JP2895042B1 - Atmosphere circulation type heat treatment furnace - Google Patents
Atmosphere circulation type heat treatment furnaceInfo
- Publication number
- JP2895042B1 JP2895042B1 JP5489898A JP5489898A JP2895042B1 JP 2895042 B1 JP2895042 B1 JP 2895042B1 JP 5489898 A JP5489898 A JP 5489898A JP 5489898 A JP5489898 A JP 5489898A JP 2895042 B1 JP2895042 B1 JP 2895042B1
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- atmosphere
- baffle
- perforated plate
- plate
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/02—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a discontinuous way
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
【要約】
【課題】 循環雰囲気をバッフルから炉幅方向に所定の
流量として吹き出すようにした炉内雰囲気循環式熱処理
炉を提供する。
【解決手段】 炉内天井部１５に設けた循環ファン１７
と炉内に設けたバッフル１３により雰囲気循環路１６を
形成し、前記循環ファンの下方にドーナツ状の邪魔板２
０を配設するとともに、この邪魔板の下方に前記バッフ
ル内を上下に区画する多孔板２４を設け、炉内雰囲気を
前記多孔板を介して下方に噴出させて処理材を熱処理し
たのちバッフル側板１３ａ下方から前記雰囲気循環路に
循環させる炉内雰囲気循環式熱処理炉において、前記多
孔板を上下二層２４Ａ，２４Ｂ構成とするとともに、こ
の多孔板のいずれか一方の層を炉幅方向に複数枚に分割
し、該分割した多孔板を各々単独に移動可能に配設した
ことを特徴とする炉内雰囲気循環式熱処理炉。To provide a furnace atmosphere circulation type heat treatment furnace which blows out a circulation atmosphere from a baffle at a predetermined flow rate in a furnace width direction. SOLUTION: A circulation fan 17 provided in a furnace ceiling 15 is provided.
And an atmosphere circulation path 16 formed by a baffle 13 provided in the furnace, and a donut-shaped baffle plate 2 is provided below the circulation fan.
0, and a perforated plate 24 for vertically partitioning the inside of the baffle is provided below the baffle plate, and the atmosphere in the furnace is blown downward through the perforated plate to heat-treat the processing material. 13a In an in-furnace atmosphere circulation type heat treatment furnace that circulates from the lower side to the atmosphere circulation path, the perforated plate is constituted by upper and lower two layers 24A and 24B, and one of the perforated plates is provided in plural in the furnace width direction. Characterized in that the perforated plate is divided so as to be movable independently of each other.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ブラウン管のパネ
ル等ガラス製品の熱処理に適した炉内雰囲気循環式熱処
理炉に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-furnace atmosphere circulation type heat treatment furnace suitable for heat treatment of glass products such as CRT panels.
【０００２】[0002]
【従来の技術】炉内雰囲気循環式熱処理炉において、特
に、ブラウン管のパネル等のガラス製品（処理材）を均
一に熱処理するためには、循環雰囲気が十分に混合され
て均一温度となっていることと循環雰囲気が均一に処理
材に接触すること（偏流を生じないこと）が必要であ
る。そのため、本出願人は、特開平９−１１８５３３号
公報にて、図９に示す炉内雰囲気循環式熱処理炉を提案
した。すなわち、炉内天井部に循環ファン１を設けると
ともに、炉Ｔ′内にバッフル２を設けて該バッフル２と
炉内壁との間で炉内雰囲気循環路３を形成する一方、前
記循環ファン１の下方にドーナツ状の邪魔板４を配設
し、かつ、該邪魔板４の下方に前記バッフル２内を上下
に区画する多孔板５を設けて、炉内雰囲気を前記多孔板
５を介して下方に噴出させて前記バッフル２の側板２ａ
下方の開口ａから前記炉内雰囲気循環路３に循環させる
ことでベルトコンベアＶ上の処理材Ｗを熱処理するもの
である。なお、６は直火式バーナである。前記構成とし
た理由は、前記循環ファン１は羽根１ａの中心部（ボス
部）を除く内端部側の風量（風速）が一番強いため、こ
の部分の下方にドーナツ状の邪魔板４を設けて風量の均
一化を図り、さらに、多孔板５を介在させることにより
整流して炉幅方向および炉長方向での風量分布をより均
一にしようとするものである。2. Description of the Related Art In a furnace atmosphere circulation type heat treatment furnace, particularly, in order to uniformly heat-treat glass products (treatment materials) such as cathode ray tube panels, the circulation atmosphere is sufficiently mixed to have a uniform temperature. In addition, it is necessary that the circulating atmosphere uniformly contact the processing material (do not generate a drift). For this reason, the present applicant has proposed an in-furnace atmosphere circulation type heat treatment furnace shown in FIG. 9 in Japanese Patent Application Laid-Open No. Hei 9-118533. That is, the circulation fan 1 is provided on the ceiling of the furnace, and the baffle 2 is provided in the furnace T ′ to form the furnace atmosphere circulation path 3 between the baffle 2 and the furnace inner wall. A donut-shaped baffle plate 4 is provided below, and a perforated plate 5 is provided below the baffle plate 4 to partition the inside of the baffle 2 up and down. To the side plate 2a of the baffle 2.
The processing material W on the belt conveyor V is heat-treated by circulating from the lower opening a to the furnace atmosphere circulation path 3. Reference numeral 6 denotes a direct fire type burner. The reason for the above configuration is that the circulation fan 1 has the strongest air volume (wind speed) on the inner end side except for the central portion (boss portion) of the blade 1a. In this case, the air volume is made uniform by the provision of the air holes, and the flow is rectified by interposing the perforated plate 5 to make the air volume distribution uniform in the furnace width direction and the furnace length direction.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記構
成の炉内雰囲気循環式熱処理炉においても、循環ファン
１やバッフル２の特性、あるいは邪魔板４の大きさや多
孔板５の孔の大きさ、配列等に基づき、多孔板５の上部
空間における風圧の不均一化等に起因して、炉幅方向で
の偏流が生じることがあり、また、処理材Ｗによって
は、各ロットにより他部よりある特定側部を余分に加熱
あるいは冷却する必要が生じることがあるが、このよう
な場合、前記従来のものでは対処することができないと
いう課題を有する。したがって、本発明は炉幅方向にお
いて前記多孔板からの噴出量を可変とすることにより前
記課題を解決することのできる炉内雰囲気循環式熱処理
炉を提供することを目的とする。However, in the in-furnace atmosphere circulation type heat treatment furnace having the above-mentioned structure, the characteristics of the circulation fan 1 and the baffle 2 or the size of the baffle plate 4 and the size and arrangement of the holes of the perforated plate 5 are also considered. Due to the unevenness of the wind pressure in the upper space of the perforated plate 5, a drift may occur in the furnace width direction, and depending on the processing material W, a certain amount may be specified in each lot from other parts. In some cases, it is necessary to heat or cool the side part extra, but in such a case, there is a problem that the conventional one cannot cope with the problem. Therefore, an object of the present invention is to provide an in-furnace atmosphere circulation type heat treatment furnace that can solve the above-mentioned problem by making the amount of jet from the perforated plate variable in the furnace width direction.
【０００４】[0004]
【課題を解決するための手段】本発明は、前記目的を達
成するために、炉内天井部に設けた循環ファンと炉内に
設けたバッフルにより雰囲気循環路を形成し、前記循環
ファンの下方にドーナツ状の邪魔板を配設するととも
に、この邪魔板の下方に前記バッフル内を上下に区画す
る多孔板を設け、炉内雰囲気を前記多孔板を介して下方
に噴出させてバッフル側板下方から前記雰囲気循環路に
循環させる炉内雰囲気循環式熱処理炉において、前記多
孔板を上部多孔板と下部多孔板とからなる二層構成とす
るとともに、いずれか一方の層の多孔板を炉幅方向で複
数枚に分割し、該分割した多孔板を各々単独に移動可能
に配設したものである。According to the present invention, in order to achieve the above object, an atmosphere circulation path is formed by a circulation fan provided in a furnace ceiling and a baffle provided in a furnace, and an atmosphere circulation path is provided below the circulation fan. In addition to disposing a donut-shaped baffle plate, a perforated plate that partitions the inside of the baffle up and down is provided below the baffle plate, and the atmosphere in the furnace is ejected downward through the perforated plate, and from below the baffle side plate. In the furnace atmosphere circulation type heat treatment furnace circulating in the atmosphere circulation path, the perforated plate has a two-layer structure consisting of an upper perforated plate and a lower perforated plate, and any one of the perforated plates in the furnace width direction. It is divided into a plurality of sheets, and the divided perforated plates are individually movably arranged.
【０００５】[0005]
【発明の実施の形態】つぎに、本発明の実施の形態を図
１〜図８にしたがって説明する。本発明が適用される炉
内雰囲気循環式熱処理炉Ｔは、図１に示すように、加熱
・均熱帯１０、徐冷帯３５および冷却帯４０とからな
り、処理材ＷはベルトコンベアＶによって前記各帯域を
搬送され、その間に熱処理されるものである。なお、前
記各帯域は、複数の単位帯域１０Ａ，３５Ａ，４０Ａか
らなっている。Next, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the in-furnace atmosphere circulation type heat treatment furnace T to which the present invention is applied includes a heating / soaking zone 10, a slow cooling zone 35, and a cooling zone 40, and a processing material W is formed by a belt conveyor V. Each zone is conveyed and heat-treated during that time. Each of the bands includes a plurality of unit bands 10A, 35A, and 40A.
【０００６】前記加熱・均熱帯１０の単位帯域１０Ａ
は、大略、図２に示すように、耐火断熱材１２を内張り
した炉本体１１内に設けたバッフル１３と循環ファン１
７と加熱手段である直火式バーナ１９とからなる。この
直火式バーナ１９はラジアントチューブ式バーナあるい
は電熱ヒータであってもよい。[0006] The unit band 10A of the heating and leveling 10
The baffle 13 and the circulation fan 1 provided in a furnace body 11 lined with a refractory heat insulating material 12 as shown in FIG.
7 and a direct-fired burner 19 as a heating means. The direct fire type burner 19 may be a radiant tube type burner or an electric heater.
【０００７】そして、前記バッフル１３は、上面が舟底
形の天井１５と該天井１５の炉幅方向両端部に取り付け
た側板１４とからなり、ロッド２３ａにより炉天井から
吊持固定されている。また、側板１４の下端と炉底部と
の間および側板１４と炉側壁との間には、それぞれ空間
が設けられる一方、炉天井に取り付けられた循環ファン
１７の羽根１８が前記天井１５の開口部に位置して、前
記空間と循環ファン１７とで炉内雰囲気循環路（以下、
循環路という）１６を形成している。The baffle 13 is composed of a ceiling 15 having a boat-bottomed upper surface and side plates 14 attached to both ends of the ceiling 15 in the furnace width direction, and is suspended and fixed from the furnace ceiling by rods 23a. Spaces are respectively provided between the lower end of the side plate 14 and the furnace bottom and between the side plate 14 and the furnace side wall, while the blades 18 of the circulation fan 17 attached to the furnace ceiling are connected to the opening of the ceiling 15. Is located between the space and the circulation fan 17 in a furnace atmosphere circulation path (hereinafter, referred to as a circulation path).
A circulation path 16 is formed.
【０００８】また、前記側板１４の循環ファン１７の真
横下部には、図５、図６に示すように、所定巾の平板状
の邪魔板１４ａを下方に突設してあり、この部分におけ
る循環路１６の入口ａを閉塞するようになっている。As shown in FIGS. 5 and 6, a plate-shaped baffle plate 14a having a predetermined width projects downward from the side plate 14 immediately below the circulating fan 17 to circulate the air. The entrance a of the road 16 is closed.
【０００９】さらに、前記循環ファン１７の下方にドー
ナツ状の邪魔板２０を配設するとともに、この邪魔板２
０の下方に前記バッフル１３内を上下に区画する多孔板
２４を設けている。Further, a donut-shaped baffle plate 20 is provided below the circulation fan 17 and the baffle plate 2
Below 0, a perforated plate 24 is provided which partitions the inside of the baffle 13 up and down.
【００１０】ところで、前記邪魔板２０は開孔率３８．
２％の多数の孔Ｈ1を有する多孔板（パンチングメタ
ル）からなり、図３，４に示すように中心に開口２１を
有するドーナツ状のもので、円周を８等分するように８
枚のＬ字状のリブ２２が取り付けられている。なお、図
においては、この邪魔板２０は２分割構造となってお
り、一片２０ａをロッド２３ｂにより吊り下げたのち、
他片２０ｂを同様に吊り下げ、その後、リブ２２，２２
をリベット等により一体化したものである。また、前記
邪魔板２０の直径は、前記循環ファン１７の羽根径を１
とすると、１．５であり、かつ、開口２１の直径は前記
羽根胴部径（中心部径）の０．７〜０．８としてある。The baffle plate 20 has an aperture ratio of 38.
Porous plate having a number of holes H 1 2% consists (punching metal), those donut-shaped having an opening 21 at the center as shown in FIGS. 3 and 4, as the circumference 8 equal parts 8
A plurality of L-shaped ribs 22 are attached. In the figure, this baffle plate 20 has a two-part structure, and after a piece 20a is suspended by a rod 23b,
The other piece 20b is similarly suspended, and then the ribs 22,
Are integrated by rivets or the like. Further, the diameter of the baffle plate 20 is set so that the blade diameter of the circulation fan 17 is 1
Then, the diameter is 1.5, and the diameter of the opening 21 is set to 0.7 to 0.8 of the blade body diameter (center diameter).
【００１１】一方、前記多孔板２４は、図２、図７に示
すように、貫通孔Ｈ2を同一パターンとした上部多孔板
２４Ａと下部多孔板２４Ｂからなる二層で構成されると
ともに、いずれか一方、実施形態においては上部多孔板
２４Ａを炉幅方向で複数枚に分割し、各分割上部多孔板
２４Ａ1，２４Ａ2…を、前記バッフル１３の側板１４に
取り付けられた下部多孔板２４Ｂ上に操作手段により単
独で炉長方向に移動可能に載置したものである。すなわ
ち、下部多孔板２４Ｂは上面に炉幅方向と炉長方向とに
所定間隔で設けた隔壁２５により複数の区画２６ａ，２
６ｂ…に区分される一方、前記各分割上部多孔板２４Ａ
1，２４Ａ2…は前記隔壁２５より低い側壁２７を有し、
前記各区画２６ａ，２６ｂ…にそれぞれ１枚の分割上部
多孔板２４Ａを炉長方向に移動可能に載置したものであ
る。Meanwhile, the porous plate 24, FIG. 2, as shown in FIG. 7, while being composed of two layers consisting of a through-hole H 2 and the same pattern upper porous plate 24A and the lower perforated plate 24B, both or the other, to divide the upper perforated plate 24A on a plurality in Rohaba direction in the embodiment, the divided upper perforated plate 24A 1, 24A 2 ... and the lower perforated plate 24B mounted to the side plate 14 of the baffle 13 Are mounted so as to be independently movable in the furnace length direction by operating means. That is, the lower porous plate 24B is divided into a plurality of partitions 26a, 2a by partition walls 25 provided on the upper surface at predetermined intervals in the furnace width direction and the furnace length direction.
6b, while each of the divided upper perforated plates 24A
1, 24A 2 ... has a lower than the partition wall 25 side wall 27,
One divided upper perforated plate 24A is placed on each of the sections 26a, 26b,... So as to be movable in the furnace length direction.
【００１２】また、前記各分割上部多孔板２４Ａ1，２
４Ａ2…の側壁２７間にロッド２８が取り付けられてい
る。一方、前記各ロッド２８の上方には一端が炉本体１
１の炉側壁を貫通し、他端側がバッフル１３の側板１４
および下部多孔板２４Ｂの炉長方向の隔壁２５を貫通
し、当該分割上部多孔板２４Ａの外側に位置する隔壁２
５に至る操作ロッド２９が設けられている。そして、各
操作ロッド２９に、下方に位置するロッド２８と係合す
るフォーク部３１を備えた操作片３０が取り付けられて
おり、ハンドル２９ａ1，２９ａ2…を操作することによ
り、各分割上部多孔板２４Ａ1，２４Ａ2…を単独に炉長
方向に移動させ、図７（Ｃ）に示すように、下部多孔板
２４Ｂの開孔率を可変可能としたものである。図におい
ては、前記操作ロッド２９は炉本体１１の両側に設けら
れているが、分割上部多孔板２４Ａの枚数が少なければ
一方側にのみ設けてもよく、また、分割上部多孔板２４
Ａの駆動をチェーン、ギヤ機構等で行ってもよい。Further, each of the divided upper perforated plates 24A 1 , 2A
A rod 28 is attached between side walls 27 of 4A 2 . On the other hand, one end of the furnace body 1 is located above each rod 28.
1 through the furnace side wall, and the other end side is a side plate 14 of the baffle 13.
And the partition wall 2 penetrating the partition wall 25 of the lower perforated plate 24B in the furnace length direction and located outside the divided upper perforated plate 24A.
5 is provided. Each operating rod 29 is provided with an operating piece 30 provided with a fork portion 31 which engages with the rod 28 located below. By operating the handles 29a 1 , 29a 2 . The plates 24A 1 , 24A 2 ... Are independently moved in the furnace length direction, and as shown in FIG. 7C, the opening ratio of the lower perforated plate 24B is made variable. In the figure, the operation rods 29 are provided on both sides of the furnace body 11, but may be provided only on one side if the number of divided upper perforated plates 24A is small,
A may be driven by a chain, a gear mechanism, or the like.
【００１３】つぎに、前記構成からなる炉内雰囲気循環
式熱処理炉Ｔの操業について述べる。まず、加熱・均熱
帯１０においては、直火式バーナ１９を燃焼させて循環
ファン１７を回転すると、炉内雰囲気は循環路１６を矢
印で示すように循環し、所定温度に加熱され、循環ファ
ン１７により吸引撹拌されてバッフル１３内で前記邪魔
板２０に向けて吹き出すことになる。Next, the operation of the in-furnace atmosphere circulation type heat treatment furnace T having the above configuration will be described. First, in the heating and soaking zone 10, when the direct-fire type burner 19 is burned and the circulation fan 17 is rotated, the atmosphere in the furnace circulates through the circulation path 16 as shown by an arrow, and is heated to a predetermined temperature, and the circulation fan is heated. The mixture is sucked and agitated by 17 and blows out toward the baffle plate 20 in the baffle 13.
【００１４】この場合において、前記循環ファン１７か
ら吹き出す風量は前述の通り、羽根１８の中心部を除く
内端部において多いが、前記邪魔板２０により遮られ、
該邪魔板２０に設けた前記リブ２２に沿って放射状に均
一に外方に流れるとともに、中央部では、その一部が邪
魔板２０の孔Ｈ1から下方に吹き出し、その後、多孔板
２４Ａ，２４Ｂの貫通孔Ｈ2によって整流されて多孔板
２４Ａ，２４Ｂからほぼ均一流量（風量）で下方へ真直
に吹き出すことになる。In this case, the amount of air blown from the circulation fan 17 is large at the inner end except for the center of the blade 18 as described above, but is blocked by the baffle plate 20.
With flows uniformly radially outwardly along the rib 22 provided on the baffle plate 20, the central portion, blown out of the hole H 1 of a portion of the baffle plate 20 downwardly, then, the porous plate 24A, 24B is rectified by the through-hole H 2 and the perforated plate 24A, it will be blown straight downward with a substantially uniform flow rate (air flow) from 24B.
【００１５】しかしながら、前述のように、循環ファン
１７の特性等から必ずしも多孔板２４から熱風が均一流
量で下方に噴き出さず、炉幅方向で差が生じることがあ
る。このような場合、前記操作ロッド２９をハンドル２
９ａにより所定量回動させ、操作片３０の回動により所
定の分割上部多孔板２４Ａ1，２４Ａ2…を炉長方向に移
動させて上部多孔板２４Ａと下部多孔板２４Ｂとの貫通
孔Ｈ2の位置をずらすことにより開孔率を変えて所定風
量とする。つまり、炉内雰囲気を処理材Ｗに均一に接触
させることができる。However, as described above, due to the characteristics of the circulation fan 17 and the like, hot air does not necessarily blow down from the perforated plate 24 at a uniform flow rate, and a difference may occur in the furnace width direction. In such a case, the operation rod 29 is
By a predetermined amount of rotation by 9a, penetration of the rotation of the operation piece 30 is moved a predetermined division upper perforated plate 24A 1, 24A 2 ... to Rochow direction and upper perforated plate 24A and the lower perforated plate 24B hole H 2 Is shifted to shift the aperture ratio to a predetermined air volume. That is, the furnace atmosphere can be brought into uniform contact with the processing material W.
【００１６】なお、前記説明は、多孔板２４Ａ，２４Ｂ
からの風量に差がある場合の矯正方法であるが、処理材
Ｗによっては炉幅方向に異なる温度で加熱することが好
ましい場合があるが、このような場合においても前述の
操作によって対処することができる。The above description is based on the perforated plates 24A and 24B.
Is a correction method in the case where there is a difference in air flow from the furnace, but it may be preferable to heat at a different temperature in the furnace width direction depending on the processing material W. Can be.
【００１７】前記説明は加熱・均熱帯１０についてであ
るが、徐冷帯３５においては、バッフル１３の上方に大
気を導入する冷却ダクトを設けるとともに、多孔板上方
のバッフル空間に排気ダクトを設け、炉内循環雰囲気温
度を、直火式バーナ１９の燃焼量、冷却ダクトからの大
気等の導入量および排気ダクトからの排気量を調節して
所定温度にするようにする。The above description is about the heating / uniform tropical zone 10. In the slow cooling zone 35, a cooling duct for introducing the atmosphere is provided above the baffle 13, and an exhaust duct is provided for the baffle space above the perforated plate. The temperature of the circulating atmosphere in the furnace is adjusted to a predetermined temperature by adjusting the amount of combustion of the direct-fired burner 19, the amount of air introduced from the cooling duct, and the amount of exhaust from the exhaust duct.
【００１８】また、冷却帯４０においては、徐冷帯３５
の構造において、バーナをなくするとともに炉本体１１
を非断熱構造とすればよい。In the cooling zone 40, the slow cooling zone 35
In the above structure, the burner is eliminated and the furnace body 11
May have a non-insulated structure.
【００１９】さらに、バッフル１３の側板１４下端と炉
床との間に形成される隙間が前記循環路１６の入口ａと
なるため、多孔板２４から下方に吹き出した雰囲気は前
記循環ファン１７と最も短距離にある該循環ファン１７
の真横下部の入口部分において吸引力が一番大きくな
り、雰囲気が前記入口部分に向かって偏流する。したが
って、循環路１６の雰囲気入口ａのうちで、吸引力が一
番大きくなる部分のバッフル側板１４下部に平板状の邪
魔板１４ａを設けて、この部分からの吸引を阻止するこ
とにより炉幅方向の雰囲気風量の均一化を図るようにし
たものに本発明を適用すればより良い風量調整を行うこ
とができる。Further, since a gap formed between the lower end of the side plate 14 of the baffle 13 and the hearth serves as the inlet a of the circulation path 16, the atmosphere blown downward from the perforated plate 24 is most closely associated with the circulation fan 17. The circulation fan 17 in a short distance
The suction force becomes the largest at the inlet part just below the side of the, and the atmosphere drifts toward the inlet part. Accordingly, a flat plate-like baffle plate 14a is provided below the baffle side plate 14 in a portion where the suction force is the largest in the atmosphere inlet a of the circulation path 16 and suction from this portion is prevented, so that the furnace width direction is reduced. If the present invention is applied to a structure in which the atmospheric air volume is made uniform, better air volume adjustment can be performed.
【００２０】前記実施の形態では、上部多孔板を分割し
て、炉長方向に移動可能にしているか、下部多孔板を分
割してもよく、また移動方向を炉幅方向としてもよい。In the above embodiment, the upper perforated plate may be divided so as to be movable in the furnace length direction, or the lower perforated plate may be divided, and the moving direction may be the furnace width direction.
【００２１】[0021]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、バッフル下面に設ける多孔板を二層構造とし、
そのうちのいずれかを炉幅方向に分割し、この分割した
多孔板を各々独立的に移動可能として多孔板の貫通孔の
開孔率を可変としたため、最適な風量分布とすることが
できる。As apparent from the above description, according to the present invention, the perforated plate provided on the lower surface of the baffle has a two-layer structure,
Any one of them is divided in the furnace width direction, and the divided perforated plates can be independently moved so that the opening ratio of the through-holes of the perforated plate is variable, so that an optimum air volume distribution can be obtained.
【図１】 炉内雰囲気循環式熱処理炉の概略平面図。FIG. 1 is a schematic plan view of an atmosphere circulation type heat treatment furnace in a furnace.
【図２】 加熱・均熱帯の概略断面図。FIG. 2 is a schematic cross-sectional view of a heated / uniform tropical zone.
【図３】 図１の邪魔板の平面図。FIG. 3 is a plan view of the baffle plate of FIG. 1;
【図４】 図３のＩ−Ｉ線断面図。FIG. 4 is a sectional view taken along line II of FIG. 3;
【図５】 加熱・均熱帯における雰囲気流れを示す説明
図。FIG. 5 is an explanatory diagram showing an atmosphere flow in heating and solitary tropics.
【図６】 図５のII−II線断面図。FIG. 6 is a sectional view taken along line II-II of FIG.
【図７】 Ａは図２のバッフルに設けた多孔板部分の詳
細断面図。ＢはＡの平面図で、Ｃは区画室２６ｂにおけ
る多孔板の状態を示す図。FIG. 7A is a detailed sectional view of a perforated plate portion provided on the baffle of FIG. 2; B is a plan view of A, and C shows the state of the perforated plate in the compartment 26b.
【図８】 Ａは操作ロッドの操作状態を示す図で、Ｂは
ＡのIII−III線断面図。8A is a diagram showing an operation state of the operation rod, and FIG. 8B is a cross-sectional view of A taken along the line III-III.
【図９】 従来の炉内雰囲気循環式熱処理炉の断面図。FIG. 9 is a cross-sectional view of a conventional in-furnace atmosphere circulation type heat treatment furnace.
１１…炉本体、１３…バッフル、１５…炉天井、１６…
雰囲気循環路、１７…循環ファン、１８…羽根、１９…
バーナ、２０…邪魔板、２１…開口、２４…多孔板、２
４Ａ…上層多孔板、２４Ｂ…下層多孔板、２９…操作ロ
ッド、３０…操作片、Ｈ1，Ｈ2…孔。11 ... furnace body, 13 ... baffle, 15 ... furnace ceiling, 16 ...
Atmospheric circulation path, 17: circulation fan, 18: blade, 19 ...
Burner, 20: baffle plate, 21: opening, 24: perforated plate, 2
4A ... upper perforated plate, 24B ... lower perforated plate 29 ... operating rod, 30 ... operation piece, H 1, H 2 ... hole.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ２７Ｄ 7/04 Ｆ２７Ｄ 7/04 (58)調査した分野(Int.Cl.6，ＤＢ名) F27B 9/00 - 9/40 F27D 7/00 - 7/06 C21D 1/767 C03B 27/012 C03B 32/00 ──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. 6 identification code FI F27D 7/04 F27D 7/04 (58) Field surveyed (Int.Cl. 6 , DB name) F27B 9/00-9/40 F27D 7/00-7/06 C21D 1/767 C03B 27/012 C03B 32/00
Claims (1)
設けたバッフルにより雰囲気循環路を形成し、前記循環
ファンの下方にドーナツ状の邪魔板を配設するととも
に、この邪魔板の下方に前記バッフル内を上下に区画す
る多孔板を設け、炉内雰囲気を前記多孔板を介して下方
に噴出させてバッフル側板下方から前記雰囲気循環路に
循環させる炉内雰囲気循環式熱処理炉において、前記多
孔板を上部多孔板と下部多孔板とからなる二層構成とす
るとともに、いずれか一方の層の多孔板を炉幅方向で複
数枚に分割し、該分割した多孔板を各々単独に移動可能
に配設したことを特徴とする炉内雰囲気循環式熱処理
炉。1. An atmosphere circulation path is formed by a circulation fan provided in a ceiling portion of a furnace and a baffle provided in the furnace, and a donut-shaped baffle plate is disposed below the circulation fan. In a furnace atmosphere circulation type heat treatment furnace in which a perforated plate partitioning the inside of the baffle up and down is provided below, and the furnace atmosphere is ejected downward through the perforated plate and circulated from below the baffle side plate to the atmosphere circulation path, The perforated plate has a two-layer structure consisting of an upper perforated plate and a lower perforated plate, and the perforated plate of one of the layers is divided into a plurality of plates in the furnace width direction, and the divided perforated plates are individually moved. An atmosphere circulation type heat treatment furnace characterized by being arranged as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5489898A JP2895042B1 (en) | 1998-03-06 | 1998-03-06 | Atmosphere circulation type heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5489898A JP2895042B1 (en) | 1998-03-06 | 1998-03-06 | Atmosphere circulation type heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2895042B1 true JP2895042B1 (en) | 1999-05-24 |
| JPH11248361A JPH11248361A (en) | 1999-09-14 |
Family
ID=12983431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5489898A Expired - Fee Related JP2895042B1 (en) | 1998-03-06 | 1998-03-06 | Atmosphere circulation type heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2895042B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200065A (en) * | 2005-01-20 | 2006-08-03 | Toho Tenax Co Ltd | Flameproofing treatment furnace |
| JP5028777B2 (en) * | 2005-09-29 | 2012-09-19 | 株式会社Ｉｈｉ | Heat treatment equipment |
| CN103663954A (en) * | 2012-08-31 | 2014-03-26 | 昆山冠益玻璃有限公司 | Glass frame |
| CN104482763A (en) * | 2014-12-21 | 2015-04-01 | 湖北华夏窑炉工业(集团)有限公司 | Product effective loading space for SCR plate-type catalyst continuous vertical calcining furnace |
-
1998
- 1998-03-06 JP JP5489898A patent/JP2895042B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11248361A (en) | 1999-09-14 |
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