JPH0629467B2 - Cooling chamber temperature controller for heat treatment furnaces such as floating furnaces - Google Patents
Cooling chamber temperature controller for heat treatment furnaces such as floating furnacesInfo
- Publication number
- JPH0629467B2 JPH0629467B2 JP7879786A JP7879786A JPH0629467B2 JP H0629467 B2 JPH0629467 B2 JP H0629467B2 JP 7879786 A JP7879786 A JP 7879786A JP 7879786 A JP7879786 A JP 7879786A JP H0629467 B2 JPH0629467 B2 JP H0629467B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling chamber
- chamber
- cooling
- furnaces
- heat treatment
- 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 - Lifetime
Links
Landscapes
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は例えば焼鈍炉等の熱処理炉において、冷却風量
が一定の状態で被熱処理物の冷却速度を変化させるため
改良、即ち、熱処理炉における冷却室温度の制御装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is improved in a heat treatment furnace such as an annealing furnace for changing the cooling rate of an object to be heat treated with a constant cooling air volume, that is, in a heat treatment furnace. The present invention relates to a cooling chamber temperature control device.
〔従来の技術〕 一般に焼鈍炉等の熱処理炉においては加熱室において加
熱された被処理物を冷却室において冷却する場合におい
て、その冷却速度を変化させる事が要求される場合があ
る。そして冷却室において被熱処理物の冷却速度を可変
させる方法としては、従来下記の様な方法、即ち、 循環ファンの回転数を切り替える事によって、或いは
ダンパーを開閉させて循環風量を絞る事によってクーラ
ー通過流量を変化せる方法。即ち、クーラー通過流量を
少なくする事によって冷却室内のガス温度を上昇させ、
間、クーラー通過流量を多くする事によって冷却室内の
ガス温度を低下させる様にする方法。[Prior Art] Generally, in a heat treatment furnace such as an annealing furnace, when cooling an object to be processed heated in a heating chamber in a cooling chamber, it may be required to change the cooling rate. As a method of varying the cooling rate of the heat-treated object in the cooling chamber, the following method has been conventionally used: by changing the rotation speed of the circulation fan, or by opening and closing the damper to reduce the circulating air volume. How to change the flow rate. That is, increasing the gas temperature in the cooling chamber by decreasing the flow rate through the cooler,
During this period, the gas temperature in the cooling chamber is lowered by increasing the flow rate through the cooler.
第２図に表わす様にクーラーａを通過するガス流路ｂ
と平行させてクーラーａを通過しないガス流路（バイパ
スガス流路）ｃを設け、両ガス流路ｂ，ｃを通過するガ
スの流量割合をダンパーｄ，ｅの開閉を介して調整する
方法。即ち、全体の流量が一定量に保持された状態でダ
ンパーｄ，ｅの開閉を介してクーラーａを通過するガス
流路ｂ側の流量割合を多くする事によって冷却室ｆ内の
ガス温度を低下させ、又、クーラーを通過しないガス流
路（バイパスガス流路）ｃ側の流量割合を多くする事に
よって冷却室ｆ内のガス温度を上昇させる様にする方
法。（特開昭５１−１０５９０６号） が提案されている。As shown in FIG. 2, gas flow path b passing through cooler a
A gas flow path (bypass gas flow path) c that does not pass through the cooler a is provided in parallel with the above, and the flow rate ratio of the gas that passes through both gas flow paths b and c is adjusted by opening and closing the dampers d and e. That is, the gas temperature in the cooling chamber f is lowered by increasing the flow rate on the gas flow path b side that passes through the cooler a through opening and closing of the dampers d and e while keeping the total flow rate constant. In addition, the gas temperature in the cooling chamber f is increased by increasing the flow rate ratio on the gas flow passage (bypass gas flow passage) c side that does not pass through the cooler. (JP-A-51-105906) has been proposed.
しかして上記の方法にあっては風量が変化する事に起
因して被熱処理物がフロート出来なくなる点、又、風量
一定の場合であれば、被熱処理物が急冷により変形等品
質に悪影響を及ぼすという不具合を生ずる点に問題点を
有する。However, in the above method, the object to be heat-treated cannot be floated due to the change in the air volume, and if the air volume is constant, the object to be heat-treated will be rapidly cooled, which will adversely affect the quality such as deformation. There is a problem in that such a problem occurs.
又、の方法にあっては冷却室内を循環する冷却風量は
常時一定量に保持する事が出来るものの冷却室内の循環
ガスを使用して温度変化を得る様にしている事により大
きな冷却速度の調整幅が得られない点に問題点を有す
る。Further, in the method of (1), the cooling air volume circulating in the cooling chamber can be constantly maintained at a constant amount, but a large cooling rate is adjusted by using the circulating gas in the cooling chamber to obtain the temperature change. There is a problem in that the width cannot be obtained.
本発明は上記の様な問題点を解決する為にその改善を試
みたものであって、冷却室内を循環する冷却風量が常時
一定量に保持された状態にてその冷却速度を変化させる
事が出来る様にする点、特に、大きな冷却速度の調整幅
を得る事が出来る様にする点に本発明が解決すべき問題
点を有する。即ち、本発明は予熱室排ガス或いはレキュ
ーペレータ出口排ガスを冷却室に送り込み、同予熱室排
ガス或いはレキューペレータ出口排ガスの送り込み量を
制御する事によって冷却速度を変化させる様にした事を
特徴とするものであって、その具体的手段と作用は次の
通りである。The present invention has been made to improve the above-mentioned problems in order to solve the problems, and it is possible to change the cooling rate in a state where the amount of cooling air circulating in the cooling chamber is always kept constant. There is a problem to be solved by the present invention in that it can be done, especially in that it can obtain a large adjustment range of the cooling rate. That is, the present invention is characterized in that the cooling speed is changed by feeding the preheating chamber exhaust gas or the recuperator outlet exhaust gas into the cooling chamber and controlling the feed amount of the preheating chamber exhaust gas or the recuperator outlet exhaust gas. The specific means and action are as follows.
予熱室或いはレキューペレータ出口と冷却室間を繋ぐ連
通路を設け、同連通路の冷却室側の開口部をクーラーと
循環ファンとの間に形成する吸引通路に臨ませる。そし
て上記連通路には流量調整弁を設け、同流量調整弁の開
閉絞り量を冷却室内の温度変化と対応させて制御する事
が出来る様に設ける。A communication passage connecting the preheat chamber or the outlet of the recuperator and the cooling chamber is provided, and the opening of the communication passage on the cooling chamber side faces the suction passage formed between the cooler and the circulation fan. A flow rate adjusting valve is provided in the communication passage so that the opening / closing throttle amount of the flow rate adjusting valve can be controlled in correspondence with the temperature change in the cooling chamber.
予熱室或いはレキューペレータ出口排ガスを冷却室の吸
引通路に送り込む事により、同排ガスがクーラーによっ
て冷却された冷却室内の循環ガスと吸引通路において混
合されてその温度を変化させる事が出来る。即ち、吸引
通路に送り込まれる排ガス量に比例して冷却速度を変化
させる事が出来る。By sending the exhaust gas from the preheating chamber or the recuperator exit to the suction passage of the cooling chamber, the exhaust gas is mixed with the circulating gas in the cooling chamber cooled by the cooler in the suction passage and its temperature can be changed. That is, the cooling rate can be changed in proportion to the amount of exhaust gas sent to the suction passage.
以下に本発明の具体的な実施例を図示の図面について説
明する。Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図はフローティング式熱処理路の概略を表わす図面
であって、同熱処理炉において、１は予熱室、２は加熱
室、３は冷却室を夫々示す。そして同熱処理路には予熱
室１、加熱室２、冷却室３を貫通させて金属帯状材料
（ストリップ）４の搬送通路が設けられると共に、同搬
送通路を間に存して上下各一対のプレナムチャンバー
５，５が金属帯状材料（ストリップ）４との間に適宜の
隙間を存して対向配置され、同プレナムチャンバー５，
５より金属帯状材料（ストリップ）４に向けて熱風を噴
出させる事によって、同金属帯状材料（ストリップ）４
を浮揚させる事が出来る様に設けられる。又、予熱室１
と加熱室２には図示省略してあるが例えばヒーター或い
はラジアントチューブバーナー等の加熱源が適宜間隔毎
に配置される一方、冷却室３にはその上端部に位置して
循環ファン６が取り付けられると共に同循環ファン６と
対向させてクーラー７が取り付けられる。更に具体的に
は冷却室３の上端部には循環ファン６方向に向けて前後
方向に延在する吸引通路８と、循環ファン６より延出さ
せて上下方向に延在する吐出通路９が設けられ、上記ク
ーラー７は吸引通路８の入口部分に取り付けられる。一
方、１０は予熱室１より延設する予熱の排気通路であっ
て、同排気通路１０より連通路１１が分岐延設され、そ
の先端部は前記吸引通路８と連通する如く設けられる。
即ち、同連通路１１を介して予熱室１の予熱排ガスをク
ーラー７と循環ファン６間に送り込む事が出来る様に設
けられる。そして同連通路１１にはコントロールモータ
ー１２を介して流量調整弁１３がその開閉絞り量を調整
自在に設けられる。即ち、吐出通路９には温度センサー
１４が取り付けられると共に同温度センサー１４に連結
させて温度コントローラー１５が設けられ、同温度セン
サー１４と温度コントローラー１５を介して上記コント
ロールモーター１２の回転を制御する事により、流量調
整弁１３の開閉絞り量を調整する事が出来る様に設けら
れる。FIG. 1 is a view showing the outline of a floating type heat treatment path. In the heat treatment furnace, 1 is a preheating chamber, 2 is a heating chamber, and 3 is a cooling chamber. The heat treatment path is provided with a conveying passage for the metal strip material (strip) 4 penetrating the preheating chamber 1, the heating chamber 2 and the cooling chamber 3, and the pair of upper and lower plenums are provided with the conveying passage interposed therebetween. The chambers 5 and 5 are arranged so as to face the metal strip material (strip) 4 with an appropriate gap, and the plenum chamber 5 and
By blowing hot air toward the metal strip material (strip) 4 from 5, the metal strip material (strip) 4
It is provided so that the can be levitated. Also, preheating room 1
Although not shown in the drawing, the heating chamber 2 is provided with a heating source such as a heater or a radiant tube burner at appropriate intervals, while the cooling chamber 3 is provided with a circulation fan 6 at the upper end thereof. At the same time, a cooler 7 is attached so as to face the circulation fan 6. More specifically, the upper end of the cooling chamber 3 is provided with a suction passage 8 extending in the front-rear direction toward the circulation fan 6 and a discharge passage 9 extending from the circulation fan 6 and extending in the vertical direction. The cooler 7 is attached to the inlet portion of the suction passage 8. On the other hand, 10 is an exhaust passage for preheating extending from the preheating chamber 1. A communicating passage 11 is branched and extended from the exhaust passage 10, and a tip portion thereof is provided so as to communicate with the suction passage 8.
That is, the preheating exhaust gas in the preheating chamber 1 can be sent between the cooler 7 and the circulation fan 6 through the same communication passage 11. A flow rate adjusting valve 13 is provided in the communication passage 11 via a control motor 12 so that the opening / closing throttle amount can be adjusted. That is, a temperature sensor 14 is attached to the discharge passage 9, and a temperature controller 15 is provided so as to be connected to the temperature sensor 14, and the rotation of the control motor 12 is controlled via the temperature sensor 14 and the temperature controller 15. Thus, the opening / closing throttle amount of the flow rate adjusting valve 13 can be adjusted.
次にその作用について説明する。Next, the operation will be described.
冷却室３においてクーラー７と循環ファン６を駆動させ
る事により、クーラー７によって冷却されたガスを冷却
室３内に循環させて金属帯状材料（ストリップ）４を冷
却させる作用が得られる。即ち、循環ファン６の回転を
介して上記クーラー７によって冷却されたガスが吸引通
路８に吸引されると共に、この様にしてクーラー７によ
って冷却されて吸引通路８内に吸引されたガスを吐出通
路９より再び冷却室３に向けて送り出す作用が得られる
のであるが、冷却室３において上記の様な冷却作用が得
られている状態において、上記吸引通路８に対して予熱
室１内の予熱排ガスを送り込む事により、同吸引通路８
において同予熱排ガスとクーラー７によって冷却された
冷却室３内の循環ガスが混合されて同循環ガスの温度を
上昇させる作用が得られる。そしてこの様に予熱排ガス
が混合されて温度上昇したガスが冷却室３内を循環する
事によって金属帯状材料（ストリップ）４の冷却速度を
遅らせる作用が得られる。又、連通路１１にはコントロ
ールモーター１２に連結させて流量調整弁１３が取り付
けられる一方、冷却室３には温度センサー１４が取り付
けられると共に同温度センサー１４に連結させて温度コ
ントローラー１５が取り付けられ、同温度センサー１４
と温度コントローラー１５によって上記コントロールモ
ーター１２の回転を制御する事が出来る様に設けられて
いる事により、冷却室３内の温度変化と対応して流量調
整弁１３のその開閉絞り量をコントロールする事が出来
る。即ち、同流量調整弁１３のその開閉絞り量をコント
ロールする事により、冷却室３内の温度を設定温度に保
持する作用が得られる。By driving the cooler 7 and the circulation fan 6 in the cooling chamber 3, the gas cooled by the cooler 7 is circulated in the cooling chamber 3 to cool the metal strip material (strip) 4. That is, the gas cooled by the cooler 7 is sucked into the suction passage 8 through the rotation of the circulation fan 6, and the gas cooled in this way by the cooler 7 and sucked into the suction passage 8 is discharged. The function of sending the preheated exhaust gas toward the cooling chamber 3 again from 9 is obtained. However, in the state where the cooling function as described above is obtained in the cooling chamber 3, the preheating exhaust gas in the preheating chamber 1 with respect to the suction passage 8 is obtained. The same suction passage 8
In the above, the preheated exhaust gas and the circulating gas in the cooling chamber 3 cooled by the cooler 7 are mixed, and an effect of increasing the temperature of the circulating gas is obtained. The gas whose temperature has risen due to the mixing of the preheated exhaust gas circulates in the cooling chamber 3 in this way, thereby having the effect of slowing the cooling rate of the metal strip material (strip) 4. Further, a flow rate adjusting valve 13 is attached to the communication passage 11 by being connected to a control motor 12, while a temperature sensor 14 is attached to the cooling chamber 3 and a temperature controller 15 is attached to be connected to the temperature sensor 14. Same temperature sensor 14
By controlling the rotation of the control motor 12 by means of the temperature controller 15 and the temperature controller 15, the opening / closing throttle amount of the flow rate adjusting valve 13 can be controlled corresponding to the temperature change in the cooling chamber 3. Can be done. That is, by controlling the amount of opening / closing of the flow rate adjusting valve 13, the effect of maintaining the temperature in the cooling chamber 3 at the set temperature can be obtained.
尚、上記実施例においては予熱排ガスを冷却室３に送り
込む様にしているが、これに換えてレキューペレータ出
口排ガスを冷却室３に送り込む様にする事も可能であ
る。又、上記実施例においては冷却室が一つの場合につ
いて説明しているが、冷却室が複数の場合にちても実施
する事が可能である。又、図中では流量調整弁１３で流
量を制御しているが、おれが送風量可変の吸引ファンで
あってもよい。この場合は、ファンの回転数を制御する
か通路中に設けたダンパを制御すればよい。Although the preheated exhaust gas is sent to the cooling chamber 3 in the above embodiment, it is also possible to send the recuperator outlet exhaust gas to the cooling chamber 3 instead. Further, in the above embodiment, the case where there is one cooling chamber has been described, but it can be carried out even when there are a plurality of cooling chambers. Further, although the flow rate is controlled by the flow rate adjusting valve 13 in the figure, I may be a suction fan whose air flow rate is variable. In this case, the rotation speed of the fan may be controlled or the damper provided in the passage may be controlled.
本発明は以上の様に構成されるものであって、上記の様
に予熱室若しくはレキューペレータ出口排ガスを冷却室
に送り込み、同排ガス量を制御する事によって冷却室の
温度を変化させる様にした事により、冷却室内の循環風
量を変える事なく金属帯状材料（ストリップ）等の被熱
処理物の冷却速度を変える事が出来るに至った。The present invention is configured as described above, and as described above, the preheat chamber or the recuperator outlet exhaust gas is sent to the cooling chamber, and the temperature of the cooling chamber is changed by controlling the amount of the exhaust gas. As a result, it has become possible to change the cooling rate of the heat-treated object such as metal strip material (strip) without changing the circulating air volume in the cooling chamber.
特に本発明にあっては冷却室に対して予熱室若しくはレ
キューペレータ出口排ガスを送り込む事によって冷却室
の温度を変化させる様にした事により、その温度変化の
幅を大きくとる事が出来るに至った。即ち、大きな冷却
速度のコントロール幅を得る事が出来るに至った。Particularly, in the present invention, the temperature of the cooling chamber is changed by sending the exhaust gas from the preheating chamber or the recuperator to the cooling chamber, so that the range of the temperature change can be widened. It was That is, it became possible to obtain a large control range of the cooling rate.
第１図は本発明に係る冷却室温度制御装置を具備するフ
ローティング式熱処理炉の全体を表わす断面図、第２図
は従来構造の冷却室温度制御装置を表わす断面図であ
る。 １……予熱室、２……加熱室、３……冷却室、４……金
属帯状材料、５……プレナムチャンバー、６……循環フ
ァン、７……クーラー、８……吸引通路、９……吐出通
路、１０……排気通路、１１……連通炉、１２……コン
トロールモーター、１３……流量調整弁、１４……温度
センサー、１５……温度コントローラー。FIG. 1 is a sectional view showing an entire floating type heat treatment furnace equipped with a cooling chamber temperature control device according to the present invention, and FIG. 2 is a sectional view showing a cooling chamber temperature control device of a conventional structure. 1 ... Preheating chamber, 2 ... Heating chamber, 3 ... Cooling chamber, 4 ... Metal strip material, 5 ... Plenum chamber, 6 ... Circulation fan, 7 ... Cooler, 8 ... Suction passage, 9 ... ... Discharge passage, 10 ... Exhaust passage, 11 ... Communication furnace, 12 ... Control motor, 13 ... Flow control valve, 14 ... Temperature sensor, 15 ... Temperature controller.
Claims (1)
室間を繋ぐ連通路を設け、同連通路の冷却室側の開口部
をクーラーと循環ファンとの間に形成する吸引通路に臨
ませると共に胴連通路には流量調整弁を冷却室内の温度
変化と対応させてその開閉絞り量を調節可能に設けて成
るフローティング炉等の熱処理炉に於ける冷却室温度制
御装置。1. A communication passage that connects between the outlet of the preheating chamber or the recuperator and the cooling chamber is provided, and an opening of the communication passage on the cooling chamber side faces a suction passage formed between the cooler and the circulation fan. A cooling chamber temperature control device in a heat treatment furnace such as a floating furnace, in which a flow control valve is provided in the body communication passage so that the opening / closing throttle amount can be adjusted according to the temperature change in the cooling chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7879786A JPH0629467B2 (en) | 1986-04-04 | 1986-04-04 | Cooling chamber temperature controller for heat treatment furnaces such as floating furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7879786A JPH0629467B2 (en) | 1986-04-04 | 1986-04-04 | Cooling chamber temperature controller for heat treatment furnaces such as floating furnaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62235426A JPS62235426A (en) | 1987-10-15 |
| JPH0629467B2 true JPH0629467B2 (en) | 1994-04-20 |
Family
ID=13671853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7879786A Expired - Lifetime JPH0629467B2 (en) | 1986-04-04 | 1986-04-04 | Cooling chamber temperature controller for heat treatment furnaces such as floating furnaces |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629467B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679365U (en) * | 1993-04-28 | 1994-11-08 | 敏雄 宗 | pillow |
-
1986
- 1986-04-04 JP JP7879786A patent/JPH0629467B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679365U (en) * | 1993-04-28 | 1994-11-08 | 敏雄 宗 | pillow |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62235426A (en) | 1987-10-15 |
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