JPH0222317B2 - - Google Patents
Info
- Publication number
- JPH0222317B2 JPH0222317B2 JP16714186A JP16714186A JPH0222317B2 JP H0222317 B2 JPH0222317 B2 JP H0222317B2 JP 16714186 A JP16714186 A JP 16714186A JP 16714186 A JP16714186 A JP 16714186A JP H0222317 B2 JPH0222317 B2 JP H0222317B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- far
- temperature
- product
- heating
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 47
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 18
- 238000005192 partition Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Tunnel Furnaces (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、ブラウン管等のガラス製品の熱処
理に用いて好適な熱処理炉に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a heat treatment furnace suitable for use in heat treatment of glass products such as cathode ray tubes.
［従来の技術］
従来、この種の熱処理炉としては、たとえばラ
ジアントチユーブ方式の熱処理炉がある。この熱
処理炉は、炉本体の内部に複数のラジアントチユ
ーブを炉壁に沿つて配置するとともに、炉内雰囲
気を撹拌するフアンを設けてなるものであつて、
ラジアントチユーブ内でガスを燃焼させて炉内雰
囲気温度を高め、これによつて炉内の製品を加熱
するとともに、炉内雰囲気温度を漸次下げて製品
を徐冷するように構成したものである。[Prior Art] Conventionally, as this type of heat treatment furnace, there is, for example, a radiant tube type heat treatment furnace. This heat treatment furnace has a plurality of radiant tubes arranged inside the furnace body along the furnace wall, and is equipped with a fan for stirring the atmosphere inside the furnace.
The furnace is configured to burn gas in the radiant tube to raise the furnace atmosphere temperature, thereby heating the product inside the furnace, and to gradually lower the furnace atmosphere temperature to gradually cool the product.
ところで、このような熱処理炉においてガラス
製品を加熱する場合には、まず炉内雰囲気に暴露
されているガラス素材の表面側が加熱され、その
熱エネルギーが裏面側に伝わつて全体が昇温す
る。また、製品を徐冷する場合には、ガラス素材
の表面側から熱エネルギーが奪われ、裏面側の熱
エネルギーが表面側に伝わつて全体が冷却され
る。 By the way, when a glass product is heated in such a heat treatment furnace, the front side of the glass material exposed to the atmosphere in the furnace is first heated, and the thermal energy is transmitted to the back side, raising the temperature of the entire product. Furthermore, when slowly cooling a product, thermal energy is removed from the front side of the glass material, and thermal energy from the back side is transmitted to the front side, cooling the entire glass material.
［発明が解決しようとする問題点］
ところが、ブラウン管等のようにガラス素材の
厚さが比較的厚いものを熱処理する場合には、昇
降温時においてガラス素材の表面側と裏面側の温
度差が大きくなり、それらにおける熱膨張長さの
差により製品が割れることがある。このため、上
記のような加熱炉では、ガラス素材の表面側と裏
面側において大きな温度差が生じないようにする
ために製品の昇降温速度を極めて遅く設定しなけ
ればならず、熱処理の作業効率が悪いばかりか燃
料費が割高になつてしまうという問題があつた。[Problems to be Solved by the Invention] However, when heat treating a relatively thick glass material such as a cathode ray tube, there is a temperature difference between the front side and the back side of the glass material as the temperature rises and falls. The product may crack due to the difference in thermal expansion length between them. For this reason, in the above-mentioned heating furnace, the rate of temperature rise and fall of the product must be set extremely slow to prevent a large temperature difference between the front and back sides of the glass material, which reduces the work efficiency of heat treatment. Not only was the problem bad, but fuel costs were also high.
［発明の目的］
この発明は、上記事情に鑑みてなされたもの
で、ガラス製品を短時間で昇降温させることがで
き、したがつて、熱処理の作業効率を向上させる
ことができるのは勿論のこと、燃料費を低減する
ことができる熱処理炉を提供することを目的とす
る。[Purpose of the Invention] This invention was made in view of the above circumstances, and it is possible to raise and lower the temperature of glass products in a short time, and therefore it is possible to improve the work efficiency of heat treatment. In other words, it is an object of the present invention to provide a heat treatment furnace that can reduce fuel costs.
［問題点を解決するための手段］
この発明の熱処理炉は、炉本体の内部に、炉壁
から離間して配置され、かつ加熱されて内部を向
く表面から遠赤外線を照射する遠赤外線パネル
と、この遠赤外線パネルの縁部と上記炉壁との〓
間を遮蔽する仕切板と、上記遠赤外線パネルと上
記炉壁との間の雰囲気を加熱する加熱手段と、こ
の加熱手段によつて加熱された雰囲気を上記仕切
板に設けた通気部を通して上記遠赤外線パネルの
内側と外側との間で循環させる空気循環機構とを
備えて構成したものである。[Means for Solving the Problems] The heat treatment furnace of the present invention includes a far-infrared panel arranged inside the furnace body at a distance from the furnace wall, and which emits far-infrared rays from a heated surface facing the inside. , the distance between the edge of this far-infrared panel and the furnace wall
a heating means for heating the atmosphere between the far-infrared panel and the furnace wall; and a heating means for heating the atmosphere between the far-infrared panel and the furnace wall; It is configured to include an air circulation mechanism that circulates air between the inside and outside of the infrared panel.
［作用］
上記構成の熱処理炉においてガラス製品を加熱
する場合には、遠赤外線パネルから高温の遠赤外
線が照射され、これがガラス素材を透過する際に
遠赤外線が有する熱エネルギーをガラス素材内部
に放出するから、ガラス素材が表面側から裏面側
にかけて均一に加熱される。また、ガラス製品を
徐冷する場合には、遠赤外線パネルから製品温度
よりも低温の遠赤外線が照射され、これがガラス
素材を透過する際にガラス素材内部の熱エネルギ
ーを吸収するから、ガラス素材が表面側から裏面
側にかけて均一に冷却される。したがつて、製品
を短時間で昇降温させてもガラス素材に温度差が
生じることがなく、製品に割れが発生することが
ない。[Function] When heating a glass product in a heat treatment furnace with the above configuration, high-temperature far-infrared rays are irradiated from a far-infrared panel, and when this passes through the glass material, the thermal energy of the far-infrared rays is released into the inside of the glass material. Therefore, the glass material is heated evenly from the front side to the back side. In addition, when slowly cooling glass products, far infrared rays at a temperature lower than the product temperature are irradiated from a far infrared panel, and when this passes through the glass material, it absorbs the thermal energy inside the glass material. Cooling is uniform from the front side to the back side. Therefore, even if the temperature of the product is raised or lowered in a short period of time, there will be no temperature difference in the glass material, and no cracks will occur in the product.
［実施例］
以下、第１図を参照しながら本発明の一実施例
について説明する。第１図は、実施例の熱処理炉
を示す断面図である。この図に示す熱処理炉は、
ブラウン管の内部を真空排気する際にこれを加熱
し、その内部に収納された電子機器から例えばハ
ンダに付着したペースト等の不純物を蒸発させる
ためのものであつて、加熱領域、恒温保持領域お
よび徐冷領域をそれぞれ複数台で連俗的に構成す
ることにより、搬送される複数のブラウン管の連
続的な熱処理を可能とするものである。[Example] Hereinafter, an example of the present invention will be described with reference to FIG. FIG. 1 is a sectional view showing a heat treatment furnace of an example. The heat treatment furnace shown in this figure is
It heats the inside of the cathode ray tube when it is evacuated and evaporates impurities such as paste attached to solder from the electronic equipment housed inside. By configuring a plurality of cold regions in a continuous manner, it is possible to continuously heat treat a plurality of transported cathode ray tubes.
図において符号１は、炉本体である。炉本体１
は底壁２、側壁（炉壁）３および天井壁４から構
成された筒状をなすものであつて、その内部に
は、側壁３に沿つて奥行方向（図中矢印Ａ方向）
へ向かつて延びるラジアントチユーブ（加熱手
段）５，５が配置されている。ラジアントチユー
ブ５は、Ｕ字状をなすものであつて、一端部から
燃焼ガスが供給され、これを内部で燃焼させて他
端部から排気するように構成されている。 In the figure, numeral 1 is the furnace main body. Furnace body 1
has a cylindrical shape composed of a bottom wall 2, a side wall (furnace wall) 3, and a ceiling wall 4, and inside thereof there is a wall along the side wall 3 in the depth direction (direction of arrow A in the figure).
Radiant tubes (heating means) 5, 5 are arranged which extend toward. The radiant tube 5 is U-shaped, and is configured to be supplied with combustion gas from one end, combust it internally, and exhaust from the other end.
また、底壁２の中央部には、炉本体１の奥行方
向へ向かつて延びる開口部２ａが設けられてお
り、ブラウン管は、その頭部を炉本体１の内部に
位置させ、尾部を図示しない搬送機構に支持され
て矢印Ａ方向へ向かつて搬送されるようになつて
いる。また、底壁２には、その開口部２ａに沿つ
て下部仕切板６，６が設けられている。下部仕切
板６は、開口部２の縁部から上方側壁３側へ向か
つて傾斜する傾斜板部６ａと、底壁２に対して平
行な水平板部６ｂとから構成され、表裏面に開口
する多数の孔通気孔部７…を有している。そし
て、この下部仕切板６の縁部には、遠赤外線パネ
ル８がその表面を側壁３に対して平行に位置させ
てそれぞれ固定されている。 Further, an opening 2a extending in the depth direction of the furnace body 1 is provided in the center of the bottom wall 2, and the cathode ray tube has its head located inside the furnace body 1, and its tail is not shown. It is supported by a transport mechanism and transported in the direction of arrow A. Further, lower partition plates 6, 6 are provided on the bottom wall 2 along the opening 2a. The lower partition plate 6 is composed of an inclined plate part 6a that slopes from the edge of the opening 2 toward the upper side wall 3 side, and a horizontal plate part 6b that is parallel to the bottom wall 2, and is open to the front and back surfaces. It has a large number of vent holes 7. Far-infrared panels 8 are fixed to the edges of the lower partition plate 6 with their surfaces positioned parallel to the side walls 3.
遠赤外線パネル８は、矩形板状をなすものであ
つて、加熱されることによつて炉の内部側を向く
表面から遠赤外線を照射するように構成されてい
る。また、遠赤外線パネル８の表面は波状に形成
されており、遠赤外線を炉の内部のランダムな方
向へ向かつて照射するようになつている。また、
遠赤外線パネル８の上端部には、表面を天井壁４
に対して平行に位置させた上部仕切板９がそれぞ
れ固定されている。そして炉本体４内は、上部仕
切板９，９、遠赤外線パネル８，８および下部仕
切板６，６によつて、加熱室１０，１０と炉室１
１とに区画され、ラジアントチユーブ５により加
熱された雰囲気は、遠赤外線パネル８を加熱する
とともに、天井壁４に設けられたフアン空気循環
手段１２により対流せしめられ、炉室１１内に流
入するようになつている。 The far-infrared panel 8 has a rectangular plate shape, and is configured to emit far-infrared rays from the surface facing the inside of the furnace when heated. Further, the surface of the far-infrared panel 8 is formed in a wavy shape, so that far-infrared rays are directed and irradiated in random directions inside the furnace. Also,
The upper end of the far infrared panel 8 has a ceiling wall 4
Upper partition plates 9 positioned parallel to each other are fixed respectively. The inside of the furnace body 4 is divided into heating chambers 10, 10 and the furnace chamber 1 by upper partition plates 9, 9, far-infrared panels 8, 8, and lower partition plates 6, 6.
The atmosphere heated by the radiant tube 5 heats the far-infrared panel 8 and is convected by the fan air circulation means 12 provided on the ceiling wall 4 to flow into the furnace chamber 11. It's getting old.
次に、上記の熱処理炉によつてガラス製品の熱
処理を行う場合の作用について説明する。 Next, the operation when heat-treating glass products using the above heat-treating furnace will be explained.
まず、加熱領域を構成する熱処理炉において
は、フアン１２を回転させた状態でラジアントチ
ユーブ５内で燃料ガスを燃焼させ、加熱室１０内
の雰囲気温度を高める。すると、遠赤外線パネル
８が加熱され、その炉室１側を向く表面から波長
５〜50μの遠赤外線が照射される。この遠赤外線
は、炉室１１内において搬送される製品のガラス
素材を透過し、その際に遠赤外線が有する熱エネ
ルギーをガラス素材内部に放出するから、ガラス
素材が表面側から裏面側にかけて均一に加熱され
る。そして、加熱された製品は、搬送されて順次
恒温保持領域に入る。恒温保持領域においては、
所定温度に達した製品が炉室１１内の雰囲気によ
り一定の温度に保たれる。次に、徐冷領域を構成
する熱処理炉においては、加熱室１０内の雰囲気
温度を炉室１１内を搬送される製品の温度よりも
低く設定すする。すると、遠赤外線パネル８の表
面から製品温度よりも低温の遠赤外線が照射され
る。この遠赤外線は、製品のガラス素材を透過
し、その際に製品が有する熱エネルギーを吸収す
るから、ガラス素材が表面側から裏面側にかけて
均一に冷却される。 First, in the heat treatment furnace constituting the heating region, fuel gas is burned in the radiant tube 5 while the fan 12 is rotated to raise the atmospheric temperature in the heating chamber 10 . Then, the far-infrared panel 8 is heated, and far-infrared rays having a wavelength of 5 to 50 microns are irradiated from the surface facing the furnace chamber 1 side. This far-infrared rays pass through the glass material of the product being conveyed in the furnace chamber 11, and at that time, the thermal energy of the far-infrared rays is released into the glass material, so that the glass material is uniformly distributed from the front side to the back side. heated. Then, the heated products are transported and sequentially enter the constant temperature holding area. In the constant temperature range,
The product that has reached a predetermined temperature is maintained at a constant temperature by the atmosphere within the furnace chamber 11. Next, in the heat treatment furnace constituting the slow cooling area, the ambient temperature in the heating chamber 10 is set lower than the temperature of the product transported in the furnace chamber 11. Then, far infrared rays having a temperature lower than the product temperature are irradiated from the surface of the far infrared panel 8. This far-infrared rays pass through the glass material of the product and absorb the thermal energy of the product, so that the glass material is uniformly cooled from the front side to the back side.
上記熱処理炉においては、遠赤外線パネル８か
ら照射される遠赤外線によりガラス製品を昇温さ
せ、あるいは降温させるように構成しているか
ら、製品を短時間で昇降温させてもガラス素材に
温度差が生じることがない。したがつて、製品に
割れを発生することなく短時間でこれを昇降温さ
せることができ、熱処理の作業効率を大幅に向上
させることができるのは勿論のこと、炉本体１や
炉の開口部から外部に放散される熱量を少なくす
ることができ、燃料費を節約することができる。
また、製品を恒温保持する際には、炉室１１内の
雰囲気により製品の温度が一定に保たれるから、
製品の温度管理を容易に行うことができる。 The above heat treatment furnace is configured to raise or lower the temperature of the glass product using far infrared rays irradiated from the far infrared panel 8, so even if the product is heated or cooled in a short time, there will be no difference in temperature between the glass materials. never occurs. Therefore, it is possible to raise and lower the temperature of the product in a short period of time without causing cracks in the product, which not only greatly improves the work efficiency of heat treatment, but also reduces the temperature of the furnace body 1 and the opening of the furnace. The amount of heat dissipated to the outside can be reduced, and fuel costs can be saved.
Furthermore, when keeping the product at a constant temperature, the temperature of the product is kept constant by the atmosphere inside the furnace chamber 11.
The temperature of the product can be easily controlled.
なお、上記実施例では、ラジアントチユーブ８
により加熱室１０内の雰囲気温度を高めるように
構成しているが、その他、伝熱線あるいはガスバ
ーナによつて加熱するように構成してもよく、ま
た、炉外に熱風発生装置を併設してもよい。ま
た、ブラウン管の熱処理に限らず、その他のガラ
ス製品の歪取焼鈍、コーテイング処理、焼付け、
成形加工、強化加工等の加熱に際しても上記と同
様の効果を得ることができる。 In addition, in the above embodiment, the radiant tube 8
Although the configuration is such that the atmospheric temperature within the heating chamber 10 is raised by using a heat exchanger, the heating may be performed using a heat transfer wire or a gas burner, or a hot air generator may be installed outside the furnace. good. In addition to heat treatment for cathode ray tubes, we also provide strain relief annealing, coating treatment, baking, and other glass products for other glass products.
Effects similar to those described above can also be obtained during heating during molding, reinforcing, and the like.
［発明の効果］
以上説明したようにこの発明の熱処理炉では、
炉本体の内部に、炉壁から離間して配置され、か
つ加熱されて内部を向く表面から遠赤外線を照射
する遠赤外線パネルと、この遠赤外線パネルの縁
部と上記炉壁との〓間を遮蔽する仕切板と、上記
遠赤外線パネルと上記炉壁との間の雰囲気を加熱
する加熱手段と、この加熱手段によつて加熱され
た雰囲気を上記仕切板に設けた通気部を通して上
記遠赤外線パネルの内側と外側との間で循環させ
る空気循環機構とを備えて構成しているので、ガ
ラス製品に割れを発生させることなく短時間で昇
降温させることができ、熱処理の作業効率を向上
させせることができる。また、短時間で昇降温さ
せることができるから炉から放散される熱量を少
なくすることができ、燃料費を大幅に低減するこ
とができる等の効果が得られる。[Effects of the Invention] As explained above, in the heat treatment furnace of the present invention,
A far-infrared panel that is placed inside the furnace body at a distance from the furnace wall and emits far-infrared rays from a heated surface facing the inside, and a space between the edge of this far-infrared panel and the furnace wall. a partition plate for shielding, a heating means for heating the atmosphere between the far-infrared panel and the furnace wall, and an atmosphere heated by the heating means passing through a vent provided in the partition plate to the far-infrared panel. It is equipped with an air circulation mechanism that circulates air between the inside and outside of the glass, so it is possible to raise and lower the temperature in a short time without causing cracks in the glass product, improving the work efficiency of heat treatment. be able to. Furthermore, since the temperature can be raised and lowered in a short time, the amount of heat dissipated from the furnace can be reduced, resulting in effects such as a significant reduction in fuel costs.
第１図は本発明の一実施例を示す図であつて、
熱処理炉を示す断面図である。
１……炉本体、３……側壁（炉壁）、ラジアン
トチユーブ、６，９……仕切板、７……孔（通気
部）、８……ラジアントチユーブ（加熱手段）、１
２……フアン（空気循環手段）。
FIG. 1 is a diagram showing an embodiment of the present invention,
It is a sectional view showing a heat treatment furnace. 1... Furnace body, 3... Side wall (furnace wall), radiant tube, 6, 9... Partition plate, 7... Hole (ventilation part), 8... Radiant tube (heating means), 1
2...Fan (air circulation means).
Claims (1)
れ、かつ加熱されて内部を向く表面から遠赤外線
を照射する遠赤外線パネルと、この遠赤外線パネ
ルの縁部と上記炉壁との〓間を遮蔽する仕切板
と、上記遠赤外線パネルと上記炉壁との間の雰囲
気を加熱する加熱手段と、この加熱手段によつて
加熱された雰囲気を上記仕切板に設けた通気部を
通して上記遠赤外線パネルの内側と外側との間で
循環させる空気循環機構とを備えてなることを特
徴とする熱処理炉。1. A far-infrared panel that is placed inside the furnace body at a distance from the furnace wall and that emits far-infrared rays from a heated surface facing the inside, and a space between the edge of this far-infrared panel and the furnace wall. a heating means for heating the atmosphere between the far-infrared panel and the furnace wall; and a heating means for heating the atmosphere between the far-infrared panel and the furnace wall; and a heating means for heating the atmosphere between the far-infrared panel and the furnace wall; A heat treatment furnace characterized by being equipped with an air circulation mechanism that circulates air between the inside and outside of a panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16714186A JPS6325483A (en) | 1986-07-16 | 1986-07-16 | Heat treating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16714186A JPS6325483A (en) | 1986-07-16 | 1986-07-16 | Heat treating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6325483A JPS6325483A (en) | 1988-02-02 |
| JPH0222317B2 true JPH0222317B2 (en) | 1990-05-18 |
Family
ID=15844187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16714186A Granted JPS6325483A (en) | 1986-07-16 | 1986-07-16 | Heat treating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6325483A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424202A (en) * | 1990-05-14 | 1992-01-28 | Sanemu Package Kk | Garment |
| JPH0450304A (en) * | 1990-06-11 | 1992-02-19 | Sanemu Package Kk | Bonding between clothing and material |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03147231A (en) * | 1989-11-01 | 1991-06-24 | Shoei Seisakusho:Kk | Heating furnace used in manufacturing cathode-ray tube or the like |
| JPH0742078Y2 (en) * | 1989-11-17 | 1995-09-27 | 株式会社成田製作所 | Annealing furnace for ceramic industry |
-
1986
- 1986-07-16 JP JP16714186A patent/JPS6325483A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424202A (en) * | 1990-05-14 | 1992-01-28 | Sanemu Package Kk | Garment |
| JPH0450304A (en) * | 1990-06-11 | 1992-02-19 | Sanemu Package Kk | Bonding between clothing and material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6325483A (en) | 1988-02-02 |
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