JP5107489B2 - Gas-cooled single-chamber heat treatment furnace - Google Patents

Gas-cooled single-chamber heat treatment furnace Download PDF

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Publication number
JP5107489B2
JP5107489B2 JP2001143299A JP2001143299A JP5107489B2 JP 5107489 B2 JP5107489 B2 JP 5107489B2 JP 2001143299 A JP2001143299 A JP 2001143299A JP 2001143299 A JP2001143299 A JP 2001143299A JP 5107489 B2 JP5107489 B2 JP 5107489B2
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Prior art keywords
cooling
inner chamber
cooling gas
gas
chamber
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JP2002333277A (en
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欣弥 木曽田
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Chugai Ro Co Ltd
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Chugai Ro Co Ltd
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Priority to JP2001143299A priority Critical patent/JP5107489B2/en
Priority to TW090132230A priority patent/TW544470B/en
Priority to US10/239,894 priority patent/US6821114B2/en
Priority to KR1020027013174A priority patent/KR20020093884A/en
Priority to CNB018084133A priority patent/CN1232660C/en
Priority to PCT/JP2001/011421 priority patent/WO2002066687A1/en
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【０００１】
【発明の属する技術分野】
本発明は、ガス冷却式単室型熱処理炉に関するものである。
【０００２】
【従来の技術】
金属材料を加熱後、冷却ガスを強制循環させて金属材料を冷却する炉としてガス冷却式単室型熱処理炉がある。
【０００３】
このガス冷却式単室型熱処理炉は、ダンパで開閉される冷却ガス用通気口を対向壁に設けたインナーチャンバ（処理室）がケーシング内に設けられ、金属材料の加熱時には、前記ダンパで冷却ガス用通気口を閉とし、インナーチャンバ内に収容した金属材料をインナーチャンバ内に設けたヒータで加熱する。そして、冷却時には、前記冷却ガス用通気口を開放するとともに前記ケーシングに取り付けた循環ファンにより一方の冷却ガス用通気口からクーラで冷却された冷却ガスをインナーチャンバ内に供給して金属材料を冷却し、他方の冷却ガス用通気口から循環ファンへと循環して金属材料を冷却する。
【０００４】
そして、前記冷却ガス用通気口は、インナーチャンバ内の金属材料に十分な冷却ガスを供給できるように、その開口面積は大きくとってあり、また、この冷却ガス用通気口の開閉はスライド式あるいは昇降式ダンパで行っている。
【０００５】
【発明が解決しようとする課題】
ところで、前記従来のガス冷却式単室型熱処理炉においては、前記冷却ガス用通気口は、単なる開口であるため、冷却時におけるインナーチャンバ内での冷却ガスの流れは冷却ガス用通気口の中央部に偏る傾向があって金属材料を均一に冷却することができなかった。
【０００６】
また、ダンパがスライド式のものでは、ダンパを冷却ガス用通気口に対し平行移動させるため、ダンパ閉止時のシール性を向上させるためにはダンパとインナーチャンバのクリアランスを極力小さくする必要があるが、小さくし過ぎるとダンパやインナーチャンバに少しの熱歪みが生じても動作不良が生じ、良好なシール性を長時間維持することができず、インナーチャンバ内の温度分布に悪影響を与えることがあった。
【０００７】
さらに、ダンパが昇降式のものであっても、インナーチャンバの冷却ガス用通気口の熱歪みにより十分なシール性を維持することができない等の課題を有していた。
【０００８】
したがって、本発明は、冷却時に冷却ガスの流れがインナーチャンバに設けたガス冷却用通気口の中央部に偏らないガス冷却式単室型熱処理炉を提供することを第１の目的とし、また、第１の目的に加えてダンパとインナーチャンバとのシール性が良いガス冷却式単室型熱処理炉を提供することを第２の目的とする。
【０００９】
【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、ケーシングの中央部に処理室を形成するインナーチャンバを配設し、前記インナーチャンバの上部と下部にダンパにより開閉される冷却ガス用通気口を設け、ガス冷却時に前記冷却ガス用通気口を開状態として冷却ガスを循環させるガス冷却式単室型熱処理炉において、
前記ケーシングの一端側に加熱用循環ファンを取り付けて前記加熱用循環ファンの羽根車を前記インナーチャンバの一端側に設けた扉の内部に位置させ、
前記ケーシングの他端側の内部に前記冷却ガスの冷却用循環ファンを設け、
前記冷却用循環ファンから前記冷却ガスが一方の前記冷却ガス用通気口を経て前記インナーチャンバの内部に入る吐出流路と、前記インナーチャンバの内部から前記冷却ガスが他方の前記冷却ガス用通気口を経て前記冷却用循環ファンに吸引される吸引流路を形成し、
前記インナーチャンバの冷却ガス用通気口に冷却ガスを整流する耐熱材料からなる格子状整流部材を設置した構成としたものである。
【００１０】
また、前記ダンパが昇降式であって、前記ダンパ周囲部の前記インナーチャンバとの圧接部が突起部と陥没部との噛み合せ構造としたものである。
【００１１】
なお、前記格子状整流部材は、カーボン・グラファイト繊維コンポジット製薄板から構成することが好ましい。
【００１２】
【発明の実施の形態】
つぎに、本発明の実施の形態について図１〜図５にしたがって説明する。
図において、Ｔは本発明にかかるガス冷却式単室型熱処理炉（以下、熱処理炉という）で、ケーシング１の中央部には処理室であるインナーチャンバ５が配設されるとともに、ケーシング１の一方側には前記インナーチャンバ５の扉６を備えた装入・抽出扉２が設けられ、他方側には冷却用循環ファン３が設けられている。
【００１３】
そして、インナーチャンバ５内にはヒータ７が配設されるとともに、インナーチャンバ５の天井部および底部には、インナーチャンバ５に設けた載置部材８上に載置される最大金属材料Ｗに見合う大面積の冷却ガス用通気口（以下、通気口という）９Ａ，９Ｂが設けられ、この通気口９Ａ，９Ｂはそれぞれ前記ケーシング１に取り付けた昇降式ダンパ１１Ａ，１１Ｂにより開閉されるようになっている。
【００１４】
また、前記装入・抽出扉２には加熱用循環ファン１３が取り付けられ、その羽根車１３ａは前記インナーチャンバ５の扉６内に位置する。
【００１５】
さらに、図３に示すように、前記インナーチャンバ５の本体上面および下面先端部から前記冷却用循環ファン３の吸引部にかけてインナーチャンバ５を覆うようにマッフル１５が設けられるとともに、インナーチャンバ５の冷却用循環ファン３側の側壁５ａの下方とマッフル１５との間の空間は仕切板１７で閉鎖され、ケーシング１とインナーチャンバ５との間に雰囲気吐出流路Ｐａと雰囲気吸引流路Ｐｂとを形成する。また、前記雰囲気吐出流路Ｐａの前記冷却ファン３側にはクーラ１８が設けられるとともに、前記マッフル１５の前記通気口９Ａ，９Ｂに対向する部分には、ダンパ１１Ａ，１１Ｂの押圧部１２とほぼ同形の開口１６Ａ，１６Ｂが設けられている。
【００１６】
そして、図４に示すように、前記通気口９Ａ，９Ｂの外側周縁部には突起部１０が形成される一方、前記ダンパ１１Ａ，１１Ｂの押圧部１２には前記突起部１０がゆるく嵌合する凹部１４が形成されている。なお、凹部１４の幅は前記突起部１０の熱膨張代をみて突起部１０の幅より若干大となっており、常温におけるダンパ１１Ａ，１１Ｂの押圧時には前記突起部１０の先端が凹部１４の底部に圧接するようになっている。
【００１７】
また、前記通気口９内には、図５に示すような格子状整流部材１９が組み込まれている。
【００１８】
この格子状整流部材１９は、耐熱材料（耐熱鋼またはカーボン・グラファイト繊維コンポジット製）からなる板材２０を切れ目２１により格子状に組み合わせて構成したもので、前記通気口９Ａ，９Ｂより若干内方に位置し、ダンパ１１Ａ，１１Ｂ（押圧部１２）の作動に支障を与えないように組み込んだものである。
【００１９】
つぎに、前記構成からなるガス冷却式単室型熱処理炉Ｔの操業方法を説明する。
【００２０】
まず、前記ダンパ１１Ａ，１１Ｂの押圧部１２で前記通気口９Ａ，９Ｂを閉鎖し、装入・抽出扉２をインナーチャンバ５の扉６と一緒に開き、インナーチャンバ５内に金属材料Ｗを装入し、前記装入・抽出扉２および扉６を閉じ、ヒータ７をＯＮとするとともに前記加熱用循環ファン１３を駆動してインナーチャンバ５内の雰囲気を循環させながら金属材料Ｗを対流加熱する（図１）。
【００２１】
ところで、加熱時、インナーチャンバ５とダンパ１１Ａ，１１Ｂの押圧部１２との圧着部は熱膨張等により変形し両者の圧着部に間隙が生じ金属材料Ｗの均一加熱に影響を及ぼすが、前述のように、両者は突起部１０と凹部１４とで噛み合い状態となっているため、突起部１０先端と凹部１４底部との間に隙間が生じても、いわゆるラビリンス構成となってシール性を確保し、金属材料Ｗの温度分布に余り影響を及ぼすことはない。
【００２２】
そして、金属材料Ｗが焼入温度に達すると、ヒータ７をＯＦＦとするとともに前記昇降用ダンパ１１Ａ，１１Ｂを駆動して前記通気口９Ａ，９Ｂを開口したうえで冷却用循環ファン３を駆動する。
【００２３】
すなわち、前記一方の昇降用ダンパ１１Ａはマッフル１５に設けた開口１６Ａを閉とし、他方の昇降用ダンパ１１Ｂはマッフル１５に設けた開口１６Ｂを開とする（図２）。
【００２４】
したがって、冷却用循環ファン３からクーラ１８を介して吐出した冷却ガスは雰囲気吐出流路Ｐａを通って開口１６Ｂ、通気口９Ｂからインナーチャンバ５に入り通気口９Ａを経て雰囲気吸引流路Ｐ２から冷却用循環ファン３へ吸引され前記工程を繰り返す。
【００２５】
ところで、通気口９Ａ，９Ｂには格子状整流部材１９が装着されているため、冷却ガスは整流され、その状態を保持しながら通気口９Ａから排気され、金属材料Ｗは均一に冷却されることになる。
【００２６】
また、前記格子状整流部材１９は耐熱鋼板であってもよいが、インナーチャンバ５内の冷却効果を向上させるには、ガス圧や風量を増加させる必要があるが、このようにすると材料強度を高める必要がある。そして、材料強度を高めるために耐熱鋼板の厚みを大きく（重量大）すると、インナーチャンバ５内の蓄熱量が増大し、加熱および冷却時の応答性が低下したり熱ロスが増大するため、格子状整流部材１９の材料として、カーボン・グラファイト繊維コンポジット製の薄板を使用するのが好ましい。
【００２７】
さらに、格子状整流部材１９を板の組み合わせにより構成すると、各格子の大きさ等を調整することができるという効果もある。
【００２８】
【発明の効果】
以上の説明で明らかなように、請求項１の発明ではインナーチャンバの冷却ガス用通気口に格子状整流部材を設置して、インナーチャンバへの流入ガスと排出ガスの流れを規制して冷却ガスのインナーチャンバでの冷却ガス用通気口中央への偏流を減少させたので、金属材料を均一に冷却することができる。
【００２９】
請求項２の発明においては、ダンパとインナーチャンバの冷却ガス用通気口との周囲部に形成する圧接部を突起部と陥没部との噛み合せ構造としたため、仮に熱膨張等により前記突起部の先端部と陥没部との間に間隙が生じてもラビリンス構成となってシール性が確保され、インナーチャンバ内の温度分布が乱されることがない。
【００３０】
さらに、請求項３の発明によれば、格子状整流部材をカーボン・グラファイト繊維コンポジット製薄板から構成したため、蓄熱量が小さく加熱および冷却時の応答性を何ら阻害せず、かつ、強度が大であるため、何の支障もなく大風量の冷却ガスの流通が可能であるという効果を奏する。
【図面の簡単な説明】
【図１】 本発明のガス冷却式単室型熱処理炉の加熱時の状態を示す断面図。
【図２】 本発明のガス冷却式単室型熱処理炉の冷却時の状態を示す断面図。
【図３】 図１のIII−III線断面図。
【図４】 図１のインナーチャンバの冷却ガス用通気口とダンパ部分の拡大断面図。
【図５】 図１の格子状整流部材の斜視図。
【符号の説明】
１〜ケーシング、２〜装入・抽出扉、３〜冷却用循環ファン、５〜インナーチャンバ、６〜扉、７〜ヒータ、８〜載置部、９Ａ，９Ｂ〜冷却ガス用通気口、１０〜突起部、１１Ａ、１１Ｂ〜ダンパ、１２〜押圧部、１３〜加熱用循環ファン、１４〜凹部、１５〜マッフル、１６Ａ，１６Ｂ〜開口、１８〜クーラ、１９〜格子状整流部材、Ｗ〜金属材料。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas-cooled single chamber heat treatment furnace.
[0002]
[Prior art]
As a furnace for cooling a metal material by forcibly circulating a cooling gas after heating the metal material, there is a gas-cooled single-chamber heat treatment furnace.
[0003]
In this gas-cooled single-chamber heat treatment furnace, an inner chamber (processing chamber) in which a cooling gas vent that is opened and closed by a damper is provided in the opposite wall is provided in the casing, and the metal material is cooled by the damper when heating the metal material. The gas vent is closed and the metal material accommodated in the inner chamber is heated by a heater provided in the inner chamber. During cooling, the cooling gas vent is opened and the cooling gas cooled by the cooler from one cooling gas vent is supplied into the inner chamber by a circulation fan attached to the casing to cool the metal material. Then, the metal material is cooled by circulating from the other cooling gas vent to the circulation fan.
[0004]
The opening area of the cooling gas vent is large so that sufficient cooling gas can be supplied to the metal material in the inner chamber. This is done with a lifting damper.
[0005]
[Problems to be solved by the invention]
By the way, in the conventional gas-cooled single-chamber heat treatment furnace, the cooling gas vent is merely an opening, so the flow of the cooling gas in the inner chamber during cooling is the center of the cooling gas vent. The metal material could not be uniformly cooled due to the tendency to be biased to the part.
[0006]
In addition, when the damper is of a slide type, the damper is moved in parallel with the cooling gas vent. Therefore, in order to improve the sealing performance when the damper is closed, it is necessary to reduce the clearance between the damper and the inner chamber as much as possible. If it is too small, even if a slight thermal distortion occurs in the damper or the inner chamber, a malfunction may occur, a good sealing performance cannot be maintained for a long time, and the temperature distribution in the inner chamber may be adversely affected. It was.
[0007]
Furthermore, even if the damper is a liftable type, there is a problem that sufficient sealing performance cannot be maintained due to thermal distortion of the cooling gas vent of the inner chamber.
[0008]
Accordingly, the first object of the present invention is to provide a gas-cooled single-chamber heat treatment furnace in which the flow of cooling gas is not biased toward the center of the gas-cooling vent provided in the inner chamber during cooling. In addition to the first object, a second object is to provide a gas-cooled single-chamber heat treatment furnace having a good sealing property between the damper and the inner chamber.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an inner chamber that forms a processing chamber in the center of the casing, and has cooling gas vents that are opened and closed by dampers at the upper and lower portions of the inner chamber. In the gas-cooled single-chamber heat treatment furnace that circulates the cooling gas with the cooling gas vent opened during cooling,
A heating circulation fan is attached to one end side of the casing, and the impeller of the heating circulation fan is positioned inside a door provided on one end side of the inner chamber,
A cooling fan for cooling the cooling gas is provided inside the other end of the casing.
A discharge passage from which the cooling gas enters the inside of the inner chamber through one cooling gas vent from the cooling circulation fan, and the cooling gas vent from the inside of the inner chamber to the other cooling gas vent Forming a suction flow path sucked by the cooling circulation fan through
A grid-like rectifying member made of a heat-resistant material that rectifies the cooling gas is installed in the cooling gas vent of the inner chamber.
[0010]
The front Symbol damper an elevating, pressure-contact portion between the inner chamber of the damper around portion is obtained by the engagement structure between the depressions and the projections.
[0011]
The grid-like rectifying member is preferably composed of a thin sheet made of carbon / graphite fiber composite.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIGS.
In the figure, T is a gas-cooled single-chamber heat treatment furnace (hereinafter referred to as a heat treatment furnace) according to the present invention, and an inner chamber 5 as a treatment chamber is disposed at the center of the casing 1 and the casing 1 A charging / extracting door 2 having the door 6 of the inner chamber 5 is provided on one side, and a cooling circulation fan 3 is provided on the other side.
[0013]
A heater 7 is disposed in the inner chamber 5, and the ceiling portion and the bottom portion of the inner chamber 5 correspond to the maximum metal material W placed on the placing member 8 provided in the inner chamber 5. Large-area cooling gas vents (hereinafter referred to as vents) 9A and 9B are provided, and these vents 9A and 9B are opened and closed by elevating dampers 11A and 11B attached to the casing 1, respectively. Yes.
[0014]
A heating circulation fan 13 is attached to the charging / extracting door 2, and its impeller 13 a is located in the door 6 of the inner chamber 5.
[0015]
Further, as shown in FIG. 3, a muffle 15 is provided so as to cover the inner chamber 5 from the upper end of the main body and the lower surface of the inner chamber 5 to the suction portion of the cooling circulation fan 3, and cooling of the inner chamber 5. The space between the lower side wall 5a on the circulating fan 3 side and the muffle 15 is closed by a partition plate 17, and an atmosphere discharge passage Pa and an atmosphere suction passage Pb are formed between the casing 1 and the inner chamber 5. To do. In addition, a cooler 18 is provided on the cooling fan 3 side of the atmosphere discharge flow path Pa, and a portion of the muffle 15 facing the vents 9A and 9B is substantially the same as the pressing portion 12 of the dampers 11A and 11B. Openings 16A and 16B having the same shape are provided.
[0016]
As shown in FIG. 4, a protrusion 10 is formed on the outer peripheral edge of the vents 9A and 9B, while the protrusion 10 is loosely fitted to the pressing part 12 of the dampers 11A and 11B. A recess 14 is formed. The width of the recess 14 is slightly larger than the width of the projection 10 in view of the thermal expansion allowance of the projection 10, and the tip of the projection 10 is the bottom of the recess 14 when the dampers 11 </ b> A and 11 </ b> B are pressed at room temperature. It comes to come into pressure contact with.
[0017]
A lattice-like rectifying member 19 as shown in FIG.
[0018]
The lattice-like rectifying member 19 is configured by combining plate members 20 made of a heat-resistant material (made of heat-resistant steel or carbon / graphite fiber composite) in a lattice shape with cuts 21 and slightly inward from the vents 9A and 9B. It is positioned and incorporated so as not to hinder the operation of the dampers 11A and 11B (pressing portion 12).
[0019]
Next, an operation method of the gas-cooled single chamber heat treatment furnace T having the above-described configuration will be described.
[0020]
First, the vents 9A and 9B are closed by the pressing portions 12 of the dampers 11A and 11B, the charging / extracting door 2 is opened together with the door 6 of the inner chamber 5, and the metal material W is loaded in the inner chamber 5. The charging / extraction door 2 and the door 6 are closed, the heater 7 is turned on, and the heating circulation fan 13 is driven to convectionly heat the metal material W while circulating the atmosphere in the inner chamber 5. (FIG. 1).
[0021]
By the way, during heating, the pressure bonding portion between the inner chamber 5 and the pressing portion 12 of the dampers 11A and 11B is deformed due to thermal expansion or the like, and a gap is formed between both the pressure bonding portions, affecting the uniform heating of the metal material W. Thus, since both are meshed with the protrusion 10 and the recess 14, even if a gap is formed between the tip of the protrusion 10 and the bottom of the recess 14, a so-called labyrinth configuration is provided to ensure sealing performance. The temperature distribution of the metal material W is not significantly affected.
[0022]
When the metal material W reaches the quenching temperature, the heater 7 is turned off and the elevating dampers 11A and 11B are driven to open the vent holes 9A and 9B, and then the cooling circulation fan 3 is driven. .
[0023]
That is, the one lifting damper 11A closes the opening 16A provided in the muffle 15, and the other lifting damper 11B opens the opening 16B provided in the muffle 15 (FIG. 2).
[0024]
Therefore, the cooling circulation fan 3 from the cooling gas discharged via the cooler 18 through the atmosphere discharging passage Pa opening 16B, from the atmosphere suction passage P 2 through the vent 9A enters the inner chamber 5 from the ventilation openings 9B The process is repeated by being sucked into the cooling circulation fan 3.
[0025]
By the way, since the lattice-like rectifying member 19 is attached to the vents 9A and 9B, the cooling gas is rectified and exhausted from the vent 9A while maintaining the state, so that the metal material W is uniformly cooled. become.
[0026]
Further, the lattice-like rectifying member 19 may be a heat-resistant steel plate, but in order to improve the cooling effect in the inner chamber 5, it is necessary to increase the gas pressure and the air volume. Need to increase. If the thickness of the heat-resistant steel sheet is increased (heavy weight) in order to increase the material strength, the amount of heat stored in the inner chamber 5 increases, and the responsiveness during heating and cooling decreases and the heat loss increases. It is preferable to use a thin plate made of carbon / graphite fiber composite as the material of the rectifying member 19.
[0027]
Furthermore, when the grid-like rectifying member 19 is constituted by a combination of plates, there is an effect that the size and the like of each grid can be adjusted.
[0028]
【Effect of the invention】
As apparent from the above description, in the invention of claim 1, a grid-like rectifying member is installed in the cooling gas vent of the inner chamber, and the flow of the inflow gas and the exhaust gas to the inner chamber is regulated to provide the cooling gas. Since the drift to the center of the cooling gas vent in the inner chamber is reduced, the metal material can be uniformly cooled.
[0029]
In the invention of claim 2, since the press-contact portion formed around the damper and the cooling gas vent of the inner chamber has a meshing structure of the protruding portion and the recessed portion, the tip of the protruding portion is temporarily assumed by thermal expansion or the like. Even if a gap is formed between the recessed portion and the depressed portion, a labyrinth configuration is achieved to ensure sealing performance, and the temperature distribution in the inner chamber is not disturbed.
[0030]
Furthermore, according to the invention of claim 3, since the grid-like rectifying member is composed of a thin plate made of carbon / graphite fiber composite, the heat storage amount is small, the responsiveness during heating and cooling is not hindered, and the strength is high. Therefore, there is an effect that a large amount of cooling gas can be circulated without any trouble.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a heating state of a gas-cooled single chamber heat treatment furnace of the present invention.
FIG. 2 is a cross-sectional view showing a cooling state of the gas-cooled single chamber heat treatment furnace of the present invention.
3 is a sectional view taken along line III-III in FIG.
4 is an enlarged cross-sectional view of a cooling gas vent and a damper portion of the inner chamber of FIG. 1. FIG.
5 is a perspective view of the lattice-shaped rectifying member in FIG. 1. FIG.
[Explanation of symbols]
1 to casing, 2 charging / extraction door, 3 cooling fan, 5 inner chamber, 6 door, 7 heater, 8 mounting part, 9A, 9B cooling air vent, 10 Projection part, 11A, 11B to damper, 12 to pressing part, 13 to circulating fan for heating, 14 to recess, 15 to muffle, 16A and 16B to opening, 18 to cooler, 19 to grid-like rectifying member, W to metal material .

Claims (3)

ケーシングの中央部に処理室を形成するインナーチャンバを配設し、前記インナーチャンバの上部と下部にダンパにより開閉される冷却ガス用通気口を設け、ガス冷却時に前記冷却ガス用通気口を開状態として冷却ガスを循環させるガス冷却式単室型熱処理炉において、
前記ケーシングの一端側に加熱用循環ファンを取り付けて前記加熱用循環ファンの羽根車を前記インナーチャンバの一端側に設けた扉の内部に位置させ、
前記ケーシングの他端側の内部に前記冷却ガスの冷却用循環ファンを設け、
前記冷却用循環ファンから前記冷却ガスが一方の前記冷却ガス用通気口を経て前記インナーチャンバの内部に入る吐出流路と、前記インナーチャンバの内部から前記冷却ガスが他方の前記冷却ガス用通気口を経て前記冷却用循環ファンに吸引される吸引流路を形成し、
前記インナーチャンバの冷却ガス用通気口に冷却ガスを整流する耐熱材料からなる格子状整流部材を設置したことを特徴とするガス冷却式単室型熱処理炉。An inner chamber that forms a processing chamber is disposed in the center of the casing, and a cooling gas vent that is opened and closed by a damper is provided in the upper and lower portions of the inner chamber, and the cooling gas vent is opened during gas cooling. In a gas-cooled single-chamber heat treatment furnace that circulates a cooling gas as
A heating circulation fan is attached to one end side of the casing, and the impeller of the heating circulation fan is positioned inside a door provided on one end side of the inner chamber,
A cooling fan for cooling the cooling gas is provided inside the other end of the casing.
A discharge passage from which the cooling gas enters the inside of the inner chamber through one cooling gas vent from the cooling circulation fan, and the cooling gas vent from the inside of the inner chamber to the other cooling gas vent Forming a suction flow path sucked by the cooling circulation fan through
A gas-cooled single-chamber heat treatment furnace characterized in that a grid-like rectifying member made of a heat-resistant material that rectifies the cooling gas is installed in the cooling gas vent of the inner chamber. 前記ダンパが昇降式であって、前記ダンパ周囲部の前記インナーチャンバとの圧接部が突起部と陥没部との噛み合せ構造であることを特徴とする前記請求項１に記載のガス冷却式単室型熱処理炉。 Before SL damper a liftable, the damper peripheral portion of the inner chamber and the claim 1 Gas-cooled single according to the pressure contact portion is characterized by a mating structure of the depressions and the projections of Chamber heat treatment furnace. 前記格子状整流部材が、カーボン・グラファイト繊維コンポジット製薄板からなることを特徴とする前記請求項１あるいは請求項２のいずれかに記載のガス冷却式単室型熱処理炉。  The gas-cooled single-chamber heat treatment furnace according to claim 1 or 2, wherein the lattice-shaped rectifying member is made of a carbon-graphite fiber composite thin plate.
JP2001143299A 2001-02-22 2001-05-14 Gas-cooled single-chamber heat treatment furnace Expired - Fee Related JP5107489B2 (en)

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JP2001143299A JP5107489B2 (en) 2001-05-14 2001-05-14 Gas-cooled single-chamber heat treatment furnace
TW090132230A TW544470B (en) 2001-02-22 2001-12-25 A gas-cooled single-chamber type heat-treating furnace and a gas cooling process in the furnace
US10/239,894 US6821114B2 (en) 2001-02-22 2001-12-26 Gas-cooled single chamber heat treating furnace, and method for gas cooling in the furnace
KR1020027013174A KR20020093884A (en) 2001-02-22 2001-12-26 Gas-cooled single chamber heat treatment furnace, and method for gas cooling in the furnace
CNB018084133A CN1232660C (en) 2001-02-22 2001-12-26 Gas-cooled single chamber heat treating furnace, and method for gas cooling in furnace
PCT/JP2001/011421 WO2002066687A1 (en) 2001-02-22 2001-12-26 Gas-cooled single chamber heat treating furnace, and method for gas cooling in the furnace

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JP4280981B2 (en) * 2003-06-27 2009-06-17 株式会社Ｉｈｉ Cooling gas air path switching device for vacuum heat treatment furnace
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