chamber, the front seal wall is small. When the carrier is drawn out and the carrier is drawn out, the small window can be covered by the rear seal wall, so that the carrier can be effectively used as an opening and closing member for the small window,
There is no need to provide a special small window opening / closing member.
【００１３】これに対して、キャリヤ引き出し時に小窓
部を開閉自在に覆う小窓扉を設け、キャリヤの出入に応
じて自動又は手動で開閉するようにすれば、キャリヤに
後側シール壁を設けなくても済むため、キャリヤ構造の
自由度が高くなり、キャリヤを小窓部へ差し込み易くな
る。On the other hand, if a small window door is provided so as to open and close the small window portion when the carrier is drawn out, and the door is automatically or manually opened and closed according to the entry and exit of the carrier, a rear seal wall is provided on the carrier. Since there is no need to do so, the degree of freedom of the carrier structure is increased, and the carrier can be easily inserted into the small window.
【００１４】さらに、キャリヤを棚又は引き出し状に形
成すれば、ワークに応じた支持構造を採用できる。また
キャリヤを複数設けるとともに、このキャリヤの数に応
じて小窓部を複数設ければ、一度に大量のワークを扱え
るとともに、キャリヤ出入時の開口面積を可及的に小さ
くできる。Further, if the carrier is formed in a shelf or drawer shape, a support structure according to the work can be adopted. If a plurality of carriers are provided and a plurality of small windows are provided in accordance with the number of the carriers, a large amount of work can be handled at a time, and the opening area when the carrier enters and exits can be reduced as much as possible.
【００１５】[0015]
【発明の実施の形態】以下、図面に基づいて一実施例を
説明する。図１は本実施例に係る加熱炉の縦断面図、図
２はその横断面図（図１の２−２線断面）、図３はキャ
リヤを引き出した状態の図１に対応する図、図４は加熱
炉の正面（図１のＡ矢示方向）図、図５はキャリヤ出入
時の温度変化を従来例とともに示すグラフである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings. 1 is a longitudinal sectional view of a heating furnace according to the present embodiment, FIG. 2 is a transverse sectional view thereof (a sectional view taken along line 2-2 in FIG. 1), and FIG. 3 is a view corresponding to FIG. 4 is a front view of the heating furnace (in the direction indicated by the arrow A in FIG. 1), and FIG. 5 is a graph showing a change in temperature at the time of entering and exiting the carrier together with a conventional example.
【００１６】この加熱炉は１は、乾燥や種々の加熱処理
（例えば、発泡塩ビ等の発泡や熱硬化樹脂の熱硬化な
ど）に使用される熱風炉であり、炉室２内に所定温度の
熱風をファン３にて強制的に循環させるようになってい
る。但し、加熱炉の加熱形式は遠赤外線を用いる等種々
の方式が可能である。The heating furnace 1 is a hot blast furnace used for drying and various heat treatments (for example, foaming of a foamed PVC or the like or thermosetting of a thermosetting resin). The hot air is forcibly circulated by the fan 3. However, the heating system of the heating furnace can employ various systems such as using far infrared rays.
【００１７】この炉室２を囲む炉壁４の一部であり、炉
室２の前面側に臨む炉室全体の開口部である前側開口部
２ａを覆う前面壁４ａに小窓部５が設けられ、この小窓
部５を通して炉室２が外部と連通される。小窓部５を囲
む前面壁４ａの肉厚部分は、炉室２側へ向かって次第に
小窓部５の中央へせり出す曲面６をなし、この曲面６の
うち最も炉室２側の部分は小窓部５の間口を最も狭める
突出部７になっている。A small window 5 is provided on a front wall 4a which is a part of a furnace wall 4 surrounding the furnace chamber 2 and covers a front opening 2a which is an opening of the entire furnace chamber facing the front side of the furnace chamber 2. The furnace chamber 2 is communicated with the outside through the small window 5. The thick portion of the front wall 4a surrounding the small window portion 5 forms a curved surface 6 which gradually projects toward the center of the small window portion 5 toward the furnace chamber 2 side, and the portion of the curved surface 6 closest to the furnace chamber 2 is small. The projecting portion 7 narrows the frontage of the window portion 5 most.
【００１８】突出部７は、炉室２の上壁４ｂ及び底壁４
ｃとの間にそれぞれ段差８をなし、この段差８は上壁４
ｂ及び底壁４ｃに対して直交する小窓部５へ向かって一
段高くなった平面であり、図２に示すように前面壁４ａ
の内面と同一面で連続している。なお、小窓部５は前面
壁４ａの一部に左右方向へ偏って設けられ、左右の側壁
４ｄの一方から隔たって設けられている。The protruding portion 7 is provided between the upper wall 4b and the bottom wall 4 of the furnace chamber 2.
c between the upper wall 4 and the upper wall 4.
b and the bottom wall 4c, the plane is raised one step toward the small window portion 5, and as shown in FIG.
It is continuous on the same plane as the inner surface. The small window portion 5 is provided on a part of the front wall 4a so as to be deviated in the left-right direction, and is provided apart from one of the left and right side walls 4d.
【００１９】炉室２内にはキャリヤ１０が小窓部５から
出入自在になっている。キャリヤ１０は、ワーク（図示
省略）を支持するための台車状の部材であり、ワークを
支持する本体部１１を備え、小窓部５を通過できる大き
さになっている。A carrier 10 can freely enter and exit through the small window 5 in the furnace chamber 2. The carrier 10 is a cart-shaped member for supporting a work (not shown), has a main body 11 for supporting the work, and has a size that allows the small window 5 to pass through.
【００２０】なお、本願において前後方向とは、キャリ
ヤ１０の出入方向を指し、キャリヤ１０についてはその
出入時手前側を前側、奥側を後側という。また加熱炉に
ついては小窓部５側を前側、炉室２の内部奥側でキャリ
ヤ１０の後部が臨む側を後側というものとする。In the present application, the front-back direction refers to the direction in which the carrier 10 enters and exits, and the front side of the carrier 10 at the time of entry and exit is referred to as the front side, and the rear side is the rear side. Regarding the heating furnace, the small window 5 side is referred to as a front side, and the rear side of the inside of the furnace chamber 2 where the rear of the carrier 10 faces is referred to as a rear side.
【００２１】キャリヤ１０の加熱炉１外側に位置する部
分には開閉用扉１２が設けられ、小窓部５の周囲の前面
壁４ａの外面へ当接する大きさになっている。開閉用扉
１２の中央部にはハンドル１３が設けられ、開閉用扉１
２の下部にはキャスター１４が設けられる。キャスター
１４は前面壁４ａより外側の床面上を移動する。An opening / closing door 12 is provided at a portion of the carrier 10 located outside the heating furnace 1, and is sized to abut the outer surface of the front wall 4 a around the small window 5. A handle 13 is provided at the center of the opening / closing door 12, and the opening / closing door 1 is provided.
A caster 14 is provided below 2. The casters 14 move on the floor outside the front wall 4a.
【００２２】開閉用扉１２と本体部１１との間は炉壁３
の肉厚分程度の幅をなす連結部１５が設けられ、連結部
１５と本体部１１との間に前側シール壁１６が設けられ
る。前側シール壁１６は小窓部５とほぼ同形同寸に形成
された耐熱材料製であって、突出部７よりも手前側に位
置し、キャリヤ１０を炉室２内へ送り込んだとき、開閉
用扉１２が炉壁４の前面壁４ａへ当接すると同時に突出
部７近傍の曲面６へ周囲が気密に当接するようになって
いる。The furnace wall 3 is provided between the opening / closing door 12 and the main body 11.
A connecting portion 15 having a width of about the thickness of the connecting portion 15 is provided, and a front sealing wall 16 is provided between the connecting portion 15 and the main body 11. The front sealing wall 16 is made of a heat-resistant material formed to have the same shape and the same size as the small window portion 5, is located on the front side of the projecting portion 7, and opens and closes when the carrier 10 is sent into the furnace chamber 2. At the same time as the door 12 comes into contact with the front wall 4a of the furnace wall 4, the periphery comes into contact with the curved surface 6 near the protruding portion 7 in an airtight manner.
【００２３】本体部１１の炉室内最奥側となる後部にも
後側シール壁１７が設けられ、その下部には耐熱材料で
作られたキャスター１８が設けられる。後側シール壁１
７は小窓部５よりも若干大きく形成され、キャリヤ１０
を炉室２を引き出したとき、小窓部５を囲む段差８及び
前面壁４ａの内面へ周囲が気密に当接して小窓部５を閉
じるようになっている。キャスター１８は底壁４ｃ上を
移動し、このときキャリヤ１０が略水平になるようキャ
スター１４との間で高さ調節される。A rear seal wall 17 is also provided on the rearmost part of the main body 11 which is the innermost side of the furnace chamber, and a caster 18 made of a heat-resistant material is provided below the rear seal wall 17. Rear seal wall 1
7 is formed slightly larger than the small window portion 5, and the carrier 10
When the furnace chamber 2 is pulled out, the small window 5 is closed by airtightly contacting the step 8 surrounding the small window 5 and the inner surface of the front wall 4a. The casters 18 move on the bottom wall 4c, and at this time, the height between the casters 14 is adjusted so that the carrier 10 is substantially horizontal.
【００２４】図４に示すように、小窓部５の開口部横幅
Ｗ１は、炉室全体における前側開口部２ａの横幅Ｗ２よ
りも著しく小さく、かつそれぞれの開口部の上下幅は比
較的近似したものになっている。その結果、小窓部５の
開口面積は、炉室全体における前側開口部２ａの開口面
積よりも著しく小さくなっている。また、小窓部５を覆
う前側シール壁１６（及び後側シール壁１７）は小窓部
５の開口部における形状及び大きさにほぼ近似してい
る。As shown in FIG. 4, the width W1 of the opening of the small window 5 is significantly smaller than the width W2 of the front opening 2a in the entire furnace chamber, and the vertical width of each opening is relatively similar. It has become something. As a result, the opening area of the small window part 5 is significantly smaller than the opening area of the front opening part 2a in the entire furnace chamber. Further, the front seal wall 16 (and the rear seal wall 17) covering the small window portion 5 is almost similar to the shape and size of the opening of the small window portion 5.
【００２５】次に、本実施例の作用を説明する。例えば
壁紙用の発泡塩ビシートに対する発泡テストをおこなう
場合、あらかじめ炉室２内を熱風により発泡に適した所
定温度、例えば４００℃に昇温しておくとともに、炉室
２から引き出したキャリヤ１０に発泡塩ビシートをワー
クとして本体部１１へ吊り下げ等により支持させる。Next, the operation of this embodiment will be described. For example, when performing a foaming test on a foamed PVC sheet for wallpaper, the inside of the furnace chamber 2 is previously heated to a predetermined temperature suitable for foaming, for example, 400 ° C., by hot air, and foamed on the carrier 10 drawn out of the furnace chamber 2. The PVC sheet is supported as a work on the main body 11 by hanging or the like.
【００２６】このとき、図３に明らかなように、前側シ
ール壁１６は小窓部５を開放しているが、後側シール壁
１７の周囲がが小窓部５を囲む段差８及び前面壁４ａの
内面へ気密に当接して小窓部５を閉じているため、炉室
２の炉内温度は一定になっている。At this time, as is apparent from FIG. 3, the front sealing wall 16 opens the small window portion 5, but the periphery of the rear sealing wall 17 has the step 8 surrounding the small window portion 5 and the front wall. Since the small window portion 5 is closed by airtightly contacting the inner surface of the furnace 4a, the furnace temperature of the furnace chamber 2 is constant.
【００２７】この状態でキャリヤ１０を小窓部５から炉
室２内へ送り込むと、後側シール壁１７が小窓部５の周
囲から離れて瞬間的に小窓部５を介して炉室２と外部と
を連通するが、図１に明らかなように、直ちに前側シー
ル壁１６の周囲が突出部７の曲面６へ気密に接触して小
窓部５を閉じる。このとき、前側シール壁１６の周囲は
突出部７近傍の曲面６へ当接するので、一種のテーパー
合わせにより気密かつ迅速に密接できる。In this state, when the carrier 10 is fed into the furnace chamber 2 from the small window 5, the rear seal wall 17 is separated from the periphery of the small window 5 and momentarily passes through the small window 5 through the furnace chamber 2. As shown in FIG. 1, the periphery of the front seal wall 16 immediately comes into contact with the curved surface 6 of the protrusion 7 in an airtight manner to close the small window portion 5. At this time, the periphery of the front seal wall 16 abuts on the curved surface 6 in the vicinity of the protruding portion 7, so that it can be airtight and quickly contacted by a kind of taper alignment.
【００２８】したがって、炉室２の炉内温度にほとんど
変化を生じさせずに炉室２内へ本体部１１を送り込むこ
とができ、本体部１１を所定時間炉室２内へ置くことに
よりワークを加熱して発泡テストを完了する。Therefore, the main body 11 can be sent into the furnace chamber 2 with almost no change in the furnace temperature of the furnace chamber 2. Heat to complete foaming test.
【００２９】その後、ハンドル１３をもって、キャリヤ
１０を引き出すと、一瞬、前側シール壁１６が突出部７
近傍の曲面７から離れて小窓部５を開放し、外部と炉室
２内が連通するが、図３に明らかなように、直ちに後側
シール壁１７が小窓部５の周囲へ気密に接触して小窓部
５を閉じるため、炉室２の炉内温度変化を極小に止め
る。Thereafter, when the carrier 10 is pulled out with the handle 13, the front seal wall 16 is momentarily
The small window portion 5 is opened away from the curved surface 7 in the vicinity, and the outside and the inside of the furnace chamber 2 communicate with each other. As is apparent from FIG. 3, the rear sealing wall 17 is immediately airtightly sealed around the small window portion 5. In order to close the small window part 5 by contact, the temperature change in the furnace of the furnace chamber 2 is minimized.
【００３０】このように本実施例は、前側シール壁１６
と後側シール壁１７を設けて出入時のいずれでも小窓部
５を閉じるようにしたので、キャリヤ１０の本体部１１
を炉室２内へ出入させても、炉室２内の炉内温度変化を
ほとんど生じないようにできるので、本実施例の発泡テ
ストの場合は、正確な加熱温度でテストでき、信頼性の
高いデータを得ることができる。As described above, in the present embodiment, the front seal wall 16
And the rear sealing wall 17 is provided to close the small window portion 5 both in and out, so that the main body 11 of the carrier 10 can be closed.
Can be made to hardly change in the furnace temperature in the furnace chamber 2 even if the gas flows into and out of the furnace chamber 2. In the case of the foaming test of this embodiment, the test can be performed at an accurate heating temperature and the reliability can be improved. High data can be obtained.
【００３１】従来の加熱炉では、例えば棚や網に直接置
いて実験又は製造が不都合な、接触できないワークワー
クの加熱等において、炉室２内の定位置にセットすると
きに思わぬ時間を要すなどして、扉を開いた状態がその
都度長くなったり短くなったりしてしまい、発泡条件等
の微妙なデータの再現性の点で不満足である。The conventional heating furnace requires an unexpectedly long time when it is set at a fixed position in the furnace chamber 2, for example, in the case of heating a work that cannot be contacted because it is placed directly on a shelf or a net and is inconvenient for experiments or production. For example, the state in which the door is opened becomes longer or shorter each time, which is unsatisfactory in reproducibility of delicate data such as foaming conditions.
【００３２】また、例えば液晶フィルムの加熱等におい
て、仮に恒温時間を一定としも扉の開閉時間の長短が物
性の上昇条件の差異となり、ポットライフが加工条件の
重要な要素となる場合に恒温時間の一定だけでは、再現
性、上昇カーブの重要性の把握に不安がある。In addition, for example, in the case of heating a liquid crystal film, even if the constant temperature time is fixed, the length of the opening and closing time of the door becomes a difference in the condition for increasing the physical properties. There is anxiety about the reproducibility and the importance of the ascending curve if only a certain level is set.
【００３３】しかしながら、本願発明によれば、接触で
きないワークは、炉外でキャリヤ１０の定位置にセット
することが可能となり、サンプルの出し入れにおいて、
ほとんど恒温状態での実験や製造が可能になる。However, according to the present invention, a workpiece that cannot be contacted can be set at a fixed position on the carrier 10 outside the furnace, so that a sample can be taken in and out.
Experiments and production under almost constant temperature conditions become possible.
【００３４】さらに、このように本体部１１を炉室２内
へ出入させても、炉室２内の高温の雰囲気がほとんど逃
げることはなく、かつ低温の外気が炉室２内の高温の雰
囲気に混入することがほとんど生じないので、その出入
させる際のエネルギーのロスは非常に小さい。また、本
体部１１を炉室２内へ出入させても、小窓部５の近傍に
おける作業環境を改善でき、加熱炉１の外部にて本体部
１１に対するワークのセットや取り出し等の操作を余裕
をもってできる。Further, even when the main body 11 is moved into and out of the furnace chamber 2 as described above, the high-temperature atmosphere in the furnace chamber 2 hardly escapes, and the low-temperature outside air is removed from the high-temperature atmosphere in the furnace chamber 2. Since energy is hardly mixed with the water, the loss of energy at the time of the movement is very small. Further, even when the main body 11 is moved into and out of the furnace chamber 2, the working environment in the vicinity of the small window 5 can be improved, and the operation such as setting and taking out the work with respect to the main body 11 outside the heating furnace 1 can be afforded. Can be done with
【００３５】そのうえ、図２に明らかなように、小窓部
５は炉室２の幅に対して比較的小さく、炉室２内の熱量
が十分に大きいため、本実施例のように小窓部５を短時
間開放した程度ではほとんど炉内温度に変化を生じさせ
ないようにできる。しかも、キャリヤ１０の出入時にも
ファン３を停止せずに炉室２の内部空気を強制循環でき
るので、これによっても炉室２の炉内温度を均一化させ
ておくことができる。Further, as is apparent from FIG. 2, the small window portion 5 is relatively small with respect to the width of the furnace chamber 2 and the amount of heat in the furnace chamber 2 is sufficiently large. If the part 5 is opened for a short time, the temperature in the furnace can hardly be changed. In addition, the air inside the furnace chamber 2 can be forcibly circulated without stopping the fan 3 even when the carrier 10 moves in and out, so that the furnace temperature in the furnace chamber 2 can be made uniform.
【００３６】図５は、炉内を１００℃に加熱した恒温状
態で、キャスターを出入したときの炉内における温度変
化を従来例と比較したグラフである。まず上段のＡに示
す従来例では、恒温状態（約１００℃）からキャリヤを
短時間引き出した後すぐ炉内へ戻すと、温度最降下点ａ
では約１０℃の低下が見られる。またキャリヤを戻して
から恒温状態に復帰するポイントｂまでに約６０秒を要
する。なおポイントａのキャリヤ操作はワークのセット
を意味するので、その後取り出しのために再びキャリヤ
を操作することになり、このときポイントｃなるａと同
様の温度降下が生じる。FIG. 5 is a graph comparing the temperature change in the furnace when a caster is moved in and out of the furnace in a constant temperature state where the inside of the furnace is heated to 100 ° C. with the conventional example. First, in the conventional example shown in the upper part A, when the carrier is pulled out of the constant temperature state (about 100 ° C.) for a short time and then returned to the furnace immediately, the temperature drop point a
Shows a decrease of about 10 ° C. Also, it takes about 60 seconds from the return of the carrier to the point b where the temperature returns to the constant temperature state. Since the carrier operation at the point a means the setting of the work, the carrier is operated again for taking out after that, and at this time, the same temperature drop as the a at the point c occurs.
【００３７】これに対して、下段のＢに示す本実施例で
は、同様に操作したとき、ポイントａでは約１℃の低下
が見られ、また恒温状態に復帰するポイントｂまでに約
２０秒を要した。したがって、本実施例の方が従来例よ
りも著しく温度低下が少なくなってエネルギーロスを減
少させることができ、かつ恒温復帰を短時間にできるの
で、炉内を恒温に保時間を長くでき、炉内の加熱温度を
均一化できることは明らかである。On the other hand, in the present embodiment shown in the lower part B, when the same operation is performed, a decrease of about 1 ° C. is observed at the point a, and about 20 seconds are required until the point b returns to the constant temperature state. Cost me. Therefore, in the present embodiment, the temperature drop is remarkably reduced and the energy loss can be reduced as compared with the conventional example, and the constant temperature return can be shortened. It is clear that the heating temperature in the inside can be made uniform.
【００３８】なお、Ａ、Ｂはキャリヤ及びその出入部構
造を除き、ワークを用いない無負荷状態等同一条件でお
こなった結果である。従来例の場合は炉室の前側開口部
全体が一つの扉（本実施例の前面壁４ａに相当する部
分）で開閉されるようになっている。A and B are the results obtained under the same conditions, such as a no-load condition without using a work, except for the carrier and the structure of the access portion. In the case of the conventional example, the entire front opening of the furnace chamber is opened and closed by one door (a portion corresponding to the front wall 4a of the present embodiment).
【００３９】図６は、キャスターが炉室外に取り付けら
れた第２実施例の縦断面図であり、キャスターを炉室内
に配置するばかりでなく、炉室外に配置させるようにも
できることを示す。すなわち、本体部１１の下方に平行
して加熱炉１の底部下方空間内へ出入可能なキャリヤ底
部２０が開閉用扉１２から後方へ延出し、このキャリヤ
底部２０の底面に適宜数のキャスター２１が回動自在に
取り付けられ、加熱炉１の置かれれている接地面２２上
を移動可能になっている。FIG. 6 is a longitudinal sectional view of the second embodiment in which the casters are mounted outside the furnace chamber, and shows that the casters can be arranged not only inside the furnace chamber but also outside the furnace chamber. That is, a carrier bottom 20 that can enter and exit the space below the bottom of the heating furnace 1 extends rearward from the opening / closing door 12 in parallel with the lower part of the main body 11, and an appropriate number of casters 21 are provided on the bottom of the carrier bottom 20. It is rotatably mounted and is movable on a ground plane 22 on which the heating furnace 1 is placed.
【００４０】このようにすれば、キャスター２１を炉室
２の内部へ配置しなくてもよくなるので、炉室内の底壁
４ｃに付着したゴミや樹脂があってもこれらに関係なく
キャスター２１はスムーズに移動でき、その結果、キャ
リヤ１０も底壁４ｃの汚れに影響されずに移動して、シ
ール壁１６や後側シール壁１７が曲面６や段差８に当接
して気密を保つことができる。また、炉室２の内部がキ
ャスター２１を劣化させるような酸化雰囲気等の場合で
も、キャスター２１の劣化を防止してメンテナンス回数
を削減できる。In this manner, the casters 21 do not have to be disposed inside the furnace chamber 2, so that even if there is dust or resin adhering to the bottom wall 4c in the furnace chamber, the casters 21 can be smooth regardless of these. As a result, the carrier 10 also moves without being affected by dirt on the bottom wall 4c, and the seal wall 16 and the rear seal wall 17 abut on the curved surface 6 and the step 8 to maintain airtightness. Further, even in the case where the inside of the furnace chamber 2 is in an oxidizing atmosphere or the like that deteriorates the casters 21, the deterioration of the casters 21 can be prevented and the number of maintenance operations can be reduced.
【００４１】図７は、第３実施例に係る図５と同様の断
面図であり、この例では図６におけるキャリヤ１０の本
体部１１に代えて、略水平に前後方向へ延出する棚状部
材２３を上下方向へ複数段に設けてある。また、後側シ
ール壁２４は各棚状部材２３毎に設けられ、図５の上下
方向に長い後側シール壁１７を各棚状部材２３毎に分割
したものに相当する。FIG. 7 is a sectional view similar to FIG. 5 according to the third embodiment. In this example, instead of the main body 11 of the carrier 10 in FIG. 6, a shelf extending substantially horizontally in the front-rear direction is used. The members 23 are provided in a plurality of stages in the vertical direction. Further, the rear seal wall 24 is provided for each of the shelf members 23, and corresponds to the rear seal wall 17 which is long in the vertical direction in FIG.
【００４２】さらに、前側シール壁１６で覆われる小窓
部５の内側に内壁２５を設け、この内壁に各棚状部材２
３を出入可能にするとともに各後側シール壁２４で閉じ
られる大きさの微小窓部２６を設けてある。このように
するとワーク支持部を多段にして一度により多くのワー
クを加熱処理できるとともに、微小窓部２６によりキャ
リヤ出入時の開口面積をさらに小さくできる。Further, an inner wall 25 is provided inside the small window portion 5 covered with the front seal wall 16, and each of the shelf-like members 2 is provided on the inner wall.
3 is provided, and a small window 26 is provided which is sized to be closed by each rear seal wall 24. In this way, the work supporting portion can be multi-tiered to heat-treat more work at once, and the small window 26 can further reduce the opening area when the carrier enters and exits.
【００４３】図８は、第４実施例に係る加熱炉の正面図
であり、この例では上下方向に長い縦長の引き出し状を
なすキャリヤ１０を複数横へ並べてある。この場合、小
窓部５も相似形状の縦長開口部をなして複数横並びに形
成され、各開閉用扉１２が前側シール壁を兼ねて小窓部
５を覆うようになっている。このようにすると、キャリ
ヤ１０の数を多くできるので、一度に多数のワークを加
熱処理ででき、しかもワーク毎に加熱時間等を異にした
処理が可能になる。そのうえ引き出し状にすることでワ
ークの配置が正確かつ迅速になり、特に深底形状のため
背の高いワークの処理に適している。FIG. 8 is a front view of a heating furnace according to the fourth embodiment. In this example, a plurality of vertically elongated carriers 10 which are long in the vertical direction are arranged side by side. In this case, a plurality of small windows 5 are also formed side by side so as to form a vertically long opening having a similar shape, and each opening / closing door 12 covers the small window 5 as a front sealing wall. By doing so, the number of carriers 10 can be increased, so that a large number of workpieces can be subjected to heat treatment at one time, and furthermore, treatments with different heating times for each work can be performed. In addition, the drawer-like configuration enables the work to be arranged accurately and quickly, and is particularly suitable for processing tall works due to its deep bottom shape.
【００４４】図９は、第５実施例に係る前実施例同様の
正面図であり、この例では左右方向に長い横長の引き出
し状をなすキャリヤ１０を複数上下へ並べてある。この
ようにすると、キャリヤ１０が浅深底形状のため背の低
いワークや小物ワークの処理に適している。FIG. 9 is a front view similar to the previous embodiment according to the fifth embodiment. In this embodiment, a plurality of vertically long, horizontally extending drawer-shaped carriers 10 are arranged vertically. In this case, the carrier 10 is suitable for processing short works and small works because the carrier 10 has a shallow and deep bottom shape.
【００４５】図１０は第６実施例に係る図７同様の断面
図であり、この例では図７と同様の棚状部材２３を有す
るキャリヤ１０を設けてあるが、各棚状部材２３毎に設
けられる後側シール壁２４は設けられず、その代わり各
微少窓部２６に小窓用扉３０を開閉自在に設けてある。
またキャリヤ１０の引き出し時には各棚状部材２３は完
全に炉外へ出るようになっている。FIG. 10 is a sectional view similar to FIG. 7 according to the sixth embodiment. In this example, a carrier 10 having a shelf 23 similar to that of FIG. 7 is provided. The rear seal wall 24 provided is not provided, and instead, a small window door 30 is provided on each minute window portion 26 so as to be freely opened and closed.
When the carrier 10 is pulled out, each shelf 23 is completely out of the furnace.
【００４６】小窓用扉３０は、前面壁４ａの下方に設け
た接近センサー３１，３２により、キャリヤ底部２０の
後端である後方突出部３３の接近又は離反を検知して自
動的に開閉するようになっている。後方突出部３３は各
棚状部材２３の後端部よりも長く後方へ延出している。The small window door 30 is automatically opened and closed by detecting approach or separation of a rear protruding portion 33 which is a rear end of the carrier bottom portion 20 by proximity sensors 31 and 32 provided below the front wall 4a. It has become. The rear protruding portion 33 extends rearward longer than the rear end of each shelf 23.
【００４７】このキャリヤ１０を炉内へ送り込むと、後
方突出部３３が接近センサー３１を通って同３２に近接
すると、小窓用扉３０を開き、各棚状部材２３の後端部
をそれぞれの対応する微少窓部２６へ差し込み可能にな
る。なお、キャリヤ１０の送り込み時には前側シール壁
２６が小窓部５を覆う。逆にキャリヤ１０を引き出すと
きは、後方突出部３３が接近センサー３２を通って同３
１に近接すると小窓用扉３０を閉じる。When the carrier 10 is fed into the furnace, when the rear protruding portion 33 approaches the same through the proximity sensor 31, the small window door 30 is opened, and the rear end of each shelf 23 is moved to the respective end. It can be inserted into the corresponding minute window 26. The front seal wall 26 covers the small window 5 when the carrier 10 is fed. Conversely, when pulling out the carrier 10, the rear projecting portion 33 passes through the proximity sensor 32 and
When it approaches 1, the small window door 30 is closed.
【００４８】このようにすると、後側シール壁２４（図
６）を設けないことにより、キャリヤ１０の引き出し時
に各棚状部材２３は完全に炉外へ出してワークのセット
や取り出しをおこなうことができるのでワークを扱う作
業が正確かつ容易になる。そのうえキャリヤ１０を完全
に炉外へ出しても微少窓部２６を小窓用扉３０で覆うこ
とができる。小窓用扉３０の自動開閉機構はエアー式、
機械式、あるいは電動式等種々可能である。In this way, since the rear seal wall 24 (FIG. 6) is not provided, each shelf 23 can be completely taken out of the furnace when the carrier 10 is pulled out to set or take out the work. Work can be done accurately and easily. In addition, even if the carrier 10 is completely taken out of the furnace, the small window 26 can be covered with the small window door 30. The automatic opening and closing mechanism of the small window door 30 is air-operated,
Various types such as a mechanical type or an electric type are possible.
【００４９】なお、小窓用扉３０の開閉は手動式であっ
てもよいい。さらに小窓用扉３０はこのように各微小窓
部２６毎に独立したものではなく、図中に仮想線で示す
ような連続する一枚物のシャッター３４であってもよい
い。この場合シャッター３４には各微小窓部２６に対応
した窓穴が設けられており、このシャッター３４を加熱
炉の上方に設けたスプロケット３５で巻き上げ又は下げ
ることにより各微小窓部２６を開閉する。この場合にも
手動による巻き上げ等の手動操作がにしてもよいい。
図１１は第７実施例に係る図１と同様の断面図であり、
この例では図１の加熱炉１に対して後部璧相当部を後部
開閉扉３６として、炉室２における後方開口部全体を開
閉可能にしてある。符号３７は扉のハンドルである。こ
のようにすると、炉室２ないの清掃等が必要なとき、後
部開閉扉３６を開いて炉室２の後部全体を開放できるた
め、メンテナンス性が向上する。The opening and closing of the small window door 30 may be manual. Furthermore, the small window door 30 is not independent for each small window portion 26 as described above, but may be a single continuous shutter 34 as shown by a virtual line in the figure. In this case, the shutter 34 is provided with a window hole corresponding to each of the minute windows 26, and the minute windows 26 are opened and closed by winding up or lowering the shutter 34 with a sprocket 35 provided above the heating furnace. In this case, manual operation such as manual winding may be performed.
FIG. 11 is a sectional view similar to FIG. 1 according to the seventh embodiment,
In this example, a portion corresponding to a rear wall of the heating furnace 1 shown in FIG. 1 is used as a rear opening / closing door 36 so that the entire rear opening of the furnace chamber 2 can be opened and closed. Reference numeral 37 denotes a door handle. In this way, when cleaning or the like of the furnace chamber 2 is required, the rear opening / closing door 36 can be opened to open the entire rear part of the furnace chamber 2, thereby improving the maintainability.
【００５０】なお、本願発明は上記実施例に限定され
ず、同一の発明原理内において種々に変形や応用が可能
である。例えば、加熱炉１は上記のようなテストばかり
でなく、乾燥や熱硬化性樹脂の熱硬化等の種々な加熱処
理に使用でき、このような加熱処理された製品の品質を
高めることができる。It should be noted that the present invention is not limited to the above embodiment, and various modifications and applications are possible within the same principle of the invention. For example, the heating furnace 1 can be used not only for the above test but also for various heating treatments such as drying and thermosetting of a thermosetting resin, and can improve the quality of such heat-treated products.
【００５１】さらに、前側シール壁１６と後側シール壁
１７及びこれらが接触する相手側に弾性部材からなる公
知のシール部材を介在させてもよいい。また、後側シー
ル壁１７もテーパー合わせに接合させることもできる。
そのうえ、小窓部５の開閉時間を安定させるため、キャ
リヤ１０の移動をエアーシリンダ等の機械的手段でおこ
なうことにより自動化させてもよいい。この場合の駆動
形式はエアー式、機械式、あるいは電動式等種々可能で
ある。Further, a known seal member made of an elastic member may be interposed between the front seal wall 16 and the rear seal wall 17 and the mating side where they come into contact with each other. Further, the rear seal wall 17 can also be joined by taper alignment.
In addition, in order to stabilize the opening and closing time of the small window portion 5, the movement of the carrier 10 may be automated by performing mechanical movement such as an air cylinder. In this case, various types of drive such as a pneumatic type, a mechanical type, and an electric type are possible.
【図１】第１実施例に係る加熱炉の縦断面図FIG. 1 is a longitudinal sectional view of a heating furnace according to a first embodiment.
【図２】この加熱炉の横断面図（図１の２−２線断面）FIG. 2 is a cross sectional view of the heating furnace (cross section taken along line 2-2 in FIG. 1).
【図３】使用状態を説明する図１に対応する図FIG. 3 is a diagram corresponding to FIG. 1 for explaining a use state;
【図４】第１実施例に係る加熱炉の正面図FIG. 4 is a front view of the heating furnace according to the first embodiment.
【図５】キャスターを出入したときの炉内温度変化を示
すグラフFIG. 5 is a graph showing a temperature change in a furnace when a caster is moved in and out.
【図６】第２実施例の縦断面図FIG. 6 is a longitudinal sectional view of a second embodiment.
【図７】第３実施例の縦断面図FIG. 7 is a longitudinal sectional view of a third embodiment.
【図８】第４実施例に係る加熱炉の正面図FIG. 8 is a front view of a heating furnace according to a fourth embodiment.
【図９】第５実施例に係る加熱炉の正面図FIG. 9 is a front view of a heating furnace according to a fifth embodiment.
【図１０】第６実施例の使用状態縦断面図FIG. 10 is a longitudinal sectional view of a use state of a sixth embodiment.
【図１１】第７実施例の縦断面FIG. 11 is a longitudinal section of a seventh embodiment.
１：加熱炉、２：炉室、３：ファン、５：小窓部、６：
曲面、１０：キャリヤ、１１：本体部、１２：開閉用
扉、１６：前側シール壁、１７：後側シール壁、２３：
棚状部、２６：微小窓部、３０：小窓用扉1: heating furnace, 2: furnace room, 3: fan, 5: small window, 6:
Curved surface, 10: carrier, 11: main body, 12: door for opening and closing, 16: front sealing wall, 17: rear sealing wall, 23:
Shelf, 26: micro window, 30: door for small window
Claims (5)
へキャリヤを出入自在にした加熱炉において、前記キャ
リヤ出入口は、炉室全体の前側開口部を覆う前面壁の一
部に設けられた前記前側開口部よりも小さな開口面積を
有する小窓部であり、前記キャリヤを炉内へ送り込んだ
とき前記キャリヤの一部で前記小窓部を覆うとともに、
前記キャリヤを引き出したときは前記キャリヤの一部又
はキャリヤと別に設けた開閉部材で前記小窓部を覆うこ
とを特徴とする加熱炉。1. A heating furnace in which a carrier can freely enter and exit a furnace chamber from a carrier entrance provided in a furnace wall, wherein the carrier entrance is provided on a part of a front wall that covers a front opening of the entire furnace chamber. A small window having an opening area smaller than the front opening, and covering the small window with a part of the carrier when the carrier is fed into the furnace.
A heating furnace, wherein when the carrier is drawn out, the small window is covered with a part of the carrier or an opening / closing member provided separately from the carrier.
前側シール壁を設け、かつ前記キャリヤの出入時手奥側
となる部分に後側シール壁を設け、これら前側シール壁
又は後側シール壁により前記キャリヤの出入時に前記小
窓部を覆うことを特徴とする請求項１に記載した加熱
炉。2. A front seal wall is provided in a portion which is on the near side when the carrier enters and exits, and a rear seal wall is provided in a portion which is on the back side when the carrier enters and exits, the front seal wall or the rear seal wall being provided. The heating furnace according to claim 1, wherein the small window portion is covered by a wall when the carrier enters and exits.
閉部材が、前記小窓部へ設けられかつ前記キャリヤの出
入に応じて自動又は手動で開閉する小窓扉であることを
特徴とする請求項１に記載した加熱炉。3. The small window unit according to claim 1, wherein the opening / closing member for covering the small window when the carrier is pulled out is a small window door provided on the small window and automatically or manually opened and closed according to the entry and exit of the carrier. Item 2. The heating furnace according to Item 1.
とを特徴とする請求項１乃至は３のいずれかに記載した
加熱炉。4. The heating furnace according to claim 1, wherein said carrier is in a shape of a shelf or a drawer.
のキャリヤの数に応じて前記小窓部を複数設けたことを
特徴とする請求項４に記載した加熱炉。5. The heating furnace according to claim 4, wherein a plurality of said carriers are provided and a plurality of said small windows are provided in accordance with the number of said carriers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001220680A JP4608142B2 (en) | 2001-06-15 | 2001-06-15 | heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001220680A JP4608142B2 (en) | 2001-06-15 | 2001-06-15 | heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002370233A true JP2002370233A (en) | 2002-12-24 |
| JP4608142B2 JP4608142B2 (en) | 2011-01-05 |
Family
ID=19054467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001220680A Expired - Fee Related JP4608142B2 (en) | 2001-06-15 | 2001-06-15 | heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4608142B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984320A (en) * | 2010-11-17 | 2011-03-09 | 湖州航达工业炉制造有限公司 | Variable-capacity car bottom furnace |
| JP4996760B1 (en) * | 2011-07-04 | 2012-08-08 | アルカエンジニアリング株式会社 | Batch type heat treatment furnace |
| KR102287334B1 (en) * | 2021-04-30 | 2021-08-06 | 주식회사 신도 | Cassette type heating furnace with structure to prevent heat loss |
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| JPH0590294U (en) * | 1992-05-11 | 1993-12-10 | 鐘紡株式会社 | heating furnace |
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2001
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| JPS58151657U (en) * | 1982-04-02 | 1983-10-11 | 住友金属工業株式会社 | Heat treatment furnace insulation device |
| JPS60152887A (en) * | 1984-01-20 | 1985-08-12 | 株式会社日立製作所 | Heater |
| JPH0318499U (en) * | 1989-06-29 | 1991-02-22 | ||
| JPH0336492A (en) * | 1989-06-30 | 1991-02-18 | Fuaanesu Juko Kk | Door device of heating furnace |
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| JPH04265837A (en) * | 1991-02-20 | 1992-09-22 | Sekisui House Ltd | Fire resistance testing apparatus for construction structural member |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984320A (en) * | 2010-11-17 | 2011-03-09 | 湖州航达工业炉制造有限公司 | Variable-capacity car bottom furnace |
| JP4996760B1 (en) * | 2011-07-04 | 2012-08-08 | アルカエンジニアリング株式会社 | Batch type heat treatment furnace |
| KR102287334B1 (en) * | 2021-04-30 | 2021-08-06 | 주식회사 신도 | Cassette type heating furnace with structure to prevent heat loss |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4608142B2 (en) | 2011-01-05 |
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